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A mass lies on a horizontal surface with friction, initially at rest. A constant force of 6.2 Newtons is applied to the object in the +x direction and this force is enough to overcome static friction and the object slides 7 meters in the +x direction. The net work done by all the forces acting on the mass after it slides this displacment is 17.8 Joules. How much work is done the friction force in Joules? Include a negative sign if it's negative.
a room measures 1.0 m by 3.8 m by 5.9 m. the heating and air-conditioning ducts to and from the room are circular with
A planet of mass m = 8.15 Ã? 1024 kg is orbiting in a circular path a star of mass M = 6.05 Ã? 1029 kg. What is the orbital period (in earth days) of the planet Tplanet
A particle with mass 1.65e-12 kilogram and electric charge -8.22e-8 C moves perpendicularly to a uniform magnetic field of strength 5.45e-3 T. Evaluate the radius of the circular orbit
A guitar player tunes the fundamental frequency of a guitar string to 300 Hz. (a) What will be the fundamentalfrequency if she then increases the tension in the string by 20%?
On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short distance. How large is the force that the catapult must exert on the jet
A 38.0 kg box initially at rest is pushed 4.00 m along a rough, horizontal floor with a constant applied horizontal force of 125 N. determine the final speed of the box
A pair of speakers separated by 0.700 m is driven by the same oscillator at a frequency of 655 Hz. How far must the observer walk before reaching a relative maximum in intensity
This was an overestimate, but by the time Newton wrote Principia, a number of astronomers had reproduced the result, and narrowed the transit time to 16 minutes. Considering that the distance from the Sun to the earth is 93 Million Miles, what do ..
A 55g horizontal metal bar, 15cm long, is free to slide up and down between two tall, vertical metal rods that are 15cm apart. What is the terminal speed at which the bar falls
A converging lens of focal length 8.000 cm is 20.3 cm to the left of a diverging lens of focal length -6.00 cm. Find the magnification of the coin's final image
The source in given Figure has a 100-mA output current limit. Design an interface circuit so that the load voltage is v2= 20 V and the source current is i1.
If the woman is clocked at 18.0m/s at the bottom of the slide, find the work done on the woman by friction.
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