When a can is crushed did it undergo a physical change

The closer together a magnets field lines are,

A conducting sphere of radius r1 = 0.21 m has a total charge of Q = 2.9 μC. A second uncharged conducting sphere of radius r2 = 0.48 m is then connected to the first by a thin conducting wire.

Which scientist is not known for his work with electricity? A. Edison B. Franklin C. Van de Graaff D. All of these people contributed to our understanding of electricity.

A 50 kg box hangs from a rope. what is the tension in the rope if a. the box is at rest? b. the box has vy = 5.0 mis and is speeding up at 5.0 m/s2?

What occurs when the velocity of earth is doubled? a. the orbit of earth around the sun becomes smaller c. the earth escapes the sun b. the orbit of earth does not change d. the orbit becomes more elliptical?

Which statement describes why ocean currents are considered convection currents? A) Warm water moves counterclockwise in the northern hemisphere B) Warm water rises and cold water moves in to replace it.

What kind of waves require a medium to travel? Question 6 options: Light Waves Mechanical waves All waves need a medium to travel Electromagnetic waves

During takeoff, a plane accelerates at 4 m/s and takes 40 s to reach takeoff speed. What is the velocity of the plane at takeoff?

What are the physics terms behind watching TV?

What is the value of sin θ?