Melanie kept a potted in closed box with a hole on one side as shown in the diagram above. Which change would she MOST LIKELY observe in the part after a few days
A.The plant continues to grow in the same direction
B.The roots bend toward the hole in the side of the box
C.The leaves will turn away from the hole in the side of the box
D.The stem bends toward the hole in the side of the box

Increase the frequency of the incident light. The photoelectric effect occurs when light of a sufficient frequency strikes a metal and frees electrons from the metal's surface. The energy of the incident photons must be greater than the energy required to remove the electrons, known as the work function. Thus, increasing the frequency of the incident light will result in higher energy photons, increasing the likelihood of electron ejection in the photoelectric effect.

The kinetic energy of the photoelectrons that are released will grow as the light amplitude increases, according to the wave model of light, yet the measured current will increase as the frequency increases. In contrast to expectations, studies revealed that raising the light's frequency and amplitude raised the current and the photoelectrons' kinetic energy, respectively.

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Answer:

\(v_x=34 m/s\)

\(v_y=53.9\ m/s\)

Explanation:

Horizontal Launch

When an object is thrown horizontally with a speed v from a height h, it describes a curved path ruled by gravity until it eventually hits the ground.

The horizontal component of the velocity is always constant because no acceleration acts in that direction, thus:

vx=v

The vertical component of the velocity changes in time because gravity makes the object fall at increasing speed given by:

\(v_y=g.t\)

The horizontal component of the velocity is always the same:

\(v_x=34 m/s\)

The vertical component at t=5.5 s is:

\(v_y=9.8*5.5=53.9\)

\(v_y=53.9\ m/s\)

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\\)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 1000 \times {26}^{2} \\ = 500 \times 676 \\ = 338000\)

We have the final answer as

Hope this helps you

Given:

The distance traveled towards the north is d= 12 km

The velocity is v = 6.5 km/h

To find: the time

Explanation:

The formula to calculate time is

Substituting the values, the time will be

Final Answer: The time taken is 1.86 h

(a) The horizontal force exerted on the ladder by the ground is 196.97 N.

(b) The coefficient of static friction between the ladder and the ground is 0.428.


(a) First, we'll find the torque about the bottom of the ladder. Torque = Force × Distance × sin(Angle). Torque due to firefighter: 830 N × 4.20 m × sin(57°) = 2871.77 Nm.

Torque due to ladder's weight: 520 N × (14 m / 2) × sin(57°) = 3619.83 Nm. Sum of torques = 0, so horizontal force (Fh) = (Torque_firefighter - Torque_ladder) / (14 m × sin(57°)) = 196.97 N.

(b) When on the verge of slipping, the vertical force (Fv) due to friction balances the weight forces.

Fv = 830 N + 520 N = 1350 N.

The force of static friction (Fs) = Fh = 196.97 N. The coefficient of static friction (μs) = Fs / Fv = 196.97 N / 1350 N = 0.428.

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Answer:

About 3.54x1022 N.

Explanation: The gravitational force between the Sun and the Earth is about 3.54x1022 N. This force keeps the Earth orbiting around the Sun. The gravitational force from the other planets does slightly affect the Earth's orbit, but the gravitational pull from the other planets and the Moon is still very small. Sorry if I get this wrong. I am in 5th grade! ♥

The flux through each side is zero, the total flux through the square is also zero. Therefore, the electric field does not pass through the square in the xy-plane at z = 0.

The flux of an electric field through a surface is given by the dot product of the electric field and the surface area vector. In this case, the electric field E is in the z-direction, so it does not contribute to the flux through the xy-plane. Therefore, we only need to consider the flux through the sides of the square that are perpendicular to the z-axis. These sides are along the +x and +y axes and have length 0.370m each.

The surface area vector for the +x side is (0.370m) * (0m) * (+1), and for the +y side it is (0m) * (0.370m) * (+1). The dot product of the electric field E and the surface area vector for each side gives:

For the +x side: (747 N/(C*m))x * (0.370m) * (0m) * (+1) = 0

For the +y side: (747 N/(C*m))x * (0m) * (0.370m) * (+1) = 0

Since the flux through each side is zero, the total flux through the square is also zero. Therefore, the electric field does not pass through the square in the xy-plane at z = 0.

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To calculate the distance at which two headlights are marginally resolved by a diffraction-limited eye lens, we can use the Rayleigh criterion:

sin(θ) = 1.22 * λ / (D * n)

Where θ is the angle between the two headlights, λ is the wavelength of light (575 nm in this case), D is the diameter of the pupil (which we'll assume to be 5 mm), and n is the index of refraction inside the eye (1.33 in this case).

Solving for the angle θ gives:

θ = sin^-1(1.22 * λ / (D * n))

θ = sin^-1(1.22 * 575 nm / (5 mm * 1.33))

θ ≈ 0.002 radians

Now, we can use basic trigonometry to calculate the distance between the two headlights that corresponds to this angle. If we assume the headlights are at the same height as our eyes (about 1.6 meters), we get:

distance = (1.6 m) * tan(θ / 2)

distance ≈ 4.4 km

So, if the lens of your eye is diffraction-limited, you could resolve two headlights that are about 4.4 kilometers apart. However, as mentioned earlier, this is not the only limitation to resolving headlights at a distance – there are other factors such as the size of the receptors in the retina that come into play.
Hi! To determine the distance at which two headlights are marginally resolved when the lens of your eye is diffraction-limited, we can use the Rayleigh criterion. The Rayleigh criterion states that two points are just resolvable when the central maximum of one's diffraction pattern coincides with the first minimum of the other's diffraction pattern.

The formula for the angular resolution (θ) based on the Rayleigh criterion is:

θ = 1.22 * (λ / D)

where λ is the wavelength of light (575 nm) and D is the diameter of the lens (approximated as the pupil size). In the human eye, the pupil size varies, but let's assume a typical diameter of 5 mm or 0.005 m.

θ = 1.22 * (575 * 10^(-9) m / 0.005 m)
θ ≈ 1.4 * 10^(-4) radians

Now, let's use the small angle approximation (θ ≈ sin(θ) ≈ tan(θ)) to find the distance (L) at which the headlights are marginally resolved:

θ ≈ (headlight separation) / L

Assuming a standard headlight separation of 1.2 meters, we can solve for L:

1.4 * 10^(-4) ≈ 1.2 m / L
L ≈ 1.2 m / (1.4 * 10^(-4))
L ≈ 8,571 meters

So, when the lens of your eye is diffraction-limited, the two headlights are marginally resolved at approximately 8,571 meters. Keep in mind that this is a theoretical calculation and might not exactly match real-life observations due to aberrations in the lens and the size of the receptors in your retina.

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Answer:

They will strike at the same time

Explanation:

Both will hit the ground at the same time.

What is total energy ?

Total energy of any object under consideration is the sum of potential energy (P.E) and kinetic energy (K.E) and is constant throughout the motion.

Here, it is given that the both rocks are falling from same height and

there is no initial velocity in vertical direction for both rocks

The only external force that is applied on them is gravitation force which is also constant in both cases.

Therefore, they will hit the ground at the same time considering air resistant and all others factors neglected.

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Concentrated solar power facilities are solar power—generating facilities that generate electricity at large centralized facilities and transmit that power to homes and businesses through the electric grid .

Solar power refer to electric power or electricity that is generated from sun rays or radiations while using solar panels and other technologies.

Therefore, Concentrated solar power facilities solar power—generating facilities that generate electricity at large centralized facilities and transmit that power to homes and businesses through the electric grid.

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Answer:

C. Pulmonary endurance

Explanation:

I'm pretty sure it's "C" because cardiovascular and pulmonary endurance are the same thing and usually you'd hear cardiovascular more than pulmonary.

Sorry if I'm wrong!

Answer:

c

Explanation:

i just took the test

Given data,

Mass,

Acceleration,

Spring constant,

Acceleration due to gravity,

Accelerating upward,

Comsider the formula for force.

Thus, the spring compression is 25.68 cm.

Answer:

International Bureau of Weights and Measures (BIPM) is an international organization founded to bring about the unification of measurement systems, to establish and preserve fundamental international standards and prototypes, to verify national standards, and to determine fundamental physical constants. The bureau was established by a convention signed in Paris on May 20, 1875, effective January 1876. In 1921 a modified convention was signed.  The convention provides for a General Conference that meets every four years to consider required improvements or modifications in standards. An International Committee of Weights and Measures, composed of 18 scientists elected by the conference, meets annually to monitor worldwide uniformity in units of measure.

Hope this helps!!! :)

(If not please comment I will try to help)

The diagram of a thermocouple that can be used to measure the temperature of the sulfur as it cools, created with MS Word is attached.

A thermocouple is a device that consists of two different types of metal wires joined together at one end. When the junction of the two metals are heated or cooled, a voltage is produced that can be correlated to temperature. Thermocouple are commonly used to measure temperature in a variety of applications because they are rugged, inexpensive and can measure a wide range of temperatures.

To use a thermocouple to measure the temperature of molten sulfur in a beaker, you would need to insert the junction (the end where the two metal wires are joined) into the molten sulfur. The other ends of the metal wires would need to be connected to a device that can measure the voltage produced by the thermocouple. As the sulfur cools and its temperature changes, so will the voltage produced by the thermocouple. By measuring this voltage and using a reference table or equation that correlates voltage with temperature for that specific type of thermocouple, the temperature of the sulfur as it cools can be determined.

Please find attached the drawing of a thermocouple which can be used to determine the sulfur as it cools.

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The :Gene, chromosomes, and nucleus is the cell components are are most involved in determining an organisms traits.

As it relates to genetics, a trait is a unique quality about a person. Genes, environmental influences, or a combination of both can influence traits. Qualitative traits, like eye color, can also be quantitative (such as height or blood pressure).

Your traits, which are features or characteristics that you inherit from your parents, are determined by the information carried by your genes (say: trates). In the human body, each cell has between 25,000 and 35,000 genes.

A trait is a unique attribute, propensity, or characteristic that someone, something, or both have. In those early months, many of our personality traits are formed. Humans are creative beings. Synonyms: trait, quality, feature, attribute additional words for characteristic

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Answer:

get some

get some ⛽⛽⛽⛽⛽

pour the ⛽ on the module,

get that on itttttt and booooooommmm

Explanation:

F min=61.25N Ahmed is supporting a 12.5 kg, 4.00 m long board on one end. Judi responds to his request for assistance by accelerating the speed of the motion, and is the rate for which velocity varies over time.

acceleration is the rate of change in both speed and the direction of velocity over time. When anything moves faster or slower in a straight line, it is said to have been accelerated. So because direction is constantly changing, even motion on the a circle accelerates at a constant pace.

This means that a velocity change can be either an alteration in the speed or direction of motion of an object. Acceleration is the process by which an item alters its direction, speed, or both.

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Given data:

* The electrostatic force of repulsion between the charged bodies in the initial state is,

* The distance between the charged bodies in the initial state is,

* The distance between the charged bodies in the final state is,

Solution:

According to Coulomb's law, the electrostatic force of repulsion between the charged bodies in the initial state is,

where k is the electrostatic force constant, q_1 is the charge on the first charged body and q_2 is the charge on the second charged body,

The electrostatic force of repulsion between the charged bodies in the final state is,

Substituting the known values,

Thus, the electrostatic force of repulsion between the charged bodies in the final state is,

Answer:

I believe this problem is 60 divided by 3 = 20m/s

That’s the formula.

Explanation:

You can change the volume, pressure, or temperature of a gas.

Change the volume of a gas to raise or lower the temperature. As the temperature increases, the gas expands and increases in volume. Conversely, as the temperature decreases, the volume of the gas decreases. As the temperature increases, the volume of the gas increases. Conversely increasing the pressure will decrease the volume of the gas.

Reducing the gas volume increases the gas pressure. An example of this is when gas is trapped inside a cylinder by a piston. When the piston is pushed in, the volume occupied by the gas decreases, so there is less room for gas particles to move. The relationship between pressure and volume Boyle's Law. As the pressure of a gas increases the gas particles are pushed together thus decreasing the volume of the gas.

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Pressing a lever in the box's corner is the sole method to get rid of the shocks. The rat picks up pressing the lever quite quickly. This is an illustration of negative reinforcement.

The technique of negative reinforcement can be applied to aid in teaching particular actions.

When something unpleasant or uncomfortable is taken away in response to a stimulus, this is known as negative reinforcement.

Target behavior should gradually grow better with the hope that the unpleasant item will go away.

A rat is placed in an environment where the floor gives the rat small electric shocks. The only way to get rid of the shocks is to press a lever in the corner of the box.

The rat quickly learns to press the lever. This is an example of  negative reinforcement

Hence the given condition is an example of negative reinforcement.

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Decrease

The mathematical relationship between heat, internal energy and work done by the system is given as:

△U = Q + W

where △U is the change in the internal energy

W is the workdone by the system

Q is the heat energy in the system

Since the workdone by the system is negative, when a system does work, there is a depletion in the amount of energy possessed by the system.

Due to this loss of energy by the system as a result of the workdone, the internal energy decreases.

F=m*a

T = 142N

Work = Force x distance

distance = 6.1 M

Force = 142 x cos 37 = 113.4 N

W= 113.4N x 6.1M = 691.78 J

Answer:

zero

Explanation:

If the orbital distance of earth was greater than its actual value, the parallax angle to nearby stars would be Higher.

Because of the inverse relationship between parallax angle and distance, the parallax angle decreases as the distance to the star rises.

The Earth's orbit around the sun. There are no two eyes that can accurately determine the distances to other stars. Instead, the starting point for these calculations is the Earth's orbit around the sun.

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I am a field physicist and I perform QA measurements of various types of X-ray units. Due to recent changes in legal requirements in my country, we have to provide the radiation output value for each unit tube measured in m Gy MA's at 1 meter from focal spot) at filtration of 2,5 mm Al equivalent. a. True

This unfortunately cannot be directly achieved for interventional radiology units, some CTs and occasionally other types of X-ray units. A filter of 2 mm of aluminum will absorb the soft, or less penetrating, radiation. Aluminum is often used as a filter in radiography because it effectively absorbs low-energy, soft X-rays, while allowing more penetrating, higher-energy X-rays to pass through. This helps improve image quality and reduce patient exposure to unnecessary radiation.

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1) Frequency

2) I dont know this one sorry