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Q1. On the Wheel of Fortune game show, a solid wheel (of radius 6.7 m and mass 10 kg) is given an initial counter clockwise angular velocity of +1.26 rad/s. It after that smoothly slows down and stops after rotating through 3/4 of a turn.
Find out the frictional torque that acts to stop the wheel.
Q2. A 140 g block hangs from a spring with spring constant 8.0 N/m. At t=0 s the block is 16 cm below the equilibrium point and moving upward with a speed of 89 cm/s. What is the block's oscillation frequency? What is the block's distance from equilibrium as the speed are 36 cm/s? What is block's position at t=1.0 s?
Relative to the ground, a car has a velocity of 16.8 m/s, directed due north, What is the magnitude of the truck's velocity relative to the ground
Calculate the Q value in MeV for the double Beta decay of 128Te (atomic mass 127.904461 a.m.u.) to 128Xe (atomic mass 127.903531 a.m.u.).
Though sunlight varies with season and time of day, solar energy falls on United States at an average intensity of 200. Assuming you live in an average location, what total solar-cell area would you need to provide all of your energy needs with en..
A horse is capable of moving at four different speeds: walk (1.9 m/s), trot (5.0 m/s), canter (7.0 m/s), and gallop (12 m/s). An is learning how to ride a horse, what was her average velocity over the trip
An airplane must reach a speed of 186mi/h to take off. If the runway is 488m long, what is the minimum value of acceleration that will allow the airplane to take off successfully.
When both cars increase their speed by 7.0m/s , they then have the same kinetic energy. What were the original speeds of the two cars
A spherical balloon is partially blown up and its surface area is measured. More air is then added, increasing the volume of the balloon. If the surface area of the balloon expands by a factor of 6.7 during this procedure, by what factor does the ..
Determine the force (in N) of the car on truck all through the impact. Call this force positive if it points to the east, and negative if it points to the west.
Two charged pith balls are suspended on very light 10.7 cm strings. Each has a mass 11.0 g. In stability, the total angle between the strings is 37 degrees. Draw the free body diagram for one of the pith balls and clearly label all forces with magnit..
Light is reflected from a glass coffee table. When the angle of incidence is 50.0°, What is the index of refraction of the glass
An Ar+ laser emits radiation at a wavelength of 515 nm, and a power of 7 W. Determine how many argon ions
You are on a swing with a chain 5.19 m long. If your maximum displacement from the vertical is 18.1°, how fast will you be moving at the bottom of the arc
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