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The potential in a region between x = 0 and x = 10.0 m is V = b + mx, where b = 20.0 V and m = -6.00 V/m. Find (a) the potential at x = 0, 2.00 m and 5 m and (b) determine the magnitude and direction of the electric field at x = 0, 2.00 m and 5.00 m.
A 4.3-m long plank with a weight of 164 N is place on a dock with 1.4 m of its length extended over the water. How far from the edge of the dock can the boy move until the plank is just on the verge of tipping
A thin ring of radius R rotating with angular velocity ω isplaced flat on a horizontal table the coefficient of frictionbetween the ring and the table is μ. After what time will the ring stop spinning
This hill slopes upward at a constant angle of 40 degree above the horizontal. The coefficient of static and kinetic friction between the hill and the rock are .75 and 0.20, respectively.
You're designing a toy rocket to be launched by a spring. The launching apparatus has room for a spring that can be compressed 14cm, and the rocket's mass is 65 g. If the rocket is to reach analtitude of 35 m, what should be the spring constant?
An 8 g of ice cube at %u2013 120 C is put into a thermos flask containing 100 cm3 of tea at 850C. What is the drop in temperature for tea
A block-spring system oscillates with an amplitude of 3.70 cm. The spring constant is 250 N/m and themass of the block is 0.700 kg. Determine the maximum speed of the block
A 354.7 gram rubber ball is dropped from a height of 26.17 meter and undergoes a perfectly elastic collision with the earth. Find what is the earth speed after the collision
A baseball player rounds second base in an arc with a radius ofcurvature of 4.88 m at a speed of 6.1 m/s If he weighs 845Newton's, what is the centripetal force that must be acting
A dynamics cart with a force sensor attached is placed on a level track. Attached to the force sensor is a string of negligible mass that passes over a pulley.
An RL circuit has a 5 kO resistor and a 1 mH inductor. This circuit is driven by a 100 Hz sine wave with 1 V amplitude. What is the amplitude of the current in the circuit
a charge of 3.10?c is held fixed at the origin. a second charge of 3.10?c is released from rest at the position 1.25 m
Determine the Energy (Work) needed to very slowly separate an electron and a proton from an original separation distance of 30 fm to a final separation distance of 80 fm.
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