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Since it is fall, the days are getting shorter so I started running indoors on an elliptical machine. It has a readout that states the number of RPMs of its internal flywheel and how many Watts I am generating while exercising. Typically I can put out an average of 350 W for 20 minutes while the flywheel rotates at 120 cycles per minute. Compute the torque generated by my legs while using the elliptical machine.
1. Calculate the torque applied by my efforts
2. Calculate the total work done through a 20 minute workout
A ball with a radius of 15 cm rolls on a surface and thetranslational speed of the center mass is 0.25 m/s. What is the angular speed about the center mass if the ball is notslipping
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H of 33.0 m above sea level, To what height above sea level does the rock rise
An air-track glider attached to a spring oscillates between the 11.4 cm mark and the 57.27 cm mark on the track. What is the maximum speed of the glider in cm/s
A golf ball of mass 0.050 Kg is hit off the tee at a speed of 35 m/s. The golf club was in contact with the ball for. Find the average force exerted on the ball by the golf club
Density is the ratio of an object;s mass to its volume. Would you except density to be a vector or a sdcalar quanity? Explain.
A long straight wire suspended in the air carries a current of 8.2 A in the -x direction. The wire runs along the x-axis such that it goes through the origin. find the magnitude of the magnetic force on the electron
A small fan pulls the air in and forces it through the resistorswhere it is heated. If the density of the air is 1.2 kg/m3 at theinlet and 1.05 kg/m3 at the exit, determine the percent increase inthe velocity of the air as it flows through the dry..
The position of an electron is given by r = (3.0) t i + (-4.0) t2 j+ (4.0) k. What is v(t) for the electron? What is its distance from the origin at t = 2.2 s
q1. a 59-g ice cube at 0degc is heated until 52 g has become water at 100degc and 7.0 g has become steam at 100degc.
A helium-neon laser (λ = 632.8 nm) is used to calibrate a diffraction grating. find the spacing between adjacent grooves in the grating
In a single-slit diffraction experiment, a beam of monochromatic light of wavelength 630 nm is incident on a slit of width 0.400 mm. If the distance between the slit and the screen is 1.80 m, what are the positions of the first dark fringes?
A certain fluid has a density of 1040 kg/m3 and is observed to rise to a height of 2.4 cm in a 1.0-mm-diameter tube. Calculate the surface tension of the fluid
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