Explain the law of conservation of momentum.

Which consumes more energy, a 1.3 kw hair dryer used for 10 min or a 10 w night light left on for 24 hr?

What is the difference between momentum and kinetic energy?

Which of the following are usually not shown in a chemical equation? A. reactants B. physical state C. products D. catalysts

A 0.90-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 4.0 N for a distance of 3.0 m. How much farther would the force have to act for the block to have 61 J of kinetic energy?

Aluminum, carbon, and calcium are examples of what type of matter? Solution Heterogeneous mixture Element Compound

What is the difference between contact forces and forces that act through a force field?

Suppose two parallel-plate capacitors have the same charge Q. but the area of capacitor 1 is A and the area of capacitor 2 is 2A. 1.

You want to launch a stone using the elastic band of a slingshot. The force that the elastic band applies to an object is given by F = - α∆s4, where α = 45 N m4 and ∆s is the displacement of the elastic band from its equilibrium position.

Which of the following statements regarding emails is true

If your fitness evaluation score is not satisfactory, set a new goal for the assessment and train for that goal. true or false