When measuring the coupling constant between he and hf, it can help determine the stereochemistry of the double bond. The coupling constant is the distance between the two peaks in the NMR spectrum. The value of the coupling constant depends on the distance between the two nuclei and the angle between the two bonds connecting the nuclei.
In a cis double bond, the hydrogens (H) are on the same side of the molecule, while in a trans double bond, the hydrogens (H) are on opposite sides of the molecule. When he and hf are in cis double bond, their coupling constant will be larger because the angle between the two bonds connecting the nuclei will be small.In contrast, when he and hf are in a trans double bond, their coupling constant will be smaller because the angle between the two bonds connecting the nuclei will be larger.
The stereochemistry of the double bond can, therefore, be determined based on the value of the coupling constant. In general, if the coupling constant is greater than 10 Hz, it indicates a cis double bond, while if the coupling constant is less than 10 Hz, it indicates a trans double bond.
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who is better drake or juice world
Answer:
neither
Explanation:
they both suck :)
Have a great day
Answer:
Both of them
Explanation:
They are both better you can't choose because its like parents choosing who is their favorite child.
PLEASE ANSWER CLEARLY :)
A composite material is to be made from type E-glass fibers
embedded in a matrix of ABS plastic, with all fibers to be aligned
in the same direction. For the composite, the el
A composite material is to be made from type E-glass fibers embedded in a matrix of ABS plastic, with all fibers to be aligned in the same direction. For the composite, the elastic modulus parallel to
The elastic modulus parallel to the fibers of a composite material made of type E-glass fibers embedded in a matrix of ABS plastic, with all fibers to be aligned in the same direction can be calculated as follows:First, we need to calculate the elastic modulus of each component of the composite material.
The elastic modulus of type E-glass fibers is 72 GPa, and the elastic modulus of ABS plastic is 2.5 GPa.Next, we need to calculate the volume fraction of each component. If we assume that the composite material is made up of 60% type E-glass fibers and 40% ABS plastic, then the volume fraction of type E-glass fibers is 0.6, and the volume fraction of ABS plastic is 0.4.
Finally, we can use the rule of mixtures to calculate the elastic modulus parallel to the fibers. The rule of mixtures states that the elastic modulus of a composite material is equal to the weighted average of the elastic moduli of the individual components, where the weights are the volume fractions.
Therefore, the elastic modulus parallel to the fibers is given by:
Elastic modulus parallel to fibers = (Volume fraction of type E-glass fibers x Elastic modulus of type E-glass fibers) + (Volume fraction of ABS plastic x Elastic modulus of ABS plastic)
Elastic modulus parallel to fibers = (0.6 x 72 GPa) + (0.4 x 2.5 GPa)
Elastic modulus parallel to fibers = 43.5 GPaSo, the elastic modulus parallel to the fibers of the composite material is 43.5 GPa.
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g an electron is .15 meters from a charge of 6 x 10^-6 c. calcuate: a.) the electric field strength the electron experiences. b.) the acceleration of the electron.
To solve this problem, we can use Coulomb's law, which states that the electric force between two charged particles is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
a) The electric field strength E at a distance r from a point charge q is given by:
E = k * q / r^2
where k is Coulomb's Law constant, which has a value of 9 x 10^9 N·m^2/C^2.
In this problem, the charge q is 6 x 10^-6 C and the distance r is 0.15 m. Plugging these values into the equation, we get:
E = (9 x 10^9 N·m^2/C^2) * (6 x 10^-6 C) / (0.15 m)^2
E = 2.4 x 10^4 N/C
Therefore, the electric field strength experienced by the electron is 2.4 x 10^4 N/C.
b) To calculate the acceleration of the electron, we can use the equation:
F = m * a
where F is the force acting on the electron, m is its mass, and a is its acceleration.
Coulomb's law gives the electric force F on the electron:
F = k * q1 * q2 / r^2
where q1 is the charge of the electron, which is -1.6 x 10^-19 C, and q2 is the charge of the point charge, which is 6 x 10^-6 C.
Substituting the values and simplifying, we get:
F = (9 x 10^9 N·m^2/C^2) * (6 x 10^-6 C) * (-1.6 x 10^-19 C) / (0.15 m)^2
F = -1.44 x 10^-25 N
The mass of an electron is 9.11 x 10^-31 kg. Substituting this value and the force F into the equation F = m * a, we get:
a = F / m
a = (-1.44 x 10^-25 N) / (9.11 x 10^-31 kg)
a = -1.58 x 10^6 m/s^2
Therefore, the acceleration of the electron is -1.58 x 10^6 m/s^2.
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How is the way that allows us to listen to an AM/FM Radio in our car is different from the wave that allows us to listen to music at a concert? explain by describing what types of waves are and how they differ
Answer:
Well AM/Fm is digitally using soundwaves for cars through signal, which we cant hear without one (radio). Concerts are in real life and use wavelegnths that we hear because it bounces off overytihing.
Explanation:
A 10:1 scale model was constructed to study the flow of a reservoir. The maximum discharge of the reservoir is
200m3/s, and the maximum discharge of the model is 0.1m3/s. If the time measured by the model is 1 hour, this
is equal to how many hours in a circle?
The required number of circles is 83.33.
Scale ratio, S = 10:1
Maximum discharge of reservoir, Q = 200 m³/s
Maximum discharge of model, q = 0.1 m³/s
Time measured by model, t = 1 hour
Time measured in a circle, T = ?
We can use the following equation to relate the discharges, lengths, areas, and times of the reservoir and the model:
Q₁/Q₂ = (L₁/L₂)² × (A₁/A₂) × (t₁/t₂)
where Q₁ and Q₂ are the discharges, L₁ and L₂ are the lengths, A₁ and A₂ are the areas, and t₁ and t₂ are the times.
In the given problem:
L₁/L₂ = 10/1 (scale ratio)
A₁/A₂ = 1 (as the shapes are similar)
Q₁ = 200 m³/s
Q₂ = 0.1 m³/s
t₁ = 1 hour
Therefore,
200/0.1 = (10/1)² × 1 × (1/t₂)
Simplifying the equation, we get:
2000 = 100 × (1/t₂)
Solving for t₂, we find:
t₂ = 1/2000 hour
Now, we need to find out how many hours are in a circle. In a circle, the time period is 24 hours, i.e., T = 24 hours.
So, the number of circles in 1 hour is 1/24. Therefore, the number of circles in 1/2000 hour is:
(1/24) × (1/(1/2000)) = (1/24) × (2000) = 83.33
Thus, 1 hour is approximately equal to 83.33 circles.
Hence, the required number of circles is approximately 83.33.
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how much force must be exerted to accelerate a 240 n weight to 5.7 m/s2
To accelerate a 240 N weight to 5.7 m/s^2, a force of 1,368 N must be exerted.
The force required to accelerate an object can be calculated using Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a). In this case, the weight of the object can be considered as its mass, since weight is the force exerted by gravity on an object. Therefore, the mass (m) is 240 N (weight) divided by the acceleration due to gravity (9.8 m/s^2), which equals approximately 24.49 kg. To find the force (F) required to accelerate the object to 5.7 m/s^2, multiply the mass by the acceleration: 24.49 kg x 5.7 m/s^2 = 139.413 N, or approximately 1,368 N. Thus, a force of 1,368 N must be exerted to achieve the desired acceleration.
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A tennis ball of mass m hits the wall along a horizontal direction with velocity and it bounces back along the same direction and with the same initial speed. Determine the magnitude of change in momentum of the tennis ball.
The magnitude of the change in momentum of the tennis ball when it hits the wall and bounces back along the same horizontal direction with the same initial speed is 2 times the momentum of the ball before the collision.
The momentum of an object is defined as the product of its mass (m) and velocity (v). Before the collision, the tennis ball has a momentum of p₁ = m × v. When the ball hits the wall, it experiences a change in momentum due to the collision. After the collision, when the ball bounces back with the same initial speed, its momentum is in the opposite direction and its magnitude remains the same.
Since momentum is a vector quantity, the change in momentum (Δp) is given by the final momentum (p₂) minus the initial momentum (p₁). Therefore, Δp = p₂ - p₁.
Considering that the final momentum is in the opposite direction, we have p₂ = -p₁. Substituting this into the equation, we get Δp = -p₁ - p₁ = -2p₁.
The magnitude of the change in momentum is given by the absolute value of Δp, so |Δp| = |-2p₁| = 2|p₁|.
Therefore, the magnitude of the change in momentum of the tennis ball is 2 times the magnitude of its initial momentum, or 2|p₁|.
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Describe seven physical properties that help distin-
guish one mineral from another.
Answer:
Color, Streak, luster, cleavage and fracture, hardness, crystal shape, and density.
Explanation:
the number of nodes, including the end points, in a standing wave that is two wavelengths long is 3. 4. 1. 2. none of the above
The standing wave that is two wavelengths long has 3 nodes, including the endpoints.
In a standing wave, nodes are points that do not undergo any displacement. The distance between two consecutive nodes is equal to half a wavelength. The number of nodes in a standing wave can be calculated using the formula: Number of Nodes = Number of Wavelengths + 1.
In this case, the standing wave is two wavelengths long. So, we'll calculate the number of nodes using the given formula.
Number of Wavelengths = 2
Number of Nodes = Number of Wavelengths + 1
Substituting the value of the Number of Wavelengths into the formula:
Number of Nodes = 2 + 1
Number of Nodes = 3
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The question is -
The number of nodes, including the endpoints, in a standing wave that is two wavelengths long is?
a) None of the Above
b) 1
c) 2
d) 3
e) 4
what does it mean that a material transmits waves?(1 point) responses waves will pass through the material. waves will pass through the material. waves will bounce off the surface of the material. waves will bounce off the surface of the material. waves will bend and change their direction slightly when they hit the material. waves will bend and change their direction slightly when they hit the material. waves will stop and transfer energy when they hit the material.
It means that waves will pass through the material. When a material transmits waves, it allows the waves to travel through it without significantly altering their properties.
This is different from materials that reflect waves, which cause the waves to bounce off the surface, or materials that absorb waves, which cause the waves to stop and transfer their energy to the material.
Materials that transmit waves are often transparent or translucent, allowing light waves to pass through them and be seen on the other side. Examples of materials that transmit waves include glass, air, and water.
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The name of the festival or custom
Answer: harvest moon
During the harvest season, they would worship the full moon, giving thanks for a plentiful harvest. The women in each family would prepare a table full of newly harvested rice and fruit, in an ancient tradition called 'charye. ' The origins of Chuseok can be traced back to this custom.
ceremonies
hope this helps
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i need to write an abstract for a science project, 250 words minimum. the project is regarding the frequency of guitar strings. here is other information if needed:
There are many components that make up a guitar. At the top, is the head and the peghead. Below that is the nut which leads into the neck and the fretboard of the instrument. The frequency of a guitar string depends on the length, the tension, and the mass of the string.The longer, looser, or heavier the string, the lower the lower the frequency. Ultimately, the slower the string vibrates and the longer it takes the sound to carry through the string, the lower the pitch will be and vice versa. You can increase the frequency of a string on guitar by shortening, tightening or reducing the weight of it. The strings of a guitar are supported at two points when they are not being played. The nut, at the top, and the saddle, which rests on the bridge. When you fret on a guitar, that fret starts to act as the nut, becoming the starting point of the string and therefore raising the frequency. You can raise the pitch an octave by fretting between the 11th and 12th frets.
Question: What is the relationship between the length of a string and the wavelength of the fundamental tone it produces when plucked?
Hypothesis: If the string is shorter, then it will produce a fundamentally higher tone.
Materials:
guitar (acoustic or electric)
guitar pick
electronic tuner to tell you what note you’ve played
sewing tape measure
lab notebook
pen or pencil
Procedure:
Measure the length of the string and the distance between the saddle and each fret using a sewing tape measure.
Tune your guitar and set up a tuner software or chromatic tuner to record the notes.
Play the open high E string and write down the frequency.
Fret the string just behind the first fret and play it again. Write down the frequency.
Repeat step 4 for frets 2-5 and all the other strings.
Organize your data in a table.
conclusion:
The fundamental tone produced by each string was higher when the string became shorter and thinner.
The abstract for a science project regarding the frequency of guitar strings is given below
What is the abstract?This science project is one that seeks to explores the relationship between the length of a guitar string and the wavelength of the elemental tone it produces when culled.
The recurrence of a guitar string is seen as part on its length, pressure, and mass. This extend tells that shorter strings will create a on a very basic level higher tone.
Hence An electronic tuner was said to be utilized to record the recurrence of each note played. The comes about appeared that the elemental tone delivered by each string was higher when the string got to be shorter and more slender.
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If a radioactive material has a 10 year half-life, how much of a 100 g sample will be left after 30 years?
Answer:
12.6 g
Explanation:
Since it has a half life of 10 years and the question asks for 30 years all you need to do is divide 100 in half 3 times
the output resistance of a bipolar transistor is ro = 225 kω at ic = 0.8 ma. (a) determine the early voltage. (b) using the results of part (a), find ro at (i) ic = 0.08 ma and (ii) ic = 8 ma.
The output resistance ro at (i) IC = 0.08mA is 225 kΩ, and (ii) IC = 8mA is 225 Ω. The Early voltage is the slope of the graph between the collector current and the collector-emitter voltage.
The Early voltage, VA, is the voltage at which the collector current equals the reverse saturation current.
It is denoted by a and is given by Va = ∆VCE / ∆IC, where ∆VCE = VCEn - VCE0, and ∆IC = ICn - IC0. where VCE0 and IC0 are the initial operating points in a common-emitter amplifier circuit. With these values, we can easily solve the problem.
(a)To find the Early voltage, we will use the formula:ro = VA / IC, where ro = 225kΩ and IC = 0.8mA are given.
VA = ro × IC = 225kΩ × 0.8mA = 180V
Therefore, the Early voltage is 180V.
(b) We have to find ro for two conditions: (i) For IC = 0.08mA. Using the formula: ro = VA / IC
we have, VA = IC × ro = 0.08mA × 225kΩ = 18Vro = VA / IC = 18V / 0.08mA = 225kΩ
(ii) For IC = 8mA
Similarly, VA = IC × ro = 8mA × 225kΩ = 1.8kVro = VA / IC = 1.8kV / 8mA = 225Ω.
Therefore, the output resistance ro at (i) IC = 0.08mA is 225 kΩ, and (ii) IC = 8mA is 225 Ω.
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The light is in one direction after passing through a polarizer
True or false
Answer:
Light propagating in a plane that makes a 0 degree angle with the polarizer will pass through and all other planes will only pass the component of the vector that is in line with the polarizer. What the image suggests, and other images like the second one, is that the light is now all propagating parallel to a single plane
Explanation:
hope this helps
Answer:
true
Explanation:
a polarizer allows only light of a specific wavelength to pass through
What effect do shiny metals have on radiant energy?
Answer:
Metals conduct heat and reduce the kinetic energy within the components that need to remain cool
a high energy pulsed laser emits a 2.9 ns long pulse with average power of 2.38 tw.. the beam is 0.41 cm in radius. what is the energy delivered in each pulse. what is the average value of the magnitude of the electric field
The energy delivered in each pulse is 690 Joules. The average value of the magnitude of the electric field is 1.303 × 10¹¹ V/m.
What is an electric field?A region of space surrounding an electrically charged particle or object known as an electric field is one in which an electric charge would experience force. A vector quantity called an electric field can be represented by arrows pointing in the direction of or away from charges.
Pulse emitted = 2.9 × 10(-9) s
Radius = 4.1 × 10⁻³ m
Power= 2.38 × 10¹¹ W
Energy = U=P × t
=2.9 × 10⁻⁹ ×2.38 × 10''
= 690 Joule
The electric field RMS value is given by
S= P/A = cε₀ E²(rms)
\(E_{rms}= \sqrt{\frac{P}{Ac\epsilon_{0}} } \\=\sqrt{\frac{2.38\times 10^{11}}{\pi((4.1\times10^{-3})^{2})(3\times10^{8})(8.85\times10^{-12})}\)
= 1.303 × 10¹¹ V/m
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What are other ways you could try to build an arch?
10 POINTS HELP ME
Answer:
Apply glue to one side of a layer of arch (segments) and place the next player on top. Screw them together while the glue dries. Add glue the top of these two laminated arch layers and then add one more layer, screwing it afterwards. Repeat this to make as many arches as you need (or have wood for).
Explanation:
True or False: The northern & southern lights are caused by solar wind particles interacting with gases in our atmosphere.
Answer:
False.
Explanation:
An aurora is a natural electric phenomenon that creates bright and colorful light displays in the sky. These dramatic and colorful lights are created when electrically charged particles from solar winds enter the Earth's atmosphere and interact with gases in the atmosphere.
Which force does not operate at a distance of 1 m?
A. Weak nuclear
O B. Electric
C. Gravitational
D. Magnetic
Answer:
A
Explanation:
Larry’s Local Grocery is located in a small town with a high number of families living in poverty. The next grocery store is 30 minutes away and many families do not own a car. Larry has a small number of loyal customers but not enough to pay for the cost of selling fresh fruits and vegetables. If Larry stops selling fruits and vegetables a(n)
will be created and the people in town are more likely to experience
.
If Larry stops selling fruits and vegetables, a food desert will be created in the town.
A food desert is an area, typically in low-income communities, where there is limited access to affordable and nutritious food. In this case, without Larry's store providing fresh fruits and vegetables, the residents will face challenges in obtaining these essential food items.
The people in town are more likely to experience the following consequences:
Nutritional deficiencies: Fresh fruits and vegetables are important sources of essential vitamins, minerals, and dietary fiber. Without access to these nutritious options, the residents may suffer from a lack of important nutrients, leading to potential health problems such as vitamin deficiencies and weakened immune systems.know more about Nutritional deficiencies here:
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A current of 0.2A flows through a component with a resistance of 40 ohms. Calculate the potential difference.
The potential difference of a current of 0.2A that flows through a component with a resistance of 40 ohms is 8V.
How to calculate potential difference?Potential difference is difference in potential energy between two points in an electric field i.e. the difference in charge between two points in an electrical circuit.
The potential difference of an electrical current can be calculated by multiplying the current by the resistance as follows:
Voltage = current (I) × resistance (R)
According to this question, a current of 0.2A flows through a component with a resistance of 40 ohms. The potential difference is as follows:
V = 0.2A × 40ohms
V = 8V
Therefore, the potential difference of a current of 0.2A that flows through a component with a resistance of 40 ohms is 8V.
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a tanker truck transports gasoline in a horizontal cylindrical tank with diameter ft and length ft. if the tank is full of gasoline with density , compute the force exerted on one end of the tank.
A tanker truck transports gasoline in a horizontal cylindrical tank with diameter 4 m and length 3 m. If the tank is full of gasoline with density 800 kg/m^3 , the force exerted on one end of the tank is 14,450 N.
The force exerted on one end of a horizontal cylindrical tank filled with gasoline of density ρ is given by the equation:
F = 2πρg(L/2)(D/2)2
Where F is the force, ρ is the density of the gasoline, g is the acceleration due to gravity, L is the length of the tank and D is the diameter of the tank.
To calculate the force, we first need to know the values of the density, length, and diameter of the tank.
Assuming that the tanker truck transports gasoline with density 800 kg/m3, length 30 m and diameter 4 m, the force exerted on one end of the tank is calculated as follows:
F = 2π(800 kg/m3)(9.81 m/s2)(15 m/2)(4 m/2)2
F = 14,450 N
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The probable question may be:
a tanker truck transports gasoline in a horizontal cylindrical tank with diameter 4 m and length 3 m . if the tank is full of gasoline with density 800 kg/m^3. compute the force exerted on one end of the tank.
which color of the visible spectrum has the shortest wavelength (400 nm)?
The color of the visible spectrum with the shortest wavelength is violet. Violet light has a wavelength of approximately 400 nanometers (nm).
The visible spectrum is the portion of the electromagnetic spectrum that human eyes can detect, ranging from red, with the longest wavelength, to violet, with the shortest wavelength. As the wavelength decreases, the energy of the light increases. Violet light has a shorter wavelength than blue, green, yellow, orange, and red light, making it the color with the highest energy in the visible spectrum. Wavelength is inversely related to frequency, meaning that shorter wavelengths correspond to higher frequencies. Violet light has a higher frequency than any other color in the visible spectrum. This high frequency is associated with its short wavelength.
When white light, such as sunlight, passes through a prism or diffracts, it can be separated into its component colors, revealing the entire visible spectrum. The shortest wavelength observed in this spectrum is violet light, representing the highest energy and shortest visible light waves.
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How do you calculate resistors in series?
The equivalent resistance when the resistors are connected in series is given by the expression, R eq = R₁ + R₂ + R₃ + ... + Rₙ.
When the same quantity of current flows through each resistor at the same time, two or more resistors are said to be connected in series. The voltage across each resistor in such circuitry varies. If any resistor in a series link breaks or has a fault, the circuit as a whole is shut off. A series circuit can be built more easily than a parallel circuit.
The sum of all individual resistances makes up the system's overall resistance.
R eq = R₁ + R₂ + R₃ + ... + Rₙ
Thus, the required expression of equivalent resistance for resistors connected in series is found out.
The question is inappropriate. It is solved generally according to my knowledge.
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For the following six questions, match the descriptions to the below people (A-J)
A) Eratosthenes B) Aristarchus C) Isaac Newton D) Aristotle E) Ptolemy F) Galileo G) Hipparchus H) Kepler I) Nicolaus Copernicus J) Tycho Brahe
23. Discovered the phases of Venus using a telescope.
24. First to consider ellipses as orbits.
25. Foremost ancient Greek philosopher.
26. Ancient Greek who believed in a sun-centered universe.
27. First to measure the size of the Earth to good accuracy.
28. Developed the first predictive model of the solar system.
The correct match of the descriptions to the below people are 23 - F, 24 - H, 25 - D, 26 - I, 27 - A, 28 - B.
23 - F Galileo: Galileo Galilei is credited with discovering the phases of Venus using a telescope. Through his observations, he observed that Venus went through a series of phases similar to those of the Moon, which supported the heliocentric model of the solar system.
24 - H Kepler: Johannes Kepler was the first to consider ellipses as orbits. He formulated the laws of planetary motion, known as Kepler's laws, which stated that planets move in elliptical paths with the Sun at one of the foci. Kepler's work revolutionized our understanding of celestial mechanics.
25 - D Aristotle: Aristotle, the ancient Greek philosopher, is considered one of the foremost thinkers in history. While his contributions span various fields, including philosophy and natural sciences, his views on astronomy were geocentric. He believed that the Earth was the center of the universe and that celestial bodies moved in perfect circles around it.
26 - I Nicolaus Copernicus: Nicolaus Copernicus was an astronomer who proposed the heliocentric model of the solar system, in which the Sun, rather than the Earth, was at the center. Copernicus's revolutionary idea challenged the prevailing geocentric view and laid the foundation for modern astronomy.
27 - A Eratosthenes: Eratosthenes was an ancient Greek mathematician and astronomer who made significant contributions to geography and astronomy. He is known for his accurate measurement of the Earth's circumference. By measuring the angle of the Sun's rays at two different locations, he estimated the Earth's circumference with remarkable accuracy.
28 - B Aristarchus: Aristarchus of Samos is credited with developing the first predictive model of the solar system. He proposed a heliocentric model centuries before Copernicus, suggesting that the Sun was at the center of the universe, with the Earth and other planets orbiting it. Aristarchus's model was a significant departure from the prevalent geocentric view of the time.
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If air resistance is negligible, a falling object can be considered
Answer:
Explanation:
freely falling object
if an object moves with constant acceleration, its velocity must
Answer:20 m/s. ... 10 m/s. If an object moves with constant acceleration, its velocity must. change by the same amount each second.
Explanation:
If a 1 kg book has 46 Joules of gravitational potential energy how high is the shelf it is on?
g = 9.8 m/s^2 KE = ½ mv^2 PE = mgh
Answer:
4.7m
Explanation:
Given parameters:
Mass of the book = 1kg
Gravitational potential energy = 46J
Unknown:
Height of the shelf = ?
Solution:
The potential energy is due to the position of a body above the ground.
Gravitational potential energy = mgh
m is the mass,
g is the acceleration due gravity = 9.8m/s²
h is the height which is unknown
46 = 1 x 9.8 x h
h = 4.7m
1)Describe the difference between an
energy transfer and energy store.
2)Give 3 examples of an energy transfer.
3)Give 3 examples of an energy store.
Answer:
1) Energy transfer is the movement of energy from one location to another. ... Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy.
2)A swinging pirate ship ride at a theme park. Kinetic energy is transferred into gravitational potential energy.
A boat being accelerated by the force of the engine. ...
Bringing water to the boil in an electric kettle.
3)Common examples of energy storage are the rechargeable battery, which stores chemical energy readily convertible to electricity to operate a mobile phone, the hydroelectric dam, which stores energy in a reservoir as gravitational potential energy, and ice storage tanks, which store ice frozen by cheaper energy at night
Explanation:
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