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A rock is thrown from the roof of a building with a velocity vo and an angle of alpha(o) from the horizontal. The building has hight h and you can ignore air resistance. Calculate the magnitude of the velocity of the rock just before it strikes the ground and show that this speed is independent of alpha(o).
Two lens system: The original object is 20 cm to the left of a lens with a focal length of +10 cm, Find the location and magnification of the final image. Be sure to show or tell me from where you are measuring this final location
A sled is being pulled across a horizontal patch of snow. Friction is negligible. By what percentage would the sled's kinetic energy have increased
A heat pump has a coefficient of performance equal to 4.35 and requires a power of 1.77 kW to operate. How much energy does the heat pump add to a home in one hour
A container of volume V is divided by partitions into three parts containing one kilomole of helium gas, Calculate the kilomole fraction
A heat engine does 376.88 J of work per cycle while exhausting 648.92 J of heat to the cold reservior. what is the cold reservior temperature in degrees Celsius
One of the 57.5cm -long strings of an ordinary guitar is tuned to produce the note B3(frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string
A 30.0 cm long string is fixed at both ends. If standing waves are formed, what is the wavelength of the fundamental mode
Water flows through a Venturi meter with a pipe diameter of 10.0 cm, The U-tube manometer is partially filled with mercury, Find the flow rate of the water in the pipe
At what height above the surface of the earth does the balloon have a speed of 7-m/s.
two flexible wires (massless) suspend a 10 cm-long conductor in the magnetic field with b = 4.2T. what is the current to let the wire just have zero tension
In a series LRC AC circuit, the resistance is 19 Ohm, the inductance is 21 mH, and the capacitance is 14 micro Farads. Calculate the max current in the circuit
q1. water at a temperature of 85f exhibits which of these physical propertiesa. has no definite shapeb. has no definite
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