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Question: A rope is connected between two point A and B 120cm apart at the same level . a load of 200N is suspended from a point C in the rope 45cm from , find the load that should be suspended from the rope D 30cm from B, which will keep the rope CD horizontal.
Red light of wavelength λ = 632.8 nm is incident on apair of slits whose separation is 0.70 mm. What is the separation of neighboring interference maxima on a screen 170 cm from theslits?( mm)
Determine the temperature at which the resistance of atungstenwire will be three timesits value at 20°C. Assume its coefficient of resistivity remains constant.
What is the minimum energy needed to create a electron-positronpair when the photon collides with an electron? I know what to do when it collides with a nucleus, I can not figureout what to do about an electron.
A car at the Indianapolis-500 accelerates uniformly from the pit area, going from rest to 285 km/h in a semicircular arc with a radius of 190 m. Determine the tangential acceleration of the car
A 1.0 kg ball is thrown horizontally with a velocity of 15 m/s against the wall. If the ball rebounds horizontally by a velocity of 13m/s and the contact time is .020 s, what is the force exerted on the ball on the wall?
After solving a difficult physics problem, an excited student throws his book straight up. How much time does it take until the book hits the floor
In San Francisco a very simple technique is used to turn around a cable car when it reaches the end of its route. The car rolls onto a turntable, what is the magnitude of the net torque applied to the car
german physicist werner heisenberg related the uncertainity of an objects position triangle x to the uncertainity in
A 50kg object is sitting on top of a pistion that is supported by a cushion of air in a cylinder. The radius of the piston is 1 m. In order to support this weight, how much force is needed?
A spelunker drops a stone from rest into a hole. The speed of sound is 343m/s in air and the sound of the stone striking the bottom is heard 1.34s after the stone is dropped. How deep is the hole?
A cylindrical space station located in distant space, rotates with constant angular velocity about its axis. Astronaut Carol rotates with the station and is located at the perimeter, a distance R from the axis.
A car is traveling around a horizontal circular track with radius r = 150 m at a constant speed v = 28 m/s as shown, What is the magnitude of the car's acceleration, What is the x component of the car's acceleration when it is at point A
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