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Consider an object on an incline where friction is present. The angle between the incline and the horizontal is ? and the coefficient of kinetic friction is ?k.
Find an expression for the acceleration of this object. Treat down the incline as the positive direction.
If water at 15°C is flowing through a 3cm diameter pipe with a velocity of 50 cm-1, calculate the Reynolds number. Is the flow turbulent or laminar?
What is the induced EMF when the south pole end of magnet moves closer to the plane of the coil? When the magnet is stationary what happens to the induced voltage
What is the lift (in newtons) by reason of Bernoulli's principle on a wing of area 77 m^2 if the air passes over the top and bottom surfaces at speeds of 270 m/s and 140 m/s, correspondingly.
A 52.1-kg high-school student hangs from an overhead bar with both hands, What is the tension in each arm when the arms make an angle of 31.00 o with respect to the vertical
A roach that runs for its life because you try to hit it with your physics book runs off the horizontal tabletop with a speed of 0.685 m/s, What will be the vertical component of the roach's velocity just before it hits the floor
An electric power station is producing 1.60 × 103 W of power that is to be sent to a small town located 11 km away, Find the power lost in heating the wires if the voltage is stepped up from 130 V to 1400 V
As the drawing shows, the bullet puts a hole in a window of another building and hits the wall that faces the window. h is 0.54 m and d is 8.0 m. Assume that the bullet does not slow down as it passes through the window. Evaluate the Distance H
What are the d irections of electric field
A sled and rider with with a combined mass of 50kg are at the top of a hil a height of 14m above the level ground below, After the push, what is the total mechanical energy of the sled and rider at the top of the hill
Suppose a block with mass 2.30kg is resting on a ramp. If the coefficient of static friction between the block and the ramp is 0.420.
A thermos contains 165 cm3 of coffee at 85° C. To cool the coffee, you drop two 14-g ice cubes into the thermos. The ice cubes are at first at 0° C and melt completely. What is the final temperature of coffee? Treat the coffee as if it were water.
What is the greatest distance foot of the ladder can be placed from the base of the wall without the ladder immediately slipping.
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