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A 150-kg block slides across ice and comes to a stop in 12.50m
1) Coefficient of kinetic friction among ice and block is 1.800, what is the frictional force acting on the block?
2) What was the speed of the block before it stopped?
A spring has an unstretched length of 12cm. When an 80 g ball is hung from it, the length increases by 4.0 cm.Then the ball is pulled down another 4.0 cm and released. a) What is the spring constant? b) What is the period of the oscillation?
A ball traveling in a circle with a constant speed of 3 m/s has a centripetal acceleration of 4 m/s2. What is the radius of the circle
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C ) and in boiling pentane (36.1°C). The separate pressures are 0.349 atm and 1.442 atm. Hint: Use the linear relationship P = A + BT, where A and B ..
A student is about to do a push-up. Her center of gravity lies directly above P on the floor, which is 0.9 m from her feet and 0.5 m from her hands. what is the force exerted by the floor on her hands
The capacitance of a plate capacitor is proportional to the dielectric constant. An electric field can induce dipoles in a material. Stored energy and voltage of a capacitor with a givencharge are proportional to each other. A dielectric material doe..
A toy cannon uses a spring to project a 5.31-g soft rubber ball. The spring is originally compressed by 4.97 cm and has a force constant of 8.09 N/m. At what point does the ball have maximum speed
q1. a wheel 45.0 cm in diameter accelerates uniformly from 206rpm to 340 rpm in 7.0 s. how far will a point on edge of
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. How long (s) is he in the air
Follow that with some of her work on repressed memories. After completing your readings on the WebLink, the textbook, and the PowerPoint presentation, address the prompts for your assignment.
A student decides to move a box of books into her dormitory room bypulling on a rope attached to the box. She pulls with a force of110.0 N at an angle of 23.0° above thehorizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic fric..
A child goes down a playground slide with an acceleration of 1.22. Find out the coefficient of kinetic friction between child and slide if the slide is inclined at an angle of 31.0 below the horizontal.
1 although all atoms have moving electric charges not all materials are magnetic for example copper or wood are not
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