How fast must an object move before its length appears to be contracted to one-fourth its proper length?

What's the velocity of an 11-kilogram object with 792 joules of kinetic energy? 7 m/s 8 m/s 9 m/s 11 m/s 12 m/s

When unequal resistors are connected in parallel in a circuit,?

What is the net force acting on an object that has a mass of 20 kg and an acceleration of 2 m/s2?

Electromagnetic waves have the ability to travel through empty space because they do not require a medium to travel through. True or False?

Which statement best explains acceleration? It is the total distance covered over a period of time. It is a change in velocity over a period of time. It is a change in displacement over a period of time.

Gizmo answer sled wars

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.