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Responding to an alarm, an 88.4 kg fireman slides down a pole to the ground floor, 4.60 m below. The fireman startsat rest and lands with a speed of 5.74 m/s. What is the magnitude of the force exerted by the pole on the fireman?Ignore air resistance.
A cardinal (Richmondena cardinalis) of mass 3.60×10-2 kg and a baseball of mass 0.140 kg have the same kinetic energy. What is the ratio of cardinal's magnitude p_c of momentum to the magnitude p_b of the baseball's momentum.
A paperweight is made of a solid glass hemisphere with index of refraction 1.50. The radius of the circular cross section is 4 cm. The hemisphere is placed on its flat surface, with the centre directly over the 2.5 mm long line drawn on a sheet of ..
In a thin film experiment, a wedge of air is used between two glass plates. how much thicker is the air wedge at the 16th dark fringe than it is the 6th
A 200-g block is dropped onto a vertical spring with spring constant k =220.0 N/m.what work is done on the block by its weight
A rectangular trough, 1.9m long, 0.50m wide, and 0.30m deep, is completely full of water. at what speed does water emerge from the hole
A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed. What is the minimum velocity so the string will not go slack as the ball moves around the circle
A charge of 1 uC accelerates through a potential difference of 200V. What is the change in the electric potential of the charge
An athlete executing a long jump leaves the ground at a 20° angle and travels 6.30 m. how much longer would the jump be
q1. a pair of 12 rm mu f capacitors in a high-power laser are charged to 1.5 rm kv.what charge is stored in each
An underwater diver sees the sun 58{rm ^circ} above horizontal. How high is the sun above the horizon to a fisherman in the boat above the diver.
What is the resulting compressional force on Earth. Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase.
Differentiate between the following three types of plain carbon steels.
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