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?

What observations characterize solar maximum?

What type of energy transfer is made possible by a nine-volt battery in a calculator? a. light to mechanical b. electrical to chemical c. chemical to electrical d. electrical to electromagnetic

The emf of a battery is: Group of answer choices the force per charge it provides the energy it provides the work per Coulomb it provides the power it provides the current it provides

The nucleus and the subatomic particles in the nucleus, what is the charge of the nucleus of an atom?

The acceleration due to gravity on the moon is 1.6 m/s2, about a sixth that of Earth's. Which accurately describes the weight of an object on the moon? An object on the moon is 1/6 times lighter than on Earth.

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?