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A person pulls a toboggan for a distance of 32.7 m along the snowwith a rope directed 24.9 ° above the snow. The tension in therope is 91.6 N. (a) How much work is done on thetoboggan by the tension force? (b) How much workis done if the same tension is directed parallel to the snow?
what is the minimum diameter of the eyepiece required to collect all the light entering the objective from a distant point source located on the telescope axis
What is the pressure change in water going from a 3.2- cm-diameter pipe to a 2.3- cm-diameter pipe if the velocity in the smaller pipe is 4.0 m/s
A fully equipped astronaut has a mass of 140 kg. If the astronaut has a weight of 675 N standing on the surface of a planet, what is the acceleration due to gravity on this planet?
tyrone an 85-kg teenager runs off the end of a horizontal pier and lands on a free-floating 158-kg raft that was
A charging bull elephant with a mass of 5240 kg comes directlytoward you with a speed of 4.55m/s. You toss a 0.150 kg rubber ballat the elephant with a speed of 7.81 m/s.
At what height above the surface of the earth does the balloon have a speed of 7-m/s.
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, How much energy is stored in the flywheel
question an auto race is held on a circular track. a car completes one lap in a time of 19.3 s with an average
Two charges of equal magnitude exert an attractive force of 2.5×10-4 N on each other. If the magnitude of each charge is +3.0? C, how far apart are the charges
A catcher catches a 145 g baseball traveling horizontally at 38.0 m/s. How large an impulse does the ball give to the catcher
A power supply has an open-circuit voltage of 43.0 V and an internal resistance of 2.00 ?. What additional resistance should be added in series
A thin lens has a focal length of 10 cm. An object is located 15 cm to the left of the lens. What is the total magnification of the lens system
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