A pool can be filled by a pipe in 3 hours. it takes 3 times as long for another pipe to empty the pool. how long will it take to fill the pool if both pipes are open?

Why friction made it difficult to discover Newton's first law of motion.

A 190-N box is placed on an inclined plane that makes a 20.0° angle with the horizontal. Find the component of the weight force parallel to the plane's surface.

On Earth, the white colored paper represents areas that are

True or false. The Axis powers were made up of a coalition of countries that opposed the Allied powers in World War II.

Texas's relative location near the Gulf of Mexico A. affects the amount of sunshine it receives. B. greatly affects every part of Texas. C. has little effect on Texas's climate. D. affects the amount of rainfall it receives.

1. A 2000kg truck at rest accelerates to 45m/s in 7 seconds. What is its change in kinetic energy?

The speed with which force is developed by skeletal muscles is determined by the

What aviation first is paul maccready credited with

Why is the use of an international system of measurement important for science?

Would u do more lifting putting a box on the table or putting it on a shelf