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An automobile moves on a level horizontal surface in a circle radius 30 m. The coefficient of friction between tires and road is .50. Find the maximum speed with which car can round the curve?
A capacitor is connected across an ac generator whose frequency is751 Hz and whose peak output voltage is 140 V. The rms current in the circuit is 3.0 A. What is the capacitance of the capacitor?
A water dispenser for pets has an inverted plastic bottle. When acertain amount of water is drunk from the bowl, more water flowsautomatically from the bottle into the bowl. The bowl neveroverflows. Explain the operation of the dispenser. Does the he..
A heat engine operating at a maximum efficiency of 28.0% does175 joules of work in each cycle. How much heat is absorbed by this engine per cycle?
A spring (k=600N/m) is placed in a vertical position with its lower end supported by a horizontal surface. The upper end is depressed 20 cm, and a 4.0-kg block is placed on top of the depressed spring. The system is released from rest. How far above ..
The mass of the Sikorksky UH-60A helicopter is 9300kg. It takes off vertically at t=0. How fast is the helicopter rising 3 seconds after it takes off
Find out the object position p for the image to be erect and 7 times the size of the object. Focal length is 46 cm.
When the power is turned off on a turntable spinning at 67.0 rpm, you find that it takes 13.0 revolutions for it to stop while slowing down at a uniform rate. What is the angular acceleration (in rad/s^2), of this turntable
coast guard pararescue jumpers are trained to leap from helicopters into the sea to save boaters in distress. the
What is the tangential acceleration of a bug on the rim of a10-inch diameter disk if the disk moves from rest to an angular speed of 99 rev/min in 3.0 s? When the bug in the previous problem is at his final speed of 99 rev/s , what is the tangential ..
Two forces act on a block of wood. The first force has a magnitude of 8.66 N in a direction 12.0 degrees counterclockwise from the positive x-axis, What is the magnitude of the resulting force
two point charges q and 2q lie on the x-axis . which regions on the x-axis include a point where the electric field due to the two point charges is zero?
A charge of 2.65mC is placed at each corner of a square 0.450m on a side, Determine the direction of the force on a charge
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