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Q. A hard drive reaches 5400rpm in 3.20 seconds. What was the average angular speed assuming constant angular acceleration?
Q. A daredevil is shot out of a cannon at 43 degrees to the horizontal with an initial seed of 25m/s. A net is positioned at a horizontal distance of of 50 m from the cannon from which it is shot. At what height above the cannon should the net be placed in order to catch the daredevil.
A box of mass 15 kg is dragged by a 50 N horizontal force a distance of 10 m over a rough surface with the coefficient of friction = 0.14 the work done by friction force.
A diver 40 m deep in 10 degree Celcius fresh water exhales a 0.50-cm-diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 degrees Celcius? Assume that the air bubble is always in..
What portion of jet power lost to producing sound Powdered steel is placed in a container
Vector A has a magnitude of 8 units and makes an angle of 45.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. (Using graphical methods), find (a) vector sum A + B and (b) vector diffe..
Compute the position, velocity vector and the distance attained by athlete in a long jump event.
find the final temperature when 1000 g of water at 20 celcius in a 125 g copper calorimeter is mixed with 50g of steam originally at 153 celcius.
How much current does an immersion heater draw from the car
A motorist travelling at 17m/s encounters a deer in the road 49m ahead. If the maximum acceleration the vehicle's brakes are capable of is -7 m/s2. If his or her reaction time is 1.9987 s, how fast will (s) he be travelling when (s) he reaches dee..
Points A and B have electric potentials of 243 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KA. When the electron is released from rest at point B, however, its kinetic energy when..
Old MacDonald had a farm, and on that farm he had a gate (see below). The gate is 3m wide and 1.8m high, with hinges attached to the top and bottom. The guy wire makes an angle of 300 with the top of the gate and is tightened by a turn buckle to a..
If a freight train can accelerate at 0.050 m/sec2, how far must it travel to increase its speed fro 2.0 to 8.0 m/sec?
An ocean liner leaves New York City and travels 12.0° north of east for 111 km. How far east and how far north has it gone? In other words, what are magnitudes of the components of the ship's displacement vector in the directions.
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