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You hold a book in place on a chalkboard by applying a horizontal force. Find the minimum horizontal force need to keep the book from sliding down the chalkboard? Suppose that the mass of the book is 1.2 kilogram and the coefficient of static friction between the book and the board is 0.18.
The drawing shows three situations in which a block is attached toa spring. The position labeled “0 m” represents theunstrained position of the spring. The block is moved from aninitial position x0 to a final positionxf, the magnitude of the displ..
What is the basic difference between Newtonian Fluids and Non newtonian fluids?
A Styrofoam cup holding 100 g of hot water at 1.00 102°C cools to room temperature, 17.0°C. What is the change in entropy of the room
a -58 nC charge is distributed uniformly along the x-axis from x = -1.3 m to x = 3.4 m. Consider a point at y = 2.2 m on the y-axis. a) what is the x-component of the electric field at the point
An astronaut drops a feather from 3.5 m above the surface of the moon. If the acceleration of gravity on the moon is 1.62 m/s2, how long does it take the feather to reach the surface
A constant voltage of 7.00 V has been observed over a certain time interval across a 2.30 H inductor. The current through the inductor, measured as 1.00 A at the beginning of the time interval, was observed to increase at a constant rate to a value o..
A 1,200 W hair dryer is operated on a 120 V circuit for 15 minutes. If electricity costs $0.10/kW h, what was the cost of using the blow dryer.
two coconuts fall from rest at the same time one from a tree twice as high as the other.1-if the coconut from the
Find out the direction of the train motion
A jet flying at 137 m/s banks to make a horizontal circularturn. The mass of the jet is2.29 × 105 kg and radius of the turn is 3810 m. find the magnitude of the necessary lifting force
It takes 2.80 s for a small ball with a mass of 0.120 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released
a 2.00 kg frictionless block is attached to an ideal spring with force constant 315 N/m. initially the spring is neither stretched nor compressed, find the maximum force the spring exerts on the block
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