How does the speed ratio change as you switch between different gears on a bicycle, and how does this affect the force you need to pedal the bicycle?

Scientist suggest that galaxies are moving away from Earth due to A. Dark energy B. Doppler shift C. Energy D. Solar energy

How many neutrons does element X have if it's atomic number is 21 and it's mass number is 75

What is the temperature of the center of the earth?

What moon phase are we in today?

Inductors in series. Two inductors L1 = 1.05 H and L2 = 2.07 H are connected in series and are separated by a large distance so that the magnetic field of one cannot affect the other. (a) Calculate the equivalent inductance.

What happens when light from a flashlight strikes Water droplets from a mist of water

What is the length of a box in which the minimum energy of an electron is 1.5*10^-18 J?

Describe how to calibrate a candy thermometer

A water drops falls from the roof of a house during 3s, how high is the house?

A cannon fired horizontally at 20 m/s from the top of a cliff lands 80m away. how tall is the cliff