A tennis ball is served horizontally from 2.4m above the ground at 30 ms

The rod is made of A-36 steel and has a diameter of 0.24 in. If the rod is 4 ft long when the springs are compressed 0.7 in. and the temperature of the rod is T = 50 ∘F, determine the force in the rod when its temperature is T = 150 ∘F.

Explain why you think technology is constantly changing.

7. Peter found an amazing fact in an amusement park when he tried to ride the Magic Mountain Superman. Powerful magnets accelerate a car and its riders from zero to 45 m/s in 7 seconds. Suppose the mass of the car and riders is 5,600 kg.

Random kinetic energy possessed by objects in a material at finite temperature. An object that feels hot has a lot of this.

Sam's bike tire contains 15 units of air particles and has a volume of 160mL. Under these conditions the pressure reads 13 psi. The tire develops a leak. Now it contains 10 units of air particles and has contracted to a volume of 150mL.

Which element is most likely to carry electric current easily?

What is energy? it's from my physics book

An object is thrown upward with a speed of 12 m/s on the surface of planet x where the acceleration due to gravity is 1.5 m/s2. how long does it take for the object to reach the maximum height?

How fast must a 0.142-kg baseball move in order to have the same momentum as the bus?

What is resistance? Difference between resistance and resistivity.