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A(n) 641 N man stands in themiddle of a frozen pond of radius 11.7m. He is unable to get to the other sidebecause of a lack of friction between hisshoes and the ice. To overcome thisdifficulty, he throws his 1.2 kg physics textbookhorizontally toward the north shore, at a speed of6.7m/s. The acceleration of gravity is9.81m/s2. How long does it take him toreach the south shore?
linda pulls a sled with force 89 newtons at 30 degrees east of north. find the resultant force and direction
Mount McKinley (also called Denali) is the tallest mountain in North America, with a height of 6,200 m above sea level. how much work is done by gravity on the person
The cable pulls horizontally on the box, and a 50.30 bag of gravel rests on top of the box. The coefficients of friction between the box and roof are shown. The system is not moving. Find out the friction force on the bag of gravel.
A 15-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 26 N. Find the coefficient of kinetic friction between the runners of the sled and the snow
Two college students having the same mass M roll toward each other on roller blades, each moving at the same speed v. What is the combined momentum of the two skaters?
question1two speakers one directly behind other are each generating a 268-hz sound wave. what is the least separation
calculate the electric field at the center of a square 53.0 cm on a side if one corner is occupied by a 48.0 microc
A 2{rm kg} box rests on a plank that is inclined at an angle of 65 ^circ above the horizontal. The upper end of the box is attached to a spring with a force constant of 390 N/m.
A rifle bullet with a mass of 17.0 g traveling toward the right at 240 m/s strikes a large bag of sand and penetrates it to a depth of 21.9 cm. Determine the magnitude and direction of the friction force
A microscope has an eyepiece of focal length 2.00 cm and an objective of focal length 3.00 cm. How far from the eyepiece is the image formed by the objective
Two loudspeakers are located 3.57 m apart on an outdoor stage. A listener is 26.7 m from one and 27.7 m from the other. What is the lowest frequency that gives the maximum signal (constructive interference) at the listener's location
Calculate the absorbed dose in Gy to the skin of a person which receives 1500 ergs/gm of beta radiation from a cloud of radioactive krypton-85 gas.
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