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A 7.1 kg body is at rest on a frictionless horizontal air trackwhen a constant horizontal force actingin the positive direction of an xaxisalong the track is applied to the body. A stroboscopic graph of theposition of the body as it slides to the right is shown in Fig.7-26. The force isapplied to the body at t =0, and the graph records the position of the body at 0.50 sintervals. How much work is done on the body by the applied force between t =0.48 and t =1.2 s?
A block of mass A=.75kg moves with a constant speed v0=5.2 m/s and approaches another block which is at rest and attached to an ideal spring with the force constant k=2.5 N/m. Determine the amplitude of oscillations of the 2 blocks
A tungsten wire is 1.50m long and has a diameter of 1.00 mm. At 20 degrees celsius a current of 50mA flows through the wire. Determine the potential across the wire
In preparation for a demonstration on conservation of energy, a professor attaches a 7.2-kg bowling ball to a 2.9-m-long rope. Find the force the professor is exerting on the ball
When a potential difference of 166 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 32.0 nC/cm2. What is the spacing between plates.
Two bumper cars collide head on. Before the collision, car 1 is coming from the right at 3m/s and has a total mass of 200kg. Car 2 is coming from the left at 5m/s and has a total mass 250kg (the driver of car 2 is a lot fatter than the driver of c..
In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotati..
A spherical capacitor contains a charge of 3.30nC when connected to a potential difference of 250 V. Calculate the radius of the inner sphere
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 9.41 m to a store. The magnitude of the shopper's displacement from the bottom of the escalator to thestore is 16.0 m. The v..
an electric point charge of q1 5.03 nc is placed at the origin of the real axis. another point charge of q2 3.93 nc
A rifle with a barrel length of 57 fires an 11 bullet with a horizontal speed of 440. The bullet strikes a block of wood and penetrates to a depth of 12. What resistive force (assumed to be constant) does the wood exert on bullet.
The power P of an Electric circuit varies jointly with resistance , R and with the square of the current, I. find the power if the current is 2.00 A and the resistance is 2.00 ohms
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet
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