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Here is the problem which I am struggling on, please help me!
Problem: If the diameter of the hole is 9.00cm at 20 degree C and the temperature of the oven is 200 degree C, what will be the new area of the hole?
If possible just a brief explanation how you got the answer?
An electric field of 7.90 x10^5 V/m is desired between two parallel plates, each of area 41 cm2 and separated by 2.45 mm of air. What charge should be on each plate.
A bucket of water is whirled in a vertical circle of radius 90cm,What is the least speed that will keep the water from falling out.
A conductor suspended by two flexible wires as shown below has a mass per unit length of 0.040 0 kg/m. What current must exist in the conductor in order for the tension in thesupporting wires to be zero when the magnetic field is 3.60 T into the p..
q1. a 240 g block hangs from a spring with spring constant 8.0cm. at the block is 23cm below the equilibrium point and
question if a force of 10 n is needed to open an 100 cm wide door when applied at the edge opposite the hinges what
Simple Pendulum with length 1m released from rest from angle of 20 degrees from the vertical and to the left of the equilibrium position. What is the maximum angle (measured from the vertical) of the string when the ball is on the right
The skipper of a boat wants to go straight across a river that is1.5 kilometer wide. Find the speed of the boat according to an observer on the shore
A bowling ball weighing 71.2 is attached to the ceiling by a 3.50 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, speed of the bowling ball is measured a..
An 85-kg jogger is heading due east at a speed of 1.9 m/s. A 55-kg jogger is heading 24° north of east at a speed of 3.8 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.
A roller coaster car crosses the top of a circular loop-the-loop at twice the critical speed. Find the ratio of the car apparent weight to its true weight
The work function of a particular substance is 4.53 × 10-19 Joule. Find the photoelectric cutoff wavelength for this material
An engine with reservoir temperatures of 387 K and 725 K operates at half the efficiency of a Carnot engine. obtain how much net work does the engine do in a cycle
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