What are the two ways to change the frictional force between two solid surfaces

What is the coefficient of static friction if it takes 34n of force to movea box that weighs 67n?

a wheel of mass 38kg is lifted to a height of 0.8m. how much gravitional potential energy is added to the wheel? accélération due to gravity is g=9.8m/s

Radio waves are waves. O longitudinal O transverse O mechanical

Two electrodes, separated by a distance d, in a vacuum are maintained at a constant potential difference. An electron, accelerated from one electrode to the other, gains kinetic energy Ek. The distance between the electrodes is now changed to d.

Which statement about human behavior would john B. Watson support

How many day does it take the sun to came out?

Using the word "more" to mean "I want another cookie" is an example of a (n) :

Ohm's law is I = V : R. What is the current of a circuit with a 3.0-volt battery and 1.0 ohm of resistance? The current of a circuit with a 3.0-volt battery and 1.0 ohm of resistance is (blank) amps.

Why do marine west coast climates have much precipitation

Wright true or false: 1. A baseball has more momentum than a tennis ball traveling at the same speed. 2. A light ball has more inertia than a heavy ball 3. The less momentum a bowling ball has, the easier it is for that ball to knock down pins. 4.