Which of the following is an example of chemical energy converted into mechanical energy? a. a windmill blades spinning

b. riding a bicycle

c. plugging in a lamp and turning it on

d. building a campfire

the power rating of an electric lawn mower is 2200 watts. if the lawn mower was used for 30 mins, and 650 Newtons of force was used, how much distance was covered?

1. the coastlines of continents fitting together like puzzle pieces was one of the four pieces of evidence for continental drift. true or false? 2. why was wegners theory of continental drift not accepted by the scientific community? a.

At the bow of a ship on a stormy sea, a crewman conducts an experiment by standing on a bathroom scale. In calm waters, the scale reads 182lbs. During the storm, the crewman finds a max reading of 225lbs and a minimum reading of 138lbs A.

an 85 kg construction worker has 37,485 j of gravitational potential energy to the nearest whole number the worker is blank m above the ground. answer the blank = )

A gasoline engine transforms approximately 34 percent of the fuel's chemical energy into mechanical energy. If energy is conserved, what happens to the other 66 percent? A) Most is transformed into thermal energy.

Scientific theories have strod the test of time and will not change

An 8 kilogram bowling ball is rolling in a straight line toward you. if its momentum is 16 kg * m/s, how fast is it traveling?

Explain why a moving object can be in equilibrium

Design an investigation to compare the durability of the three different brands

The surface area of the skin of a person who is 70 inches tall and weighs w pounds can be estimated by s (w) equals=342 w superscript 0.425342w0.425 , where s is in square inches.