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MArishka [77]
3 years ago
13

PLZ HELP NOW

Physics
1 answer:
ZanzabumX [31]3 years ago
4 0

Answer: mass x height x gravitational field strength (g)

note: gravitational field strength (g) = 10 N/Kg

55 x 15 x 10 = 8250

gpe = 8250j

Explanation:

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In Example Suppose the rod stays on the wall in the same position, but the hinge is moved to be at the center of mass position o
navik [9.2K]

Answer:

A

Explanation:

The change in the system’s gravitational potential energy would be zero

4 0
3 years ago
In static equilibrium, the potential difference between two points inside a solid piece of metal Group of answer choices is zero
levacccp [35]

Answer:

it is zero because the electric gap is zero within the material

Explanation:

In a metal you have many free electrons, and fixed charges formed by nuclei and electrons that are not free; therefore the charge carriers are the free electrons, these have the same negative charge and due to the lectrostatic force they repel each other as far as possible without leaving the material, this implies that at two points there must be the same potential because otherwise there would be a net Caesarian force accumulating charge in a part that would be eliminated by the Coulomb force.

With this we can review the statements the strap is: it is zero because the electric gap is zero within the material

4 0
3 years ago
Calculate the energy transferred from a glass of water in order to just melt 100 g of ice cubes at 0°C.
Ludmilka [50]

Answer:

34000 J or 34 kJ

Explanation:

From the question, The energy needed to just melt the ice cube does not requires any external temperature or change in temperature, Hence it is called  latent heat

By Applying,

Q' = C'm........................ Equation 1

Where Q' = Latent heat, C' = Specific latent heat of fusion of water, m = mass of ice.

Given: C' = 340000 J/kg, m = 100 g = 0.1 kg

Substitute into equation 1

Q' = 0.1(340000)

Q' = 34000 J

Q' = 34 kJ

3 0
3 years ago
Carter pushes a bag full of basketball jerseys across the gym floor. The bag weighs 21 newtons. If he pushes the bag 9 meters in
Virty [35]
He uses 63 watts.
..............................

6 0
3 years ago
Will mark the brainliest
AysviL [449]

Answer:

The impulse transferred to the nail is 0.01 kg*m/s.

Explanation:

The impulse (J) transferred to the nail can be found using the following equation:

J = \Delta p = p_{f} - p_{i}

Where:                                                                

p_{f}: is the final momentum

p_{i}: is the initial momentum

The initial momentum is given by:

p_{i} = m_{1}v_{1_{i}} + m_{2}v_{2_{i}}

Where 1 is for the hammer and 2 is for the nail.

Since the hammer is moving down (in the negative direction):

v_{1_{i}} = -10 m/s

And because the nail is not moving:

v_{2_{i}}= 0                      

p_{i} = m_{1}v_{1_{i}} = 0.25 kg*(-10 m/s) = -2.5 kg*m/s

Now, the final momentum can be found taking into account that the hammer remains in contact with the nail during and after the blow:

p_{f} = m_{1}v_{1_{f}} + m_{2}v_{2_{f}}

Since the hammer and the nail are moving in the negative direction:

v_{1_{f}} = v_{2_{f}} = -9.7 m/s

p_{f} = -9.7 m/s(7 \cdot 10^{-3} kg + 0.25 kg) = -2.49 kg*m/s

Finally, the impulse is:

J = p_{f} - p_{i} = - 2.49 kg*m/s + 2.50 kg*m/s = 0.01 kg*m/s

Therefore, the impulse transferred to the nail is 0.01 kg*m/s.

I hope it helps you!                                                                                                                                                                                                                                                                                                                                                                                                                    

7 0
3 years ago
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