A bus travels 30km in 1/2h. What is it's average speed in km/h

A 6.0-kg box slides down an inclined plane that makes an angle of 39o with the horizontal. If the coefficient of kinetic friction is 0.40, at what rate does the box accelerate down the slope?3.1m/s23.4m/s23.7m/s24.1m/s2

4. A metal fork has a density of 7.8 g/cm ³. Is this fork made up of aluminum? 5. A glass marble has a volume of 5cm ³ and a mass of 13 g. What is the density of the marble

Is the earth's gravitational force on the sun larger than, smaller than, or equal to the sun's gravitational force on the earth?

K-2/5=11k literal equations

31) The basic concept of how a simple motor works is explained by which statement? A) When a fan blows on a wire, it causes it to spin creating a force. B) When a fan blows on a wire, it causes it to spin, creating an electrical current.

During a demonstration of the gravitational force on falling objects to her class, Sarah drops an 11 lb. bowling ball from the top of the science building. Determine distance the ball has traveled after falling for 1.

A teacher wants to demonstrate that unheated water can boil at room temperature in a beaker within a bell jar connected to a vac-uum pump. However, the vacuum pump is faulty and can reduce pressures only to 15 kPa.

How many btus of heat energy are needed to raise the temperature of 99.6 lbs of water from 50 °f to 130 °f?

What is a different form of a characteristic, such as brown hair, is called

A book falls of the table and hits the floor. Is work done? Why?