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1. Should a canoe paddle be made rough to get a "better grip on the water" for paddling purposes? Explain.
2. Two different fluids flow over two identical flat plates with the same laminar free-stream velocity. Both fluids have the same viscosity, but one is twice as dense as the other. What is the relationship between the drag forces for these two plates?
How much energy per second does each wave deliver to a square 5.00 mm on a side?
The time constant of a RC circuit is 5 sec. How long does it takefor the capacitor in this circuit to accumulate about 50% voltage of the total voltage? Assume the capacitor has zero volt at the beginning.
Two small stereo speakers are 3 m apart and act as a double slit interference experiment with sound waves. If the opposite wall of the room is 5.5 m away and the sound frequency is 4 kHz, what is the distance between the two interference maxima ne..
A student suspends two identical conductive spheres (m = 0.30g) from two equally long nylon threads each 25 cm long. What is the charge on each sphere
A 2500kg pickup truck is climbing at a constant speed of 18m/s up a road inclined at 10 degrees. The truck is subject to a total drag force of 900N.
A person applies a constant horizontal force of 85.0 N to a block of ice on a smooth horizontal floor. Neglect friction. The block starts from rest and moves 11.5 m in 4.50 s. What is the mass of the block of ice?
Consider a heat engine that operates between thermal reservoirs at 510 K and 242 K. Suppose the engine does 4900 J of work while it expels 103 J of energy to the cold reservoir. Is this engine possible in the real world? Hint: Violations of the secon..
Two blocks are connected by a wire that has a mass per unit length of 8.50 x 10-4 kg/m. Find what is the magnitude of horizontal force
The inner edge of a race track is in the form of a rectangle with two semicircular ends on the shorter sides. The rectangle is 87.0 m wide and 132.0 m long. The race track is 5.50 m wide. What is the dissimilarity between the longest path around the ..
The top of a swimming pool is at ground level. If the pool is3.00 m deep, how far below ground leveldoes the bottom of the pool appear to be located for the following conditions? The pool is filled halfway with water
A 1000 kg rocket carrying 4000kg of fuel is travelling at 200 x m/s It burns and ejects 100kg of exhaust with a relative velocity of ?400x m/s , What is the final velocity of the rocket after this
Cyclotron's accelerate particles around a circular track during the use of electric and magnetic fields. The TRIUMF is one such cyclotron and is able to accelerate particles to a few percent the speed of light (We'll say 3%).
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