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A rope is wrapped around a wheel of radius R = 2.0 meters. The wheel is mounted with frictionless bearings on an axle during its center. A block of mass 14 kg is suspended from the end of the rope. When the system is released from rest it is observed that the block descends 10 meters in 2.0 seconds. What is the moment of inertia of the wheel?
In Fig. 29-43, point P2 is at perpendicular distance R = 21.4 cm from one end of straight wire of length L = 10.7 cm carrying current i = 0.949 A. (Note that the wire is not long.) What is the magnitude of the magnetic field at P2 (in T)?
A 50-g of ice cube at 0C is heated until 45g has become water at 100C and 5.0g has become steam at 100C. How much energy was needed to accomplish to transformation?
Two ideal gases have the same mass density and the same absolute pressure. One of the gases is helium (He), What is the temperature of the neon
Initially, the translational rms speed of a molecule of an ideal gas is 460 m/s. The pressure and volume of this gas are kept constant, find the final translational rms speed of the molecules
A catapult launches a rock at a 50° angle with respect to the horizontal. Find the maximum height attained if the speed of the rock at its highest point is 30.3 m/s
A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.2 m/s2 for20 seconds. It then proceeds at constant speed for 1100 m beforeslowing down at 2.2 m/s2 until it stops at the station.
assuming the diameter of a penny is 2.00 cm and its mass is 2.60g what is the minimum air speed needed to lift the
our little sister builds 2 tree houses and stretches a rope between them for sending messages to other tree house. She hangs a mass of 1.4kg on one end of the rope that passes over the pulley.
A mass ball is attached to the spring and allowed to come to rest. It is then pulled down y and released. Illustrate what is the time constant if the ball's amplitude has decreased to y1 after oscillations?
Two cesium-133 atomic clocks differ by one second in 6000 years. Assume one of the clocks gains one second in six thousand years, approximately what is the change in the number of oscillations of the light each second?
An ultracentrifuge is a rotating device that can produce acceleration up to 106 g. If the distance from the center of the centrifuge out to the end of the rotating arm (where the sample goes) is 20 cm, what is the rotation speed inrevolutions per m..
If the coil forms a closed circuit with a series resistance of 70.0 ?, what is the instantaneous power being dissipated in the resistor when the plane of the coil makes an angle of 39.0° with the magnetic field
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