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Vector A points in the negative y direction and has a magnitude of 4 units. Vector B has three times the magnitude and points in the positive x direction. Find the direction and magnitude of the following vectors. (a) A + B
° (counterclockwise from the +x-axis) (b) A - B
° (counterclockwise from the +x-axis) (c) B - A
° (counterclockwise from the +x-axis)
Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The length of each rod is 0.90m, and the mass of each is 0.078 kg. One rod is held in place above the ground, while other flo..
A point source of sound waves emits sound uniformly in all directions. What is the power output of the source
Two particles each have a mass of 5.5 x 10-4 kg. One has a charge of +4.8 x 10-6 C, and the other has a charge of -4.8 x 10-6 C. How fast is each particle moving when the separation between them is one-third its initial value
How far from a -6.20 microcoulombs point charge must a 2.30 microcoulombs, Calculate the distance in meters
A tennis player swings her 1000g racket with a speed of 11m/s, If the tennis ball and racket are in contact for 12ms, find the average force that the racket exerts on the ball
A proton has an initial speed of 3.3*10^5, What potential difference is required to reduce the initial speed of the proton by a factor of two
question1a space platform in form of a thin circular disc of radius a and mass m flying saucer is initially rotating
An arrow is shot at an angle of θ=45° above the horizontal.
Calculate the frequency of the tone perceived by the person if he is moving away from the speaker with a speed of 48 m/s
A cylindrical piston sits on top of hydraulic fluid that exerts a force of 240 N on the piston. Find the magnitude of the net force on the piston
A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from the impact: one travels in the air and the other in the concrete, and they are 6.60s apart. How far away did the impact ..
You are driving north on 107th Avenue at a speed of 31.2 mph. At what frequency do you hear the siren
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