2 ways to change frictional force between 2 objects

Which lunar phase preceded the full Moon phase?

An electron with a charge of - 1.6 * 10^-19 coulombs experiences a field of 1.4 * 10^5 newtons/coulomb. What is the magnitude of the electric force on this electron due to this field? A. 1.6 * 10^-3 newtons B. 1.4 * 10^24 newtons C. 2.

If the final position vector of a moving object has a smaller magnitude than the initial position vector, then the change in the object's position vector has a positive magnitude.

A satellite orbits at a distance from the Earth's center of about 2.60 Earth radii and takes 5.89 hours to go around once. What distance (in meters) does the satellite travel in one day?

Consider a bicycle that has wheels with a circumference of 2 m. Solve for the linear speed of the bicycle when it's wheels rotate at 1 revolution per second

What is the current in a 160V circuit if the resistance is 2Ω?

A thermometer is placed in water in order to measure the water's temperature. What would cause the liquid in the thermometer to drop? A. The molecules in the water spread apart. B. The molecules in the thermometer's liquid spread apart. C.

The amount of energy carried by a wave is proportional to the square of the wave's A. frequency B. amplitude C. wavelength D. period ... ?

The pressure at the bottom of a jug filled with water does not depend on

at what other angle will a thrown ball go the same distance as one thrown at an angle of 75 degrees?