How does a fixed pulley act as a machine?

What is the deflection of a spring? A ball of mass 2kg is dropped from a height if 20cm on a spring of stiffness k=1225 N/m. Find the maximum deflection of the spring.

Submarine A and submarine B are heading towards each other. They are both moving at a Steady speed of 5mls. Submarine A produces a pulse of sound to detect submarine B.

A vehicle in for repair has a burst upper radiator tank. Technician A says thermostat that was stuck in the open position could be the cause. Technician B says that a faulty radiator pressure cap could be the cause. Who is correct?

What is aerodynamics

Can someone explain to me what Murphy's law is and how it works?

Suppose your car is equipped with tire pressure monitoring system (TPMS) and the tire pressure is 34.0 psi on a 98F day in california. You decided to take a road trp to Alaska where the temperature drops to 20 F.

Which sound would be loudest? O A. a wave with an amplitude of 1.0 OB. a wave with an amplitude of 0.1 OC. a wave with an amplitude of 0.5 OD. a wave with an amplitude of O

How much work is done when a 4.0-newton box is carried horizontally a distance of 2.0 meters at a constant velocity?

You push a shopping cart filled with groceries (total mass = 20 kg) by applying a force to the cart 30° from the horizontal. If the force you apply has a magnitude of 86 N, what is the cart's acceleration? Assume negligible friction.

Does water expand more as the temperature drops even more below 0 deg? I am worried about the coolant in my rad. as the temp. is 40deg below.