An electric refrigerator rated 400 W operates 8 hours a day. Find the energy used per day in KWh.

A 5.5 kg box is pushed across the lunch table. The net force applied to the box is 9.7N. What is the acceleration of the box?

How are red dwarf stars and yellow dwarf stars alike?

a skydiver with a mass of 60 kg jumps out of an airplane at a height of 5 5000m. the acceleration due to gravity is 9.8 m/s2. what is the gravitational potential energy of the skydiver

You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s The ball has energy Calucate it

A race car driver must average 200km/hr for four laps to qualify for a race. Because of engine trouble, the car averages only 170km/hr over the first two laps. What is the average speed must be maintained for the last two laps

How far will a ball travel that goes 35 meters per second for 18 seconds?

a 5.00 kg ball accelerates at a rate of 2.00 m/s squared for 1.50 seconds. calculate the balls momentum after the acceleration

An ice cube is dropped into a glass of water. Describe the motion of the ice cube and explain why it moves this way

How does the overtone number relate to the standing wave pattern number

Which of the following statements about Em waves is true? A. Em waves all have the same speed B. Em waves all have the same wavelength C. Em waves only travel through water D. Em waves all have the same amount of energy