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A block of mass M is lifted at constant velocity, via an arrangement of pulleys as shown. Determine the pulling force F. Ignore the mass of the pulleys.
A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. What is the length of the rotating string
According to the shop manual, when drilling a 12.8-mm-diameter hole in wood, plastic, or aluminum, a drill should have a speed of 1400 rev/min. For a 12.8-mm-diameter drill bit turning at a constant 1400 rev/min , find the maximum linear speed of a..
A person gives a box a shove so that it slides up a ramp, then reverses its motion and slides down. what is the direction of the force of friction
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.67 m above the bottom of the chute and with an initial speed of 1.97 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding a..
An object, 0.75 cm tall, is placed 12.0 cm to the left of adiverging lens (f = -.8.00cm). A converging lens is placed 8.00 cmto the right of the diverging lens. The final image is virtual andis 29.0 cm to the left of the fiverging lens.
A boat capable of making 6.0 km/h in still water is utilized to cross a river flowing at speed of 4.0 km/h. The boat is directed (from the perpendicular to the shore) in such a way that its resulting motion is straight across the river.
A certain photon after being scattered from a free electron at rest moves at an angle of 120° with respect to the incident direction. what is the wavelength of the scattered photon
a 1200 kg automobile moving at 25 ms has it brakes applied with a deceleration of 8.0 ms2. how far does the car travel
A Styrofoam box has a surface area of 0.74 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 27°C. If it takes 8.5 h for 5.0 kg of ice to melt in the container, determine the thermal cond..
A burglar alarm in a house emits sound at a fixed frequency of 3.1 kHz. On a windy day a person cycles past the house while the alarm is sounding. What frequency does the cyclist hear
Explain how it might be possible to confuse the redshifts from recession velocities with the gravitational redshifts. How can we distinguish the two?
The springs of a 1300 {rm kg} car compress 6.0 {rm mm} when its 62 {rm kg} driver gets into the driver's seat. If the car goes over a bump, what would be the frequency of vibrations.
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