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A bobsled has a frontal area of 0.87 m2 and a coefficient of drag of 0.23. The air density is 1.047 kg/m3. Total mass of the sled and the bobsled driver and pushers is 834 kilogram. Friction between the runners and the ice is negligible. The track slopes down at an angle of 0.077 radians. Determine what will be the terminal speed (m/s)?
A mouse of mass m jumps on the outside edge of a freely turning ceiling fan of rotational inertia I and radius R. By what ratio does the angular velocity change
A grandfather clock is controlled by a swinging brass pendulum thatis 1.0 m long at a temperature of30.°C. What is the length of the pendulum rod when the temperature drops to 0.0°C
A hawk is flying north at 2.0 m/s with respect to the ground; 10.0 s later, it is flying south at 5.0 m/s. What is its average acceleration through this time interval?
A garden hose by 440 g of mass per meter of length is lying on the ground. You pull on the hose, producing 12N of tension, and then shake it from side to side to make waves. At what average rate should you do work if you displace the hose 25 cm eithe..
Heat flows into an ideal gas at a constant volume. The pressure increases from 1.5 atm to 5.5 atm. What is the total change in internal energy
You are trying to slide a refrigerator across a horizontal floor. The mass of the refrigerator is 188kg, and you require to exert a force of 347N to make it just begin to move. What is the coefficient of static friction between floor and refrigera..
a cat rides a merry-go-round while turning with uniform circular motion. at time t1 2.00 s the cats velocity is v1
A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. What is the amplitude of each wave
Make a drawing of a metal rod that has length 12cm and a total mass of 70g including two metal loops at both ends, which go around two metal poles. find the magnitude of the magnetic field in the region of the rod
a 0.120-kg block is suspended from a spring. when a small pebble of mass 30 g is placed on the block the spring
A 0.45 kg object connected to a light spring with a force constant of 19.6 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
A 40 cm length of wire has a mass of6.0 g. It is stretched between two fixed supports and is under atension of 185 N. What is the fundamental frequency of this wire
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