A body of 2.0kg mass makes an elastic collision with another at rest and continues to move in the original direction but with 1/4 of it's original speed. what is the mass of the struck body?

A thin, flat washer is a disk with an outer diameter of 14 cm and a hole in the center with a diameter of 7 cm. The washer has a uniform charge distribution and a total charge of 8 nC.

Determine the heat given off to the surroundings when 9.0 g of aluminum reacts according to the equation 2al + fe2o3 → al2o3 + 2fe, δh°rxn = - 849 kj/mol.

Whitch of the following is likely the best electrical insulator

A day on a distant planet observed orbiting a nearby star is 21.5 hours. also, a year on the planet lasts 59.1 earth days.

Which region of the atmosphere is filled with charged particles?

All of the following shows density and buoyancy except: A. ice cubes floating in a glass of iced tea B. the amount of hot soup contained in a bowl C. a hot air balloon moving through the air D. a boulder resting at the bottom of the ocean

A 61 kg skier on level snow coasts 184 m to a stop from a speed of 12 m/s. (a) Use the Work-Energy Theorem to find the coefficient of kinetic friction between the skis and snow.

A zebra starts from rest and accelerates at 1.9 m/s2 what will be the acceleration after 5 seconds

When you measure the temperature of an object you are measuring

What are two ways the Doppler effect can be applied in everyday life?