The main light gathering device of a refractor telescope is

The transfer of electrons occurs because

A bullet of mass m = 10 gram strikes a ballistic pendulum of mass m=2.0 kg. the center of mass of the pendulum rises a vertical distance of h=12 cm. assuming the bullet remains embedded in the pendulum, calculate its initial speed.

In what two instances does power output become greater

During which stage of new-product development is management most likely to estimate the minimum and maximum sales to assess the range of risk in launching a new product? a. test marketing b. marketing strategy development c. business analysis d.

When a substance freezes, its atoms become locked in place so they do not move from one position to another. Therefore, any substance that is frozen is a plasma. gas. liquid. solid.

a the average distance from the Sun to Pluto is approximately 6.10 x 1 0 ^9. how long does it take light from the sun to reach Pluto?

A 25kg object moves from left to right at a speed of 30km/h. What net force is required to keep this object moving in a straight line at constant speed

Ganymede is one of the many moons of jupiter. it is nearly a sperical in shape. it is larger than the planet mercury and slightly smaller than the planet mars.

Which of the following statements about two carts rolling on a track and experiencing a completely inelastic collision is TRUE? a. The kinetic energy of the system is conserved to good approximation. b.

If element X has 17 protons, how many electrons does it have?