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A charge of +23.9 C is at the origin. When charge Q is placed at 2 m along the positive x axis, the electric field at 2 m along the negative x axis becomes zero. What is the value of Q? Express the answer with one decimal place.
a rifle with a weight of 25 n fires a 4.0 g bullet with a speed of 290 ms.a find the recoil speed of the rifle.b if a
A steam locomotive uses the back-and-forth motion of a drive rod to turn its 1.55 m diameter wheel. Each compete oscillation of the rod corresponds to one wheel revolution.What's the rod's oscillation frequency when the train is moving at 30 m/s ?
A child goes down a playground slide that is inclined at an angle of 25.0° below the horizontal. Find the acceleration of the child
A thin spherical shell has a radius of 1.70 m. An applied torque of 920 N m imparts to the shell an angular acceleration equal to 6.70 rad/s2 about an axis through the center of the shell. What is the rotational inertia of the shell
A 3.10-m-long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 73.0 kg construction worker stands at the far end of the beam. What is the magnitude of torque abou..
A 168 kg polar bear standing 1.2 meters tall walks onto a floating sheet of ice 0.305 m thick. What is the surface area of the ice floe
When a certain liquid freezes, it expands about 11.5%. What would be the pressure increase inside an engine block
Two people hear a tornado siren, What is the intensity level (in dB) at the farther listener relative to the other listener
If you had a single polarizer, how might you determine whether or not light from a room light was polarized when emitted from the bulb.
The surface charge density on an infinite sheet is -2.0 x 10-6 coulomb. How far does the particle travel before reaching its truning point
question1a 0.225kg sample of tin originally at 97.5 degrees c is dropped into 0.115kg of water firstly at 10.0 degrees
A skydiver of 75 kg mass has a terminal velocity of 60m/s. At what speed is the resistive force on the skydiver half that when at terminal speed
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