Friction force equation

Which of the following statements about a metal wire in equilibrium are true? Select all that apply. There cannot be excess charges on the surface of the wire. There may be excess charges in the interior of the wire.

If the mass of an object i if the mass of an object is 44 kg in its velocity is 10 m/s East how much kinetic energy

A soccer ball is kicked to a 30-m/s speed. while being kicked, the amount of force of the player's foot on the ball is

Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. The piston is frictionless and has a negligible mass. The area of the piston is 3.02 10-2 m2, and the pressure outside the cylinder is 1.

If you fill a car's gas tank, and then drive a couple of hundred miles or so, the car's gas gauge will tell you the tank is nearly empty. You know that energy cannot be created, destroyed or "used up.

Ganymede is one of the many moons of jupiter. it is nearly a sperical in shape. it is larger than the planet mercury and slightly smaller than the planet mars.

Which of the following statements about two carts rolling on a track and experiencing a completely inelastic collision is TRUE? a. The kinetic energy of the system is conserved to good approximation. b.

If element X has 17 protons, how many electrons does it have?

A 2.0-kilogram laboratory cart is sliding across a horizontal frictionless surface at a constant velocity of 4.0 meters per second east. What will be the cart's velocity after a 6.0-newton westward force acts on it for 2.

A boat floats with 25% of its volume under water. a. What is the boatâs density? b. If the boat was made from 500 kg of metal, what is the volume of the boat? (Assume the air in the boat has negligible mass and density) c.