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1. a. Calculate the magnetic field strength and direction at location (x,y)=(-1, -1)in cm due to a proton at (x,y)=(1, 1)in cm and moving with velocity v=4.5x10^7(j hat) m/s.
b. Similarly, find the speed and direction of a proton passing through the origin and where the magnetic fields are: B1=1.0x10^-13 (j hat) T at (x,y,z)= (1,0,0) in mm, B2= -1x10^-13 (i hat) at (0,1,0) in mm.
What is the magnitude of the average force of the bat on the ball throughout the ball-bat contact.
A disk, initially rotating at 149 rad/s, is slowed down with a constant angular acceleration of magnitude 4.23 rad/s2. (a) Explain by how much time does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time?
An 80.7-kg jogger is heading due east at a speed of 1.950 m/s. A 53.60 kg jogger is heading 33.1° north of east at a speed of 2.89m/s. compute the magnitude (enter first) and direction of the sum of momenta of the two joggers.
An "energy bar" contains 21g of carbohydrates. If the energy bar was his only fuel, how far could a 68 kg person walk at 5km/hr? Express your answer using two significant figures.
Assuming that the disks form a circular parallel plate capacitor and the electron are initially at rest when they pass through the first disk. A) determine the acceleration that the electrons undergo and B) the speed of the electrons as they pass ..
A block of unknown mass, m, is brought into the configuration shown. It was measured that upon release the block shot upward a maximum distance of 2m. Calculate the mass of this block? The upper spring has a natural length of 1m, and the lower spr..
The end milling cutter has two teeth and its diameter = 15.0mm. Find out the feed rate and time to complete the cut.
Compute what resolving power is needed to measure with a spectrograph the natural line width of the alpha particles from Po-212
How much work is done by the outside force in moving the particle from A to B?
A mass is stretched 4 centimeters from the equilibrium position of a spring. If the displacement is doubled, what can be concluded about the restoring force? A. It is halved. B. It is doubled. C. It stays the same. D. It is increased by 4. E. It i..
What is the minimum coefficient of friction between tires and road.
How far would trampoline stretch if the performer stands still on it while taking a bow.
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