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A small crack occurs at the base of a 13.5 m high dam. The effective crack area through which water leaves is 1.55 10-3 m2.
(a) Ignoring viscous losses, what is the speed of water flowing through the crack?
Car is traveling at constantspped, passes a car stopped, it accelerates at 7m/s2 , what is final velocity of originally stopped car
a 180 kg horizontal beam is supported at each end. a 295 kg piano rests a quarter of the way from one end. what is the
Using a 677-nm wavelength laser, you form the diffraction pattern of a 0.111-mm wide slit on a screen. How far is the screen located from the slit
A 14-g bullet is fired horizontally into a 110-g wooden block that is originally at rest on a frictionless horizontal surface and connected to a spring having spring constant 169 N/m. The bullet becomes embedded in the block. The bullet-block system ..
Abody weight W is attached by a string of length L, to a hook on a vertical wall. A horizontal force F acting on the body holds it at a distance D from the wall. Derive the equation, which give the F in terms of W, L and D
A solenoid with 1000 turns has a cross-sectional area of 7.0cm2 and a length of 25cm. how much energy is stored in the magnetic field of the solenoid
if the mass of the diver is 134kg and the board is 9m long, illustrate what is the torque due to gravity on the diving board with a pivot point at the fixed end of the board?
A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. Calculate the intensity of the light
A flower pot fell of a windowsill and falls past the window below. you may ignore air resistance. it takes the pot .470s to pass the window, which is 1.80m hight. how far is the top of window below the windowsill from w/c the flower pot fell.
A block of mass m = 8 kg is pushed across a rough table with a force applied at an angle of 40 with respect to the horizontal direction, what is the work done by friction
The rotor of an electric motor has rotational inertia Im = 7.59 x 10-3 kg·m2 about its central axis. The motor is used to change the orientation of the space probe in which it is mounted. The motor axis is mounted along the central axis of the probe;
A cylinder with a piston contains 0.130 mol of nitrogen at 1.80x10^5 Pa and 290 K. The nitrogen might be treated as an ideal gas. The gas is first compressed isobaric ally to half its original volume. It then expands adiabatically back to its origina..
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