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An elevator at the CN Tower in Toronto, Canada, is able to lift 2200 kg (including the load and the car) to a height of 370 m in 55.0 s. What is the minimal power required for the motor of the elevator (Assuming no counterweight is used).
A double-slit experiment using light of wavelength 580.nm produces an interference pattern on a screen. The slit separation is 1.39?10?2mm. find the distance between the slits and the screen
Students in a fraternity house want to be able to spray water 25 m across their neighbor's yard onto a patio. What size nozzle do they need
The upward velocity of the 5 kg block is v1 = 3 m/s when it is at a height ht = 10 m from the sandy surface. Determine time to stop the motion of the block if the average impulsive force acting on the block
If the football has the mass of .420 kg and the time of contact with the ball is .014 s, what is the force exerted by the ball on a kicker's foot.
The position of a 250g object is given (in meters) by x=5.0t^3 -8.0t^2 -44t , where t is in seconds. Determine the net rate of work done on this object
Clifford is in a real hurry, however, and skips the speed ramp. Starting from rest with an acceleration of 0.49 m/s2, he covers the same distance as the ramp does, but in one-fourth the time. What is the speed at which belt of the ramp is moving.
A house is 30 ft long and 24 ft wide, and has 8 ft high ceilings. What is the volume of the interior of the house in cubic meters and cubic centimetres.
plan a picutre showing Mary's displacment due to rowing, her displacemnet due to the river's motion, and her net displacement.
You are given three capacitors, with capacitances 0.0075 µF, 12000 pF, and 0.029 µF, what is the maximum and the minimum voltage difference would they make when charged to 130 µC
The voltage across a membrane forming a cell wall is 74.0 mV and the membrane is 8.80 nm thick. What is the electric field strength
A small immersion heater is rated at 329 W. Compute approximately how long it would take to heat a cup of soup (suppose this is 250 mL of water) from 20°C to 50°C.
The temperature of 3.00 mol of an ideal diatomic gas is increased by 40 degrees C without a change in pressure, How much energy is transferred to the gas as heat
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