Which is the following is made up mostly of water

a) rocks

b) soil

c) shells

d) plants

e) the sun

Which of the following is an example of a compound machine Bicycle, Wedge, Lever, or pulley

Which is a longitudinal wave that requires a medium to move

The distance from the sun to the Earth is 1.5 x 1011 m. How long does it take for light from the sun to reach the earth? Give your answer in seconds

A 5 kgkg sphere having a charge of + + 8 μCμC is placed on a scale, which measures its weight in newtons. A second sphere having a charge of - - 3 μCμC is positioned directly above the first sphere. The distance between the two spheres is 0.3 mm.

The triceps muscle in the back of the upper arm is primarily used to extend the forearm. Suppose this muscle in a professional boxer exerts a force of 1.8 * 103 N with an effective perpendicular lever arm of 2.

At distances greater than 2 femtometers, the nuclear strong force is stronger than (select all that apply): gravity electromagnetic forces nuclear weak force none of the above

Identifying the Functions of Parts of the Ear Which part of the ear changes sound to a signal that the brain can understand? Which part of the ear carries the signal to the brain?

Which tool would a scientist use to find the mass of an object?

Who are the launched dog on moon A. mark B. lyca C. mcmc D. seul

The excerpt is from an article that Roberto read for science class called "Using the Scientific Method to Study Tomatoes." The student performed an experiment to test his hypothesis about sunlight and plant height using two plants.