Beryllium, magnesium and calcium all are located in the alkaline earth group. Which of these characteristics do these elements have in common?

Which object would have more potential energy, a bowling ball stored on a high shelf, or a base ball on the same shelf? Why? Which one would you rather have fall on your head?

A 100-g toy car moves along a curved frictionless track. At first, the car runs along a flat horizontal segment with an initial velocity of 2.77 m/s. The car then runs up the frictionless slope, gaining 0.

An object traveling in a straight line accelerates. What will definitely happen due to the acceleration?

Suppose an element had an atomic number of 52. How many protons would that element have?

Why was Mercury unable to retain an atmosphere during its formation?

The combustion of fuel in a piston cylinder causes an internal energy change of - 2836 kJ. The components surrounding the cylinder absorb 963.6 kJ of heat. How much work can be done by the fuel on the piston in the cylinder?

A car travelling at 20 m/s due north along the highway makes a right turn on to a side road that heads due east. It takes 50 s for the car to complete the turn. At the end of 50 s, the car has a speed of 15 m/s along the side road.

We see a full moon by reflected sunlight. how much earlier did the light that enters our eye leave the sun

What is energy at motion called

How far would a baseball travel in 0.5 s if it is thrown at a speed of 20 m/s? 40 s 10 m O 10s 40m