70-kg trampoline artist jumps upward from the top of a platform with a vertical speed of 5.7 m/s.

Which of the following is NOT an advantage of using a wheel and axle? 1. It can increase speed at which something turns 2. It can reduce the speed at which something turns 3. It can reduce the amount of effort needed to turn something 4.

Cold blooded animal, feels at home in the water and on land

What is environmental remediation?

What is the mass of a baseball that has a kinetic energy of 100 j and is traveling at 5 m/s'?

Which object has the highest temperature? (see chart below) Object Kinetic Energy Of Molecules (J) a 1.50 x 10^4 b 1.73 x 10^5 c 2.73 x 10^3 d 5.06 x 10^4 Answers: (a) object C (b) object A (c) object B (d) object D

In a laser, electrical energy is changed to light energy, and a small amount of the energy is wasted as heat. Describe the total amount of the heat in the system (using the conservation of energy).

What is the name for a star and planets held together by gravity? A. solar system B. galaxy C. black hole D. supernova

When a car turns a corner on a level road, which force provides the necessary centripetal acceleration? 1) gravity 2) normal force 3) air resistance 4) tension 5) friction

Use Newton's universal law of gravitation to explain why gravity is greater on Earth than on Mercury.

What is a magnetic field and how does it interact with magnetic materials?