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Two forces act on an object. One has a magnitude of152 newtons and points at an angle of68.0° above the +x axis. The second has a magnitude of 291newtons and points at an angle of 20.0° above the +x axis. A third forceis applied and balances to zero the effects of the other two. What are the magnitude and direction of this third force? Specify thedirection relative to the negative x axis.
A child throws a ball with an initial speed of 8:00m/s at an angle of 40 degrees above the horizontal, what is the magnitude of the ball's velocity just before it hits the ground
An expensive grand piano has been pushed to the top of the ramp 1.77 m high inclined at 28.90 degrees at the back of a moving van. How long will it take the piano to reach the bottom of the ramp
The loaded cab of an elevator has a mass of 1.7 x 103 kg and moves 239 m up the shaft in 19 s at constant speed. At what average rate does the force from the cable do work on the cab.
In 1910 Rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil. He unexpectedly observed a few of the particles scattered almost directly backward.
A space traveler weighs 580 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
A wave in which the disturbance is perpendicular to the direction of travel of the wave is a... Two waves of equal amplitudes traveling in opposite directions pass through each other. After they have passed through each other, their amplitudes have..
A rocket passes Earth and travels to a star, 80 light-years away. The earth hand the star are in the same frame of reference and the rocket moves at 0.9c with respect to the earth and the star. How many years does it take the rocket to reach this s..
when it falls back it hits the ground with speed v1=50m/s. The mass of the ball is m=20g. Evaluate what is the total work done by the drag force while the ball is in the air?
If you place the box on a dolly of mass 4.7 and with coefficient of rolling friction 2.0×10−2, illustrate what horizontal acceleration would that 154 force provide?
With what frequency should the tip be tapped to make the strip oscillate with maximum amplitude?
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. Calculate the intensity of the sound wave emitted
he beaker has a mass 15 grams when its empty the beaker plus the liquid has a mass of 38 grams. the liquid has a volume
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