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When a 9.80 kg mass is placed on top of a vertical spring, the spring compresses 4.00 cm. What would the compression of the spring (in cm) be if the spring-mass system was placed in an elevator that is accelerating upward at 1 m/s2?
Three equal point charges, each with charge 1.00 , are placed at the vertices of an equilateral triangle whose sides are of length 0.350. Illustrate what is the electric potential energy of the system?
A charge of -4.00 nC and a charge of -6.10 nC are separated by the distance of 60 cm. Find out the position at which a third charge of +7.90 nC can be placed so that net electrostatic force on it is zero.
At time 0 a grinding wheel has an angular velocity of 30. It has a constant angular acceleration of 35 until a circuit breaker trips at time = 2.20. From then on, wheel turns through an angle of 428 as it coasts to a stop at a constant angular dec..
In a large centrifuge used for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. How long is the arm of the centrifuge
A 1.8 kg ball of putty moving to the right has a head-on inelastic collision with the .50 kg putty ball moving to the left. If the combined blob doesn't move just after the collision, what can you end about the relative speeds of the balls before the..
If we imagine an electron as orbiting the proton, with the orbit of radius 5 x 10 ^-11 m, what is the total energy of the atom
A beam of laser light (? = 741 nm) hits a black wall and is fully absorbed. what is the total force exerted by the photons on the wall
Water flowing through a 3.0cm -diameter pipe can fill a 200L bathtub in 3.3min. calculate the speed of the water in the pipe
The current through a 1.5 H inductor changes from zero to 1mA in 5 us. How much is the absolute value of self-induced voltage
A laser beam aimed from the earth is swept across the face of the moon. what is the angle of divergence of the laser beam
A sailboat leaves a harbor and sails 1.80 km in the direction 65 degrees sounth of east, the boath then sails 1.1 km in the direction 15 degrees north of east. the trip takes 15 minutes. what is the magnitude and direction.
Sound with a frequency of 466 Hz travels through steel. What is the speed of the sound in steel?
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