A 200 kg crate is pulled along a level surface by an engine. the coefficient of friction between crate and surface is 0.4.

a. how much power must the engine deliver to move the crate at 5.0m/s.

b. how much work is done by the engine in 180s

Which of the following is a correct interpretation of the expression

A condition that occurs in the troposphere when warm air sits on top of cold air is called what

What are the characteristics of globular cluster stars?

A complete series circuit consists of a 12.0 V battery, a 4.70 O resistor, and a switch. The internal resistance of the battery is 0.30 O. The switch is open. What does an ideal voltmeter read when placed across the terminals of the switch? 12.0 V 9.

How does distance and mass affect gravitational force?

Why is carbon and nitrogen important?

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.