When expressing the unit for work, which of the following is the correct choice?

The volume of an object as a function of time is calculated by v = At3+B:t where t is time measured in seconds and v is in cubic metres. Determine the dimension of the constants A and B.

What is the purpose of the hydrologic cycle

Which has more mass: a dollar bill or a quarter? Why?

Calculate the refractive index of the substance if the speed of light in the medium is 210,000 km/s. 2.43 1.43 0.7 1.89

A woman exerts a horizontal force of 10 pounds on a box as she pushes it up a ramp that is 4 feet long and inclined at an angle of 30 degrees above the horizontal. Find the work done on the box.

What is impossible for a machine to do? A) do a greater amount of work than the amount of work done on the machine B) apply a force in a direction that is different than the direction of the force applied to the machine C) move an object a greater

The phosphorus cycle keeps phosphorus availability naturally low. True or false?

Which best describes nuclear fission? A. A nucleus spontaneously splits and absorbs energy. B. Two nuclei spontaneously combine and absorb energy. C. A nucleus collides with a neutron and splits, releasing energy. D.

Which of the following is an example of conduction? A. A metal spoon becomes warm when placed in a cup of hot tea. B. Campers warm up while sitting by a campfire. C. A dog's bowl of water warms up out in the Sun. D.

Hink about the friction activity. Return to this activity to see it again if you need to. Explain what happened in each of the two demonstrations, and then compare them. Use the terms resistance, vacuum, gravity, velocity, and friction.