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A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.859 m and 2.85 kg, respectively. When the propellor rotates at 567 rpm (revolutions per minute), what is its rotational kinetic energy?
A radar station locates a sinking ship at range 18.1 km and bearing 136° clockwise from north. How far apart are the plane and ship
A 0.2kg aluminum plate, initially at 20C, slides down at a 15.00 m long surface, incline at a 30 degree angle to the horizontal. The force of kinetic friction exactly balances the component of gravity down the plane so that the plane.
A car (m1 = 900) moving south with a speed v1 = 25 collides with a truck (m2 = 1500) moving at an angle of 30 degrees south of west with a speed v2= 20. What is the magnitude and direction of their final velocity
At each point on the surface of the cube shown in Fig. 23-27, the electric field is parallel to the z axis. The length of each edge of the cube is 3.2 m. On the top face of the cube the electric field is in the negative z direction and has a magni..
A research-level Van de Graaff generator has a 1.9-m-diameter metal sphere with a charge of 4.9 mC on it, What is the potential near its surface in MV
A 100g of mass on a spring undergoes Simple Harmonic Motion with amplitude of 25 cm. What is the maximum acceleration of the object
A 28 Vpp square wave (50% of the time at +28 volts and 50% of the time at 0 volts) is connected to a 4 ohm speaker. Calculate the average power delivered to the speaker
a cylinder contains 4.0moles of a monoatomic gas at an initial temp of 27deg C. How much heat flows in to our out of the gas
The crankshaft in a race car goes from rest to 3480 rpm in 2.7s. What is the crankshaft's angular acceleration
David is running at a constant speed of 6.0 meters per second when he passes Cindy, who is at rest. How long will it take for Ciny to catch up to David
A 2.10 x 10^3 kg car starts from rest at the top of a 4.70 m long driveway that is inclined at 25° with the horizontal. If an average friction force of 4.0 x10^3 N impedes motion, find out the speed of the car at the bottom of the driveway.
A Tritium (3 1 H) nucleus with kinetic energy of 4.70 MeV is incident on a stationary target of phosphorus (30 15 P); Find the nuclear binding energy of the nucleus 32 16 S
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