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A person is making homemade ice cream. She exerts a force ofmagnitude 22 N on the free end of thecrank handle, and this end moves in a circular path of radius0.28 m. The force is always appliedparallel to the motion of the handle. If the handle is turned onceevery 1.3 s, what is the average power being expended?
A uniform magnetic field points north; its magnitude is 4.5 T. A proton with kinetic energy 7.1 10-13 J is moving vertically downward in this field. What is the magnetic force acting on it
q1. a power supply passing through a resistor is supposed to deliver 22-v dc at a max current of 150ma. the
The radius of curvature of a loop-the-loop for a roller coaster is 11.8 m. Find the speed of the roller coaster at the top of the loop
Ship A is located 4.2 km north and 2.6 km east of ship B. Ship A has a velocity of 22 km/h toward the south and ship B has a velocity of 38 km/h in a direction 38° north of east. At what time (in h) is the separation between the ships least
A 4·cm tall candle is placed 300·cm from a lens with a focal length of +60·cm. Note: enter the absolute value of your answers for all distances and heights, How far from the lens will the image be
A lamp is placed 10 cm in front of a concave spherical mirror that forms an image of the filament on a screen placed 3.0 m from the mirror. What is the radius of curvature of the mirror
A canal boat (mass=25,000 kilograms) is being towed at a uniform velocity v=3.10 m/s, Determine the magnitude and direction of the towing force
A stone is dropped from the roof of a building; 2.10s after that a second stone is thrown straight down with the initial speed of 18 m/s, and both stones hit the ground at the equal time. How long did it take for the first stone to hit the ground.
An engine puts out 5 kW of power at an efficiency of 35.0%. If 8850 J of energy is expelled each cycle find the energy absorbed in each cycle
A cylinder of gas is at room temperature (20°C). What is the new pressure of the gas relative to its initial pressure
A uniform electric field of magnitude 395 N/C pointing in the positive x-direction acts on an electron, What is the work done by the field on the electron
For a string stretched between two supports, two successive standing-wave frequencies are 505Hz and 630Hz . There are other standing-wave frequencies lower than 505Hz and higher than 630Hz.
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