A jack for a car requires a force of 120 lbs to lift a 3,000 lb car. what is the ratio of the cars weight to the force required to lift the car?

While sitting in class your body exerts a force of 600 N on your chair. how much work did you do?

The weight of an object on a planet depends not only on its mass, but also on its distance from the planets center. This table lists the weight of 80 kg on each planet in the solar system.

The gravitational acceleration on the moon is about one sixth the size of the gravitational on earth. According to newton's second law of motion, what happends to an astronaut who goes to the moon

A 2000-lb car drives from Denver (altitude: 5280 feet) to Los Angeles (sea level). What is its change in potential energy, in BTU? g = 32.174 ft/s² Provide your answer rounded to one decimal place, and make sure to include units.

What is the mass number of the particle emitted from the nucleus during beta minus decay? What kind of charge does the particle emitted from the nucleus during beta minus decay have?

Question 1 [7] Hydrogen gas is used in a Carnot cycle having an efficiency of 60% with a low temperature of 300K. During the heat rejection the pressure changes from 90 kPa to 120 kPa.

Technician A says a pull to the right during braking could be caused by a defective metering valve. Technician B says a pull to the left could be caused by a defective proportioning valve. Which technician is correct

Can Radiation transfers energy by moving matter.

Which of the following decreases the dissolving rate of a solid in water?

Why might a plant that normally grows in one environment not grow well in a different environment?