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A light spring has an unstretched length of 35.0 cm. If one end is attached to the top of a door frame and a 7.50 kg weight is hung from the other end, the length of the spring is 41.5 cm. What is its spring constant?
In a Hall-effect experiment, a current of 2.1 A sent lengthwise through a conductor 1.0 cm wide, 4.5 cm long, find the drift velocity of the charge carriers
a rocket is launched at an angle of 55.0deg above the horizontal with an initial speed of 101 ms. the rocket moves for
A lens with a focal length of 25 cm and a concave mirror with a radius of curvature of 100 cm are placed 1.0 meters apart. determine if it is real or virtual
Four identical masses of mass 710 kg each are placed at the corners of a square whose side lengths are 15.0 cm. What is the magnitude of net gravitational force on one of the masses, due to the other three.
two charged particles are moving with equal velocities of 8.70 ms in the x-direction. at one instant of time the first
The electric field strength is 2.40 x 10^4 N/C inside a parallel-plate capacitor with a 1.40 mm spacing, What is the electron's speed when it reaches the positive plate
question an electron is accelerated through 2.45103v from rest and then enters a uniform 2.80-t magnetic field.a what
In a certain particle accelerator a 5MeV beam of protons with a current of 0.5mA and beam radius of 1.5mm is shot at a target. How many protons hit the target in one second
Consider a spring of stiffness k and mass m. If we stretch - simultaneously - both ends of the spring by force F1 and F2. What will be the elongation of the spring
What if, instead, you threw the flashlight away from you to change your momentum toward the spacecraft. If the flashlight had a mass of 2.00-kg and traveled at a speed of 10.0 m/s, how long would it take you to get back
An airplane needs to reach a velocity of 402km/h to take off. On a 2000 m runway, what is the minimum acceleration necessary for the plane to take flight.
While John is travelling along a straight interstate highway he notices that the mile marker reads 243 km john travels until he reaches his path to the 178 km marker what is john's resultant displacement from the 243 km marker.
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