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A 9.2 dm long and even-weight rod rests on a support. 0.55 dm from one end hangs a dynamometer so that the rod will hang horizontally. Then the bar shows 4.4 N. How much does the rod weigh?
an immersion heater used to boil water for a single cup of tea plugs into a 120 v outlet and is rated at 350 w .a what
The speed of an ion in a particle accelerator is doubled from 0.430c to 0.860c. determine the final relativistic momentum of the ion
One particle, of mass m, moves with a speed v in the x-direction, and another particle, of mass 2m, moves with a speed v/2 in the y-direction. What is the velocity of the center of mass of these two particles
A simple pendulum is 7.00 m long. What is the period of simple harmonic motion for this pendulum if it is located in an elevator accelerating upward at 5.00 m/s2
A copper ball with a radius of 1.47 cm is heated until its diameter has increased by 0.198 mm. Assuming an initial temperature of 21.3°C, calculate the final temperature of the ball
A convergent-divergent nozzle with an exit-to-throat area ration of 1.616 has exit and reservoir pressures equal to 0.947 and 1.0 atm, respectively
A 7.10-kg box is sliding across the horizontal floor of an elevator. Determine the kinetic frictional force that acts on the box
How would you work the problem if the net electric field produced at the center of the circle made an angle of 29.3 degrees with the vertical axis, measured counter clockwise.
A block of inertia .2 kg is launched from a spring onto a frictionless surface. The velocity it has upon leaving the spring is 2.5 m/s. What is the impulse delivered to the block by the wall
Compute the root-mean-square speed of ammonia (NH3) molecules at 56.0° C. An atom of nitrogen has a mass of2.33°—10–26 kg and an atom of hydrogen has a mass of 1.67°—10–27 kg.
A 93 kilogram astronaut and a 1400 kilogram satellite are at rest relative to the space shuttle. Find the initial distance from the shuttle to the astronaut
Two 5.3cm x 5.3cm metal plates are separated by a 0.20--thick piece of Teflon. What is the maximum potential difference between the disks
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