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Q1. A 32 percent efficient electric power plant produces 900 MJ of electric energy per second and discharges waste heat into 200C ocean water. Suppose the waste heat could be used to heat homes during the winter instead of being discharged into the ocean. A typical American house requires an average 20 kW for heat in g. How numerous homes could be heated with the waste heat of this one power plant?
Q2. A curve of radius 56 m is banked so that a car of mass 1.8 Mg travelling with uniform speed 51 km/hr can round the curve without relying on friction to keep it from slipping on the surface. At what angle is the curve banked? The acceleration due to gravity is 9.8 m/s2.Answer in units of.
Q3. A 25-cm-long wire with a linear density of 25 passes across the open end of an 83-cm-long open-closed tube of air. If the wire that is fixed at both ends vibrates at its fundamental frequency, sound wave it generates excites the second vibration mode of the tube of air.
What is the angle. The velocity of a particle moving in the xy plane is given by = (5.5t - 4.5t2)i + 8.3j
The earth spins in the same sense as it orbits around the sun. find the earth's spin angular velocity about its internal axis
Calculate the hydrostatic difference in blood pressure between the brain and the foot in a person of height 1.58 m
A uniform disc of mass m and radius R is rigidly mounted coaxially with a lightweight disc of radius r = R/2, to a horizontal shaft, on which combination is free to rotate frictionless. Light strings are wound in opposite directions about the cyli..
A drinking fountain projects water at an initial angle of 50 degrees above horizontal Water reaches maximum height of 0.150m above point of exit. Calculate gauge pressure in feeder pipe at this point
Find the capacitance of a parallel plate capacitor that has two square plates both having a side length of 6 cm, where these plates are seperated by 15 mm
A granite ball of radius 2.00m and emissivity of 0.450 is heated to 135 C whereas the ambient temperature is 25 C. What is the net power radiated from the ball
The pressure inside a gas bottle at 23.4 °C is 4350 kPa. What will be the pressure inside the bottle
During a severe storm in Palm Beach, Fla., on January 2, 1999, 33 inches of rain fell in a period of nine hours. estimate the average upward force exerted by one square meter of ground to stop the falling raindrops during the storm
Find the distance from the positive plate
what rate must air be moving through the open window in order to keep the system in equilibrium.
Calculate the rotational inertia of a meter stick, with mass 0.83 kg, about an axis perpendicular to the stick and located at the 44 cm mark
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