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A. student holds a book of mass m in her hand and raises the book vertically at constant speed. Sketch a free-body diagram for the book. As the book rises at steady speed, is the force exerted by the student on the book greater than, less than, or equal to mg? Explain briefly.
Yellow light that has a wavelength of 6.32 x10^2 nm passes through two narrow slits that are 0.201 mm apart. An interference pattern is produced on a screen 183 cm away. What is the location of the first-order image.
A 685 kg car stopped at an intersection is rear-ended by a 1470 kg truck moving with a speed of 12.5 m/s. find the final speed of both vehicles after the collision
Two cantilever beams are joined together through a simple pin, as shown in Figure. The concentrated load at the midspan is P =200 lb.
A block with a coefficient of kinetic friction uk = 0.4 slides down a inclined plane. What acceleration does it experience?
A learner (m = 66 kilogram) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.04 second. Estimate from what height did the student fall
Two rectangular blocks are stacked on a table. The lower block has a mass of 38.6 kg and upper block has a mass of 3.40 kg. The coefficient of kinetic friction among the lower block and the table is 0.260. The coefficient of static friction among the..
Doppler effect-one that is succinctly written is more likely to be read and responded to, thus furthering our discussion on that topic.
A 30-kg child rides on a circus Ferris wheel that takes her around a vertical circular path with a radius of 20 m every 22 s. What is the magnitude of the resultant force on the child
Electric Force of Three Collinear Points Ranking Task
in a rectangular coordinate system a positive point charge q 6.00 x 10-9 c is placed at the point x 0.150 m y 0 and
q1. an artificial satellite circling the earth completes each orbit in 102 minutes. the radius of the earth is 6.38 106
1. An intern pushes a 72 kg patient on a 15 kg gurney, producing an acceleration of 0.60 m/s^2. A) How much work does the intern do by pushing the patient and gurney through a distance of 2.5 m? Assume the gurney moves without friction. B) How far..
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