What is always included in a comparative investigation?

O a dependent variable

O an independent variable

O a hypothesis

O a scientific question

A rock from Mars experiences a 263% increase in its weight once it arrives on Earth. What accounts for this increase in weight?

a footballer took a penalty kick and ball moved with a velocity of 4mls, calculate the work done by the footballer if the mass of the ball was 40g

A satellite makes 16 orbits around the earth in one day. What is the period of it orbit?

A car is going 3 m/s, then it speeds up for 4 seconds. If it has an acceleration of 5m/s^2, find its final velocity. Which equation can you use? A Δx = vi*t + (½) at^2 B vf = vi + a*t C Δx = (½) (vf + vi) * t D vf^2 = vi^2 + 2aΔX

Which is an acid? A. CO is a gas at room temperature and has no odor. B. HCl has a sour taste and gives off protons in water. C. KOH has a bitter taste and accepts hydrogen ions.

The difference between the third and fourth ionization energies of scandium is much larger than the difference between the third and fourth ionization energies of titanium. why?

One of the longer sides of a kite is 39 feet. one of the shorter sides is 25 feet. half the length of the shorter diagonal is 15 feet. what is the area of the kite?

The radius of the merry-go-round is 10 meters. The Chile has a mass of 40 kilograms. What is the child's moment of inertia

Of the waves listed, the one with the longest wavelength is a (n) a. X ray. b. radio wave. c. microwave. d. visible light wave.

What does it mean to dissolve something