How much is the weight of a 1 kg mass at the pole and the equator of the earth

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When the gymnast is at 2.98 meters above the trampoline, she has potential gravitational energy in relation to the trampoline:

When she lands on the trampoline, all this energy will be converted into potential elastic energy:

Now, to find the stretch in the trampoline when the gymnast is at rest, let's use the gymnast weight force in the formula for the force in a string:

Therefore the trampoline stretches 8.22 cm.

The electrical power dissipated by the circuit is 575 W.

The amount of heat energy released in half hour is 0.2875 kWh.

The electrical power dissipated by the circuit is calculated as follows;

P = IV

where;

P = I²R

where;

P = 5² x 23

P = 575 W

The amount of heat energy released in half hour is calculated as follows;

E = Pt

where;

E = 575 W x 0.5 hr

E = 287.5 kW

E = 0.2875 kWh

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Answer:

It is the core.

The statement "Something established by authority as a rule for measurement is called a standard unit" is True.

Something established by authority as a rule for measurement is called a standard unit. Standard units provide a consistent and universally accepted basis for measuring quantities in various fields such as science, engineering, and commerce.

Standard units are essential because they ensure consistency and accuracy in measurements across different contexts and locations. They serve as a reference point for comparing and quantifying physical quantities. By establishing standardized units, authorities promote uniformity and facilitate effective communication and collaboration in scientific research, technological advancements, and global trade.

In the International System of Units (SI), which is the most widely used system of measurement, there are seven base units: meter (length), kilogram (mass), second (time), ampere (electric current), kelvin (temperature), mole (amount of substance), and candela (luminous intensity). These base units are defined based on fundamental physical constants or natural phenomena, providing a reliable and reproducible foundation for measurement.

Standard units are typically defined and maintained by internationally recognized organizations like the International Bureau of Weights and Measures (BIPM) to ensure global consistency. These organizations establish precise definitions, measurement protocols, and calibration procedures for standard units, often using advanced scientific techniques and technologies.

The use of standard units simplifies scientific research, enables accurate engineering designs, ensures fair trade practices, and facilitates international cooperation. It allows for the seamless exchange of information and data, promotes quality assurance, and supports the development of common standards and regulations in various industries.

In summary, a standard unit is a measurement rule established by authority to provide a consistent and universally accepted reference for quantifying physical quantities. It is a fundamental aspect of scientific progress, technological advancements, and global collaboration.

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Answer:

34.5 m

Explanation:

Given data : An elephant produces 10 Hz sound wave. Assuming the speed of sound in air is 345 m/s. To find : What is the wavelength of sound ? Answer : The wavelength of the sound is 34.5 m.

It has the greatest Potential energy when the ball reaches its highest point.The correct option is D

Potential energy is the energy that an object possesses due to its position or state, which can be converted into work or kinetic energy when acted upon by a force.

There are three types of Potential Energy such as :

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Answer:

1) PE=mgh

2)when the ball reaches its highest point

3)21,599,200 J

4) The object’s mass, gravity, and height determine its potential energy.

5)Members of a team work together to create a plan, and then members choose different tasks to carry out the plan.

Answer:

control

Explanation:

you always need a control in experiment

Answer:

B

Explanation:

B

Answer:

A. The rays can change molecules and atoms in the body into ions.

Answer:

Nitrogen and oxygen

Explanation:

Nitrogen and oxygen account for 99 percent of the gases in dry air, with argon, carbon dioxide, helium, neon, and other gases making up minute portions.

Answer:

Yeah

Explanation:

Thermoproteota is a prokaryote.

Prokaryotes are unicellular

Given:

the voltage of the battery is

six resistance are connected in the circuit.

Explanation:

resistor a and b are in series connection. so they can be added in the following way

now resistor Rab ohm and Re ohms are in parallel combination.

they can be added in the following way

now all the resistor are in series combination. they can be added as

above is the equivalent resistance of the circuit.

now calculate the current in the circuit.

apply ohm's law

Plugging all the values in the above relation, we get

above is the total current flowing in the circuit.

now calculate the voltage and current across each resistor.

voltage across the resistor d is

now voltage across resistor f is

this amount of voltage will be same across the resistor ab and resistor e.

voltage across the resistor e is

voltage across the resistor c is

now calculate the current across Rab and Re.

the current in across Rab is

now the current across Re is

The induced emf of the coil is 0, 0.0132V, 0, respectively.

(A) Generally, the equation for the flux is  mathematically given as

ε = BA = B(30×40×1/10⁴)

So, the magnetic flux through the coil is constant.

From Faraday's law, ε = - d/dt B ---(1) for the induced emf.

Since magnetic flux is constant, LHS. of (1) =0

Induced emf=0

(B) Let x be the length of the coil's magnetic field area.

induced emf=B(40×x×1/10⁴)

=0.0132V

(C) In conclusion, Therefore, there is no variation in the magnetic flux across the coil when magnetic flux=0.

induced emf=0

What is magnetic flux?

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Answer:

4.926 L Y 7.389 L

Explanation:

first you calculate the tank volume

V = π\((14 cm)^{2}\)(10 cm = \(12315 cm^{3}\)

then you convert to liters

\(12315 cm^{3}\) = 12.315 l

then you calculate the liters of water

2/5(12.35 l) = 4.926 l

finally we calculate the amount without water

12.315 l - 4.926 l = 7.389 l

HERE IS MORE INFORMATION ON THE SUBJECT. THEY REMOVED THE

ENGLISH SITE BUT YOU CAN USE TRANSLATOR

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Answer: Scarcity affects society in every way. First and foremost, scarcity affects the way that individuals make choices. Time and money are two examples of scarce resources that we make choices with every day.

Answer:

The  pressure is  \(P = 1652 \ Pa\)

Explanation:

From the question we are told that

    The  volume of the container is  \(V = 1.83 \ L = 1.83 *10^{-3 } \ m^3\)

     The mass of  \(N_2\) is  \(m_n = 0.246 \ g = 0.246 *10^{-3} \ kg\)

     The root-mean-square velocity is  \(v = 192 \ m/s\)

The  root -mean square velocity is mathematically represented as

      \(v = \sqrt{ \frac{3 RT}{M_n } }\)

Now the ideal gas law is mathematically represented as

      \(PV = nRT\)

=>   \(RT = \frac{PV}{n }\)

Where n is the number of moles which is mathematically represented as

         \(n = \frac{ m_n }{M }\)

Where  M  is the molar mass of  \(N_2\)

So  

        \(RT = \frac{PVM_n }{m _n }\)

=>    \(v = \sqrt{ \frac{3 \frac{P* V * M_n }{m_n } }{M_n } }\)

=>    \(v = \sqrt{ \frac{ 3 * P* V }{m_n } } }\)

=>   \(P = \frac{v^2 * m_n}{3 * V }\)

substituting values

    =>    \(P = \frac{( 192)^2 * 0.246 *10^{-3}}{3 * 1.83 *10^{-3} }\)

=>         \(P = 1652 \ Pa\)

An example of energy transformation of chemical to thermal to light to sound is Crackling fireplace.

Energy transformation, which we also know as energy conversion, is described as the process of changing energy from one form to another. Energy is a quantity that provides the capacity to perform work or moving, or provides heat.

A Crackling fireplace starts the process of energy transformation from being a chemical to thermal \via heat and then makes a sound.

When an explosive goes off, chemical energy that was stored in it is changed and transferred into sound energy, kinetic energy, and thermal energy.

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Example of energy transformation of chemical to thermal to light to sound is a Crackling fireplace.

Energy transformation which is also know as energy conversion is described as the changing of energy from one form to another. Energy is a quantity that provides the capacity to perform work or moving, or provides heat.

A Crackling fireplace starts the process of energy transformation from being a chemical to thermal through heat and then makes the crackling sound.

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The refrigerator's coefficient of performance is 3.81.

The refrigerator's power input is 504 W.

The refrigerators coefficient of performance is calculated as follows;

\(COP = \frac{T_{cold}}{T_{hot} - T_{cold}}\)

\(COP = \frac{202}{255 - 202} \\\\COP = 3.81\)

\(W = P \Delta V = P (V_2 - V_1)\\\\W = 150 \times 10^3 (100 \times 10^{-6} \ - \ 40 \times 10^{-6})\\\\W = 9 \ J\)

\(P = \frac{E}{t} \\\\P = 9 \ J \ \ \times \ \ 56 \ \frac{cycle}{s} \\\\P = 504 \ J/s \ = \ 504 \ W\)

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The resistance of the wire is is 36.55 ohms.

The induced emf in the loop is calculated by Faraday's law as follows;

emf = A(B₂- B₁)/t

emf = 0.606 (7.97 - 2.91)/0.856

emf = 3.58 V

The resistance of the wire is calculated by using Ohms law as follows;

emf = IR

R = emf/I

R = 3.58/0.098

R = 36.55 ohms

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Answer:

Fr = 102[N]

Explanation:

We must perform a free body diagram to understand the forces acting on Vin Diesel. In the attached image we see the forces related to his weight and the air resistance force.

We must analyze the forces in the Y axis, we see that we have the force of the air opposing the fall of Vin Diesel, in this way this force is negative since it opposes the movement, the fall.

∑Fy = 0

\(F_{weight}-F_{air}=F_{r}\\F_{r}= 184-82\\F_{r}=102[N]\)

Answer:

ke=648J

Explanation:

ke=1/2mv²

m=9kg

v=12m/s

1/2(9)(12)²

=648J

Answer:

Explanation:

A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure.

Answer:

Barometer

Explanation:

Its units are atmospheres (atm) or bars.

Based on the image provided and the location of deposition and erosion, it seems that the longshore current is moving towards the right.

Based on the image provided, it appears that the longshore current is traveling towards the right. This can be determined by looking at where deposition and erosion are occurring. Deposition is happening on the right side of the image, where sand is building up and forming a beach. Erosion, on the other hand, is happening on the left side of the image, where the waves are breaking against the cliff face and wearing it away. Longshore currents are generated by waves hitting the shore at an angle, causing the water to move parallel to the shore. In this case, the waves are coming in from the top left of the image and hitting the shore at an angle, which creates a longshore current that moves towards the right. As the water moves along the shore, it picks up sand and sediment and carries it with it. This sand is then deposited on the right side of the image, where the water slows down and loses energy. It's important to note that longshore currents can change direction depending on the direction of the incoming waves and the shape of the shoreline. But based on the image provided and the location of deposition and erosion, it seems that the longshore current is moving towards the right.

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Note the rate at which oil is flowing is: 7.19 m³/s . See the computation below.

We can use the principle of continuity of flow to solve this problem. According to this principle, the mass flow rate of the oil is:

m_dot = rho * A * v: where:

rho is the density of the oil,

A is the cross-sectional area of the pipe, and

v is the velocity of the oil.

The cross-sectional area of the pipe before the constriction is:

A1 = (pi/4) * d1² = (pi/4) * (0.978 m)² = 0.7526 m²

The cross-sectional area of the pipe after the constriction is:

A2 = (pi/4) * d2² = (pi/4) * (0.5868 m)² = 0.2701 m²

The velocity of the oil can be calculated using the principle of continuity of flow:

A1 * v1 = A2 * v2

where v1 is the velocity before the constriction and v2 is the velocity after the constriction.

Solving for v1, we get:

v1 = (A2/A1) * v2 = (0.2701 m^2 / 0.7526 m^2) * v2 = 0.3590 * v2

The pressure difference across the constriction is:

deltaP = P1 - P2 = 7600 N/m² - 5700 N/m² = 1900 N/m²

Using Bernoulli's equation, we can relate the pressure difference to the velocity difference:


deltaP = (1/2) * rho * (v2² - v1²)

Substituting the expression for v1, we get:

deltaP = (1/2) * rho * (v2² - 0.1290 * v2²)

Solving for v2, we get:

v2 = sqrt(2 * deltaP / rho * (1 - 0.1290)) = 20.16 m/s

Finally, the mass flow rate of the oil is:

m_dot = rho * A1 * v1 = 821 kg/m³ * 0.7526 m² * 0.3590 * 20.16 m/s
= 5904.4 kg/s

Converting to cubic meters per second, we get:

Q = m_dot / rho = 5904.4 kg/s / 821 kg/m³ = 7.19 m³/s

Therefore, the rate at which oil is flowing is 7.19 m³/s

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Answer:

Once we place a positive test at a point close to the sphere, we find that an electrostatic force is applied to the outside of the sphere. Therefore, at any point around the sphere, the electric field vector is radially outward.

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Jelly is a colloid where colloidal particles are solids which are dispersed in the liquid. Jelly is a fluid which can not be considered as a particular one kind of state. It is in the category of 'gel' which is a colloidal form.

Hope it helps!

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The scientific method include Observations >> Data; Factor manipulated >> Independent Variable, process to test >> experiment, guess >> hypothesis, results >> Conclusion and response >> dependent variable.

Observation is the first step of the scientific method, which then requires to raise a question that will be answered by a testable hypothesis.

The scientific method is a series of well-established steps used to collect scientific empirical data/evidence, which allow to test a given hypothesis.

In conclusion, the scientific method include Observations >> Data; Factor manipulated >> Independent Variable, process to test >> experiment, guess >> hypothesis, results >> Conclusion and response >> dependent variable..

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Aproximately 1.09 m/s was the locust's first speed.

In engineering mechanics, vectors are used to express values with both a magnitude and a direction. For analysis, vector representations of a variety of engineering quantities—including forces, displacements, velocities, and accelerations—are required.

Δy = vsin(θ)t - 0.5gt²

0 = v*sin(55°)t - 0.5(-9.81 m/s²)*t²

t = 2vsin(55°)/g

Now, we can use the horizontal motion of the locust to find the initial velocity v. The horizontal distance traveled by the locust is given by:

Δx = v*cos(55°)*t

Substituting the expression for t that we just found:

0.750 m = vcos(55°)2vsin(55°)/g

Solving for v:

v = √(0.750 mg/(2sin(55°)*cos(55°)))

v ≈ 1.09 m/s

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