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A light spring having a force constant of 139N/m is used to pull a 9.60kg sled on a horizontal ice rink. The coefficient of kinetic friction between the sled and the ice is 0.200. The sled has an acceleration of 2.40m/s^2 . A)Calculate the net upward force on her at the moment the spring reaches its greatest compression. B) Calculate her upward acceleration, in g’s at that moment.
The amplitude of the electric field of an electromagnetic wave is 197 V/m.
You need to design a photodetector that can respond to the entire range of visible light. find the maximum possible work function of the cathode
Unless otherwise stated, all objects are located near the Earth's surface, where g = 9.80 m/s2. find the coefficient of kinetic friction between the ice and the puck
A skier (m=63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 6.10 m and D = 12.2 m, find H.
A wire is 1.50 m long and has a diameter of 1.5. The tensile modulus of the wire is 6.20 x 10^10 N /m. what is the increase in length of the wire
A vehicle attempting to aerbrake into orbit around Mars needs to achieve an equivalent deltaV(retro) of 2 km/s. what is the average drag force (in g's) we must attain
Discover the tensions in the rope
A small bag of sand is suspended by a string of length L=1.2m. A bullet of mass m=8g, moving with initial speed vi = 600m/s in the horizontal direction, Determine the mass of the sand bag
A wire loop of radius 0.50 m lies so that an external magnetic field of magnitude 0.30 T is perpendicular to the loop. Find the magnitude of the average induced emf in the loop
A box of ant aunts m1 = 1.65kg and a box of ant uncles m2 = 3.30kg, slide down an inclined plane while attached by a massless rod parallel to the plane. The angle of the incline is zeta = 30 degree. The cefficient of the kinetic friction between the ..
The capacitor in an LC circuit has a maximum charge at t= 1 ms. What is the circuit's period of oscillation
A child rides a pony on a circular track whose radius is 4.0m, Find the distance after a complete circuit of the track
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