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Vector A has a magnitude of 12.5 and is directed at 90 degrees counter-clockwise from the +x axis. Vector B has a magnitude of11 and is directed at 117 degrees counter-clockwise from the+x axis. If R= B- A, what is the magnitude of vector R?
a person pushes with a force of 10n on a stick pin to try to push it into a bulletin board. if the tip of the needle is
A setup similar to the one shown in the figure below is often used in hospitals to support and apply a horizontal traction force to an injured leg. (Let m = 6.05 kg and ? = 81.0°.) What is the traction force exerted to the right on the leg?
An archer shoots a 100 g arrow straight up in the air. The bow was drawn back 50 centimeter by a 150 Newton force. Find how high does the arrow rise assuming friction is negligible
A ball is thrown vertically upward with a speed of 12.0 m/s. How long does it take to reach its highest point
Betty Bodycheck (mB = 54.7 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 42.4 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Find both Betty's and Sally's Kinetic Energies
An air-filled parallel-plate capacitor has plates of area 2.70 cm2 separated by 2.00 mm. The capacitor is connected to a 18.0-V battery. What is the magnitude of the uniform electric field between the plates
A particular refracting telescope takes the moon and magnifies the image by a power of 250x with the observer having a relaxed eye, What are the focal lengths of the two lenses
Initially an unpolarized light with intensity I is sent through a polarizer with its axis set to zero degrees. what is the angle of the second polarizer
an elevation must be established on a benchmark on an island that is 2536.98 ft from the nearest benchmark on the lakes
A 5?, 10?, and 15? resistor are connected in parallel and the combination connected in parallel to a 15 V battery with negligible resistance. What is the current through the battery
A mass m moves along the x-axis subject to an attractive force given by 17β2mx/2 and retarding force given by 3βmv, where x is the distance from the origin and β is a constant. Find what is the max amplitude
The distance between the plates of a parallel plate capacitor with air between the plates is 9 mm. what is the new energy stored in the capacitor
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