What is the evidence that a large fraction of the matter in the universe is invisible?

How many kilocalories are generated when the brakes are used to bring a 1200-kg car to rest from a speed of 95 km/h? 1 kcal = 4186 j?

A car with a mass of 1,500 kg requires a centripetal force of 640 N to safely follow a circular curve in the road at 13.4 m/s. What is the radius of the curve?

A cannonball is launched from the ground with 48279 Joules of kinetic energy. How much gravitational potential energy will the cannonball hold when it has reached it's highest height? How do you know?

A very hot gas made of particles with an electric charge is a?

Describe What It Was Like Before The Big Bang. Vision It In Your Head. What was it like. How did it look?

3. What is the kinetic energy of a 1300 kg car moving at 26.3 m/s?

Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a balance and a marble. Which statement best describes what Kendall can do? A.

2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid. B. lower than 7 is considered basic. C. of 6 is considered neutral. D. close to 14 is considered a strong base.

If a car rolls gently off a vertical cliff, how long does it take to reach 90km/hr.

In the game of volleyball, what skill relates to Newton's second law