A spar buoy is a cylindrical object that floats with its axis in the vertical direction. When it is disturbed a distance h from its equilibrium position, the magnitude of the restoring force is equal to ρghS, where ρ is the density of the water

1. Box 1 sits atop box 2, which is attached via a massless and frictionless pulley, and a very light rope, to box 3 (see the diagram). The friction between the table and box 2 is negligible but between box 1 and 2 the coeffi-cient

A plot of velocity as a function of time for a moving object is a straight line. which of the following could be true? a)the velocity is constant b)the acceleration os contant c)the acceleration and velocity are both zero d)all of the above

When a voltage difference is applied to a piece of metal wire, a 3-mA current flows through it. If this metal wire is now replaced with a silver wire having twice the diameter of the original wire, how much current will flow through the silver

a professor’s office door is 0.91 m wide, 2 m high, and 4 cm thick, has a mass of 25 kg, and pivots on frictionless hinges. A “door closer” is attached to the door and the top of the door frame. When the door is

A miniature spectrometer used for chemical analysis has a diffraction grating with 800 slits/mm set 20.0 mm in front of the detector “screen.” The detector can barely distinguish two bright lines that are 30 μm apart in the first-order spectrum.

A 2 kg. cart is pulled across a horizontal surface, if the horizontal pulling force on the cart is 12N when acceleration is 5m/s^ 2 what is the frictional force of the surface on the cart?

An open-top 20.0[m] tall cylindrical tank is filled with water as shown below. A small puncture on the side of the tank, is located just 15.0[m] above ground. The flow rate out of the tank is 1.00 [lt/min].

A piece of wood has dimensions (LxWxT): (0.600m)x(0.250m)x(0.080m). Its density is 700[kg/m3 ]. It is floating in water.

A 1.40 m cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a constant potential difference of 16.0 V across its ends, while an ammeter measures the current through it. You observe that at room temperature (20.0 ∘C) the ammeter