a custodian pulls a vacuum 13.5 m with a 33.9 N force at a 55 degree angle, against a 14.1 N friction force. Find the work done by the custodian.

How would the speed of Earth's orbit around the sun change if Earth's mass increased by 4 times? a. It would increase by a factor of 2 c. It would decrease by a factor of 2 b. It would increase by a factor of 4 d. The speed would not change

For which function is a heat engine most likely used? starting an air conditioner running a car igniting a furnace activating a thermostated?

Which planet, when viewed through a telescope, appears as a reddish ball interrupted by some permanent dark regions that change intensity?

What is the kinetic energy of a 150gram object moving at a velocity of 100m/s?

An in-line skater traveling in a straight line goes from 3 m/s to 9 m/s in 3 s. What is the acceleration?

The passing of heat through a material while the material itself stays in place. A. radiation B. conduction C. convection

What would result from under-coverage? A. a lack of accurate result B. an incorrect independent variable C. an experiment D. accurate result

What can be said about the force of gravity acting on an object that is floating stationary underwater and not moving up or down? A. The buoyant force equals the force of gravity, so there is no net force. B.

A frog in a hemispherical pod finds that he just floatswithout sinking in a fluid of density 1.25 g/cm3. If the pod has a radius of3.00 cm and negligible mass, what isthe mass of the frog?

What is the reasonable estimate for Lim g (x)