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Questions in physics

[Done] Explain why the gravitational acceleration of any object near Earth is the same, regardless of the object's mass.

[Done] What's the answer to this problem?

[Done] The copper wire and bulb are connected in series with a 220 V electric supply. Why does only the electric bulb glow while the copper wire remains unchanged? **Give a reason to support your answer.**

[Done] Give three examples to show work being done.

[Done] In what situation does friction make an object change its shape?

[Done] The particle model of light explains which light behaviors?

[Done] If you push a chair across the floor at a constant velocity, how does the force of friction compare with the force you exert? Explain.

[Done] Explain why dogs pant during hot summer days using the concept of evaporation.

[Done] A uniform wire is cut into 4 segments. Each segment is twice as long as the previous segment. If the shortest segment has a resistance of 4 ohms, find the resistance of the original wire.

[Done] What are radio waves?