The density of water is the greatest at a temperature of

a. 0 K.

b. 4 K.

c. 273 K.

d. 277 K.

A crane lift a cargo 10 m off the ground. If the the crane lifts the cargo box twice as high the potential energy will increase by

Read the given list of organisms. squirrel, zebra, tortoise, rabbit, horse What best describes the role of these five organisms in a food web?

What is the force exerted on a moving charge of - 2.0 μC at a 20° angle through a magnetic field of 3.0 * 10-4 T with a velocity of 5.0 * 106 m/s? 3.0 * 10-3 N 1.0 * 10-3 N 1.0 * 103 N

A 100-g toy car moves along a curved frictionless track. At first, the car runs along a flat horizontal segment with an initial velocity of 2.66 m/s. The car then runs up the frictionless slope, gaining 0.

A certain part of a computer chip has a length of 1.5 micrometers. How many meters is this?

Luke and Carrie are driving down a straight section of the interstate at 70 mph in Luke's new convertible. Carrie is drinking a soda in the passenger seat.

A force produces power p by doing work w in a time t. what power will be produced by a force that does six times as much work in half as much time?

A batter hits a baseball with a bat. The bat exerts a force on the ball. Does the ball exert a force on the bat?

In a nuclear power plant, the temperature of the water in the reactor is above 100°C because of what?

Determine the total mechanical energy of a 250 g baseball if it has a velocity of 30 m/s when it leaves the pitcher's hand 1.2m above the ground.