A 50kg box is pulled on by a rope. The rope applies a horizontal force of 180 N to the box. What is the normal force exerted on the box by the floor?

How many electrons flow through the hair dryer in 5.0 min?

In which step of the scientific method would a scientist make use of graphs

An object has a kinetic energy of 88 J and a mass of 45 kg, how fast is the object moving?

A rock has mass 1.80 kg. When the rock is suspended from the lower end of a string and totally immersed in water, the tension in the string is 12.8 N. What is the smallest density of a liquid in which the rock will float?

Divers change their body position in midair while rotating about their center of mass. In one dive, the diver leaves the board with her body nearly straight, then tucks into a somersault position.

Which physical quantities has the unit kg·m·s-1?

Can an object travel at the speed of light? Why or why not?

Determine the amount of potential energy of a 5 Newton's book that is moved to three different shelves on a bookcase. The height of the shelves is 1.0 meter, 1.5 meter, and 2.0 meter

Which atom is involved in giving your heart energy to beat? carbon gold oxygen iron

Which of the following is the most accurate statement concerning the properties of matter? a. they can be written as symbols b. they can be observed and measured c. they cannot be tested or verified d. they change with the amount of matter present