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A. A retired physics instructor is riding bulls at the rodeo to earn money. He is thrown upward at a forty degree angle. Assuming no air friction, at what points will the magnitude of his acceleration equal "g"?
B. A car is moving along a horizontal straight road. Is it possible for the forces acting on the car to sum to zero. Explain?
C. Why is it that the force of gravity does no work on your body as you sit in your chair?
The top of the hill is horizontal and 70 m higher than its base. What minimum speed must the block have at the base of the hill in order for it to pass over the pit at the far side of the hill
The oscillations of an actual spring-block system slowly reduce in amplitude and finally the system comes to a halt. What happens to the energy of the system
As you drive down the road at 18 m/s, you press on the gas pedal and speed up with a uniform acceleration of 1.17m/s2 for 0.65 second. find their angular displacement during this period of acceleration
A net force of 25 N is applied for 5.8 s to a 6-kg box initially at rest. What is the speed of the box
Two trains on separate tracks move toward one another. Train 1 has a speed of 100 km/h, train 2 a speed of 60.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? (Suppose the speed o..
A container is filled to the brim with 1.6 L of mercury at 20°C. Determine the linear expansion coefficient of the material
Under the assumption that the actual acceleration is constant determine the number of times that the wheel rotates in the interval from the initial time to the final time.
A sealed closed tube length=1.5 m of unknown gas, frequency = 210 Hz. what is the speed of sound in that gas
Photons of wavelength 58.0 pm are Compton-scattered from a free electron in an aluminum block, at 75.0o from the original direction. What energy (in electron volts) has been imparted to each electron
What phase difference between two otherwise identical harmonic waves, moving in the same direction along a stretched string
A dog pulls on a pillow with a force of 2.2 N at the angle of 40° above the horizontal. Find the x and y components of the force.
What is the maximum speed with which a 1350kg car can round a turn of radius 71m on a flat road if coefficient of static friction between tires and road is 0.40.
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