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At a temperature of 24.60°C the hole in a steel plate has a diameter of 1.055 cm. If a steel rod with a diameter of 1.063 cm has to just slip through this hole, to what temperature should the plate be heated? The coefficient of area expansion of steel is 24 ? 10-6/°C.
A 53.0-kg crate rests on a level floor at a shipping dock. What horizontal pushing force is required to slide the crate across the dock at a constant speed
The heat of fusion for water is 80. cal/g. How various calories of heat are released when 20.0 g of water at 30. °C is cooled to 0 °C and frozen to ice at 0 °C
A 30 gram goldfinch lands on a slender branch, where it oscillates up and down with simple harmonic motion of amplitude 3.50 x 10-2 meter and period 1.50 second. Evaluate the maximum acceleration of finch
A sinusoidal wave is explained by the wave function y = 0.25 sin (0.30x 40t) where x and y are in meters and t is in seconds. Decide for this wave (a) the amplitude, (b) the angular frequency, (c) the angular wave number, (d) the wave speed, (e) the ..
a ball is tossed into the air at a speed of 64.0 m/s at an unknown angle. If the ball is observed to rise to a maximum height of 7.80 m, elucidate at what angle was the ball thrown relative to the ground?
a wrecking ball weight 4620 n is supported by a boom which may be assumed to be uniform and has a weight of 2510 n. as
The energy released by each fission within the core of a nuclear reactor is 2.00 x 102 MeV. Determine the power (in watts) that the reactor generates
An electric dipole with dipole moment p- is in a uniform external electric field E- . Find the orientations of the dipole for which the torque on the dipole is zero measured counterclockwise from the electric field direction.
A tube of radius 5cm is connected to tube of radius 1 cm as shown above. Water is forced through the tube at a rate of 10 liters/min. The pressure in the 5 cm tube is 1×10^5 Pa. The density of water is 1000kg/m3. Suppose that the water is no visco..
A uniform helicopter rotor blade is 7.40 meter long and has a mass of 110 kilogram, and is attached to the rotor axle by a single bolt. Find the magnitude of the force on the bolt from the axle when the rotor is turning at 320rev/min
A uniform meter stick has a mass of 0.150 kg. The stick is balanced on a knife edge at the 30.0-cm mark, What is the object mass
A 320 piano slides 3.4 down a 33 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure(Figure 1) ). The effective coefficient of kinetic friction is 0.40. Calculate the force exerted by th..
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