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Three forces act on a mass causing it to move from rest to the right a distance, 3.22 m. If the forces at 71.37 at 0 degrees, and 96.96 at 30 degrees, and 33.66 at 150 degrees. How much work is done by the force at 0 degrees?
what happens to speed of sound in air if you quadruple the temperatur of the air, How many times larger does it become
The aurora is caused when electrons and protons, moving in earth's magnetic field of 5x10^-5 T, collide with molecules of the atmosphere and cause them to glow. What is the radius of the circular orbit for (a) an electron with speed 1.0×10^6 and (b) ..
A softball of mass 0.220 kilogram that is moving with a speed of 4.0 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Evaluate the mass of the target ball
A 3.93-g bullet, traveling at a speed of 421 m/s, strikes thewooden block of a ballistic pendulum, such as that in Figure 7.14.The block has a mass of 250 g. (a) Find the speed of thebullet/block combination immediately after the collision.
A 755 Newton person stands in the middle of a frozen pond of radius 10.0 meter. Find how long does it take him to reach the south shore
An AC generator supplies an rms voltage of 120 V at 60.0 Hz. It is connected in series with a 0.350 H inductor, a 5.00 ?F capacitor, What is the peak voltage across the capacitor
A coil lies flat on a level table top in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is the direction of the induced current in this coil as the field increases..
A proton (1.67 × 10-27 kg) is accelerated to 99.8% the speed of light. How much energy did the accelerator have to impart
A 118 g cube of ice at 0°C isdropped into 1.0 kg of water that was originally at 84°C. What is the final temperature of the water after the ice has melted
If an electron moves perpendicular to the same magnetic field with this same translational speed, what is the radius of its circular orbit
Alice drops a rock to a well. She hears the splash of the rock 4.1 seconds later. The speed of sound is 340 m/s. How deep is the well?
a woman started a new job as an assistant to a jeweler. her boss just received a very heavy necklace whose owner claims
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