An object is lifted to a certain height and then dropped. During the drop, which of the following is increased?

a) gravitational potential energy

b) kinetic energy

c) total mechanical energy

d) B and C

As light passes through transparent objects the speed at which it travels is

A concrete column has a diameter of 380 mm and a length of 2.6 m. if the density (mass/volume) of concrete is 2.45 mg/m3, determine the weight of the column in pounds.

Ben hit a 0.25kg nail into a wood with a 5.2kg hammer. If the hammer moves witht the speed of 52 m/s and two fifth of its kinetic energy is coverted to the internal energy of the hammber and nail. How much does the total internal. Energy increase

Eli stands on a skateboard at rest and throws a 0.5 kg rock at a velocity of 10.0m/s. Eli moves back at 0.05m/s. What is the combined mass of Eli and the skateboard

How many newtons of force would 200 grams apply? What would be the mass of an object that weights 7 N on earth? If an object weights 450 N. How much does it weight in pounds?

Is it possible to have motion in the absence of a net force?

There are 2 charged particles, A and B. You know that particle A is positively charged. When you place particle B next to particle A, then particle B starts moving away from particle A. What does this mean for particle B?

The speed of light is now to be defined 2.99792458x10^8 m/s express the speed of light to three significant figures five significant figures seven significant figures

An element that is a very reactive gas is most likely a member of what group?

Describe the concept of orbital motion as it relates to the earth., moon and sun