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A man of mass 60kg walks along a horizontal road at a steady speed of 4.6 km h^-1 by taking strides of length 96cm. His centre of gravity rises (and falls) 9.0 cm at each step. Calculate his work rate.
Water at 2 kg/s is the working fluid in the power cycle shown below. Saturated liquid at 10 kPa enters the pump, What is the overall efficiency of the entire cycle
A grating with 504 lines/mm is illuminated with light of wavelength 305 nm. What is an angular separation between the two lines formed in order m = 2.
A coaxial cable used in a transmission line hasan inner radius of 0.25 mm and anouter radius of 0.65 mm. calculate the capacitance per meter for the cable
a cylindrical tank is 50 ft deep 39.5 ft in diameter and filled up to the top with water. a flashlight shines into the
At a temperature of 0° C, the mass and volume of a fluid are 798 kg and 1.25 m3. The coefficient of volume expansion is 1.25 10-3(° C)?1. What is the density of the fluid when the temperature has risen to 21.0° C
A 1.36 103-kg car traveling initially with a speed of 20.0 m/s in an easterly direction crashes into the rear end of a 9.00 103-kg truck moving in the same direction at 15.0 m/s. How much mechanical energy is lost in the collision
A 15.00 block is attached to a very light horizontal spring of force constant 450 and is resting on a smooth horizontal table. Suddenly it is struck by a 3 stone travelling horizontally at 8 to the right, whereupon the stone rebounds at 2.00 horizont..
When a carpenter shuts off his circular saw, the 10.0 inch diameter blade slows from 4550 rpm to zero in 3.00 second. Compute the distance traveled by a point on the rim of the blade during the deceleration
Two long, parallel wires carry 0.242 Amp in the similar direction. If the wires are 0.031 meter apart, Obtain the force per unit length between the wires
A pendulum of the length L is suspended from the ceiling of an elevator. When the elevator is at rest, the period of the pendulum is T. In instant when the pendulum reaches it's highest position the elevator starts the free fall. What is the period o..
A flagpole consists of a flexible, 2.89 m tall fiberglass pole planted in concrete. What is the lowest frequency standing wave that can be formed
A 200-N beam is held horizontally by a vertical steel cable at each end. The beam is 18 m long. A 650-N box sits 3.0 m from the left end. What is the tension in the right cable
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