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1. The distance between two telephone pole is 50m. When a 1kg bird lands on the telephone wire midway between the poles the wire sags 0.2m. Draw the free body diagram of the Bird. How much tension does the bird produce in the wire.
2. A hocky puck struck by a hocky stick in given an initial speed of 20m/s on a frozen pond. The puck remains on the ice and slides 1.2x102m slowing down until it comes to rest. Determine the coefficient of kinetic friction between the puck and the ice.
A delivery truck travels 30 blocks north, 20 blocks east, and 24 blocks south. Suppose the blocks are similar length. Find the magnitude of its final displacement from origin
Heat and physical activity. In a bench press, a weight lifter lifts 132kg 41cm. In so doing, the athlete expends 1.2kJ. What's the heat flow involved in this process
A drinking fountain projects water at an initial angle of 50 degrees above horizontal Water reaches maximum height of 0.150m above point of exit. Calculate gauge pressure in feeder pipe at this point
A circular loop of wire is rotated at constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what should be the orientation of the loop's axis of rotation if the induced em..
It takes 1.4×106J of heat to bring a quantity of water from 14 ? C to a boil. What is the mass of the Water
What is the required average power.
Astronauts walking on the Moon are seen "bounding" rather than walking normally. Why?
In a lightning bolt, a large amount of charge flows during a time of 1.6 x 10-3 s, How much charged has flowed during the lightning bolt
Calculate the net charge on a substance consisting of a combination of 2.7×10e13 protons and 3.7×10e13 electrons. The elemental charge is 1.6 × 10e19 C
A 9.0-g piece of Styrofoam carries a net charge of -.65mC, What is the charge per unit area on the plastic sheet
An object is located 17.2 cm in front of a convex mirror, the image being 6.78 cm behind the mirror. How far in front of the mirror is the second object located
A block (mass = 2.4 kg) is hanging from a massless cord that is wrapped around a pulley, Find the angular acceleration of the pulley and the tension in the cord
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