A girl scout is pulling her 30 kg wagon of cookies with a force of 60 N to right. Friction pulls back with a force of 15 N left. What is net force on the wagon

An astronaut finds himself on a spherical asteroid whose radius is 500 km and whose mass is 1.2 x 1022 kg.

A 43 kg girl and a 7.1 kg sled are on the frictionless ice of a frozen lake, 12 m apart but connected by a rope of negligible mass. The girl exerts a horizontal 6.6 N force on the rope.

A carnot engine rejects 80 mj of energy every hour by transferring heat to areservoir at 10°c. determine the temperature of the high-temperature reservoir and the power produced if the rate of energy addition is 40 kw.

Explain why the year 1800 was not a leap year, even though years divisible by four are normally considered to be leap years.

A car of mass 550 kg is moving at a speed of 1.5 m/s. A man pushes the car, increasing the speed to 3.2 m/s. How much work did the man do? A. 2816 J B. 3435 J C. 2197 J D. 4123 J

Calculate the kinetic energy of a truck that has a mass of 2900kg and is moving at 55m/s.

In the calorimetry experiment which energy will be calculated during the heat exchange if water is used?

A turtle, moving at a constant velocity of 0.9 m/s due south, is in a race with a rabbit, who runs at a moderate speed of 9 m/s.

What might cause a theory to change over time?

If a car accelerated from 5 m/s to 25 m/s in 10 seconds what is it's acceleration?