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A 200 Ib student sits on a 25 Ib chair. The radius of gyration of the student is 0.3 ft, and the chair's radius of gyration is 0.2ft. The student and chair are rotating at 10 rad/s. A 30 Ib backpack is thrown at the student, who reaches out 1.5 ft from their center line to grap the backpack. Now the system rotates at 15 rad/s. What was the initial linear speed of the backpack?
A 2.5 kg block of ice at a temperature of 0.0 C and an initial speed of 5.7 m/s slides across a leveled floor. If 3.3 x 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is entire..
A coil of wire with 80 turns and a cross-sectional area of .03m^2 lies perpendicular to a magnetic field of magnitude 1.5T. what is the average value of the voltage induced in the coil
Radiation can supplement the energy needs of a home's water heater, Find what volume of water can be heated per hour from a temperature of 16.0oC to a temperature 61.0oC
There are two coherent microwave sources in the x-y plane. These sources are emitting in phase at a wavelength of ? = 1.00 cm. where is the first source located on the y axis
Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding. In particular, Nate would often don a protective suit of Bounce-Tex, which he invented, and after working up a high speed on his skate..
A 10.0 g object moving to the right at 18.0 cm/s makes an elastic head-on collision with a 15.0 g object moving in the opposite direction at 27.0 cm/s
You own a rectangular property measured as 3.2 ± 0.1 ft by 125 ± 4 ft. Find the area of the property, with the expected uncertainty
A small droplet of oil with mass of 3.04×10-15 kg is held suspended in a region of uniform electric field directed upward with a magnitude of 5325 N/C
A neutral (uncharged) capacitor has a charge of -3.00C moved from one of the plates to the other in a time of 5.00 sec, What was the average current
A 0.500 kg length of copper wire is warmed 30.0°C by the passage of electrical current. How much heat was generated by the current flow
A stretched string fixed at each end has a mass of 49.0 g and a length of 8.60 m. The tension in the string is 49.0 N. What is the vibration frequency for this harmonic
A 15.0g bullet with a speed of v=235m/s is fired into a block of wood that is initially at rest on a frictionless surface. Determine the mass of the wooden block
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