Aparallel-plate capacitor is made from two aluminum-foil sheets, each 7.5 cm wide and 5.6 m long. between the sheets is a teflon strip of the same width and length that is 4.1×10^−2 mm thick. what is the capacitance of this capacitor? (the dielectric constant of teflon is 2.1.)

An automobile of mass 2000 kg moving at 30 m/s is braked suddenly with a constant braking force of 10000 n. how far does the car travel before stopping?

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

Aforce of 8,480 n is applied to a cart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?