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Q. A proton moves perpendicularly to a uniform magnetic ?eld B with a speed of 1.9 × 10 ^7 m/s and experiences an acceleration of 8 × 10 12 m/s 2 in the positive x direction when its velocity is in the positive z direction. The mass of a proton is 1.673 × 10 -27 kg. Find the magnitude of the ?eld.
Q. A 7.80-g bullet moving at 570 m/s penetrates a tree trunk to a depth of 5.6 cm.
Use work and energy considerations to find the average frictional force that stops the bullet.
At one instant a bicyclist is 53m due east of a park's flagpole, going due south with a speed of 12m/s. Then 37s later, the cyclist is 53m due north of the flagpole, going due east with a speed of 12m/s. For the cyclist in this 37s interval.
W hat is lumberjacks speed relative to the shore
A 1.5 {rm kg} block rests on top of a 7.5 {rm kg} block. The cord and pulley have negligible mass, and there is no significant friction anywhere. What force F should be applied to bottom block so the top block accelerates to the right at 2.60 m/s^..
Two pipes of equal length are each open at one end. Each has the fundamental frequency of 500 Hz at 325 K. In one pipe the air temperature is increased to 330 K. If the two pipes are sounded together, what beat frequency results.
A town is installing a new 10” main to carry drinking water. The only section remaining to be installed is a segment through the middle of town. Calculate the length of pipe required for the pipe system.
How to find out speed of the block
Two long, parallel wires are separated by a distance of 3.40. The force per unit length that each wire exerts on the other is 3.20×10-5, and the wires repel each other. The current in one wire is 0.6690.
A portable 3.5 kw wate heater is immersed for 3 minutes in a plastic filled with 20 kg of water at 20C. what will be the final temperature of the mixture given specific heat of water at 4186 j/gkC.
Visualize the one cubic centimeter as formed by stacking up identical cubes, with one copper atom at the center of each. Determine the volume of each cube.
If a car moving at 82 takes 300 to stop with uniform acceleration after its brakes is applied, how far will it take to stop under the same conditions if its initial velocity is 41.
This is because of the average release of about 0.03 J per kilogram each year. Show that at 500 C increase in temperature for a thermally insulated chunk of granite takes about 13.3 million years. (Assume that the specific heat of capacity c of g..
Discover new angles with respect to the x-axis
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