Explain working of electric motor

Matter can change its form but it cannot be destroyed. True False

What happens to a magnetic field if the current carrying wire A has three times as many loops but the same current as the current carrying wire B? A. Wire A will have a lower magnetic field than wire B. B.

Why can you still see the Moon during an eclipse?

A skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 13° with the horizontal. the rope moves parallel to the slope with a constant speed of 1.1 m/s.

What is the source of the radioactivity?

The acceleration of an object is proportional to which of the following? the mass the energy of the object the inverse of the mass the inverse of the force applied

Suppose you squeeze a sponge into a small ball. does the mass of the sponge change? Does it's density change?

A solid round bar with diameter of 2-in has a groove cut to a diameter of 1.8-in, with a groove radius of 0.1-in. the bar is not rotating.

If a pilot pulls her 12.0 kg rollaboard suitcase along the ground with a force of 25. N for 10 M. The handle she pulls on makes an angle of 36.5 degrees with the horizontal. How much work does she do over the ten meter distance?

What happens to the density when water is poured into a empty glass?