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A force of 4.7N is required to stretch a certain spring by 1.4cm
A) How far must this spring be stretched for its potential energy to be 0.025J ?
B) How much stretch is required for the spring potential energy to be 0.080J?
Suppose the traffic light is hung so that the tensions T1 and T2 are both equal to 84.7 N. Find the new angles they make regarding the x axis. (By symmetry, these angles would be the same.)
A string that is fixed at both ends has a length of 1.61 m. When the string vibrates at a frequency of 92.8 Hz, What is the fundamental frequency of the string
A solenoid has diameter 2.3cm, lenth 33cm, and inductance 1.34mH, What's the energy stored in the soleniod when it carries a 5.8A current
You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. how far (in kilometers) are you from the base of the arch
An 80.7-kg jogger is heading due east at a speed of 1.950 m/s. A 53.60 kg jogger is heading 33.1° north of east at a speed of 2.89m/s. compute the magnitude (enter first) and direction of the sum of momenta of the two joggers.
A train car with mass m1 = 556 kg is moving to the right with a speed of v1 = 8.6 m/s and collides with a second train car, What is the initial momentum of the first train car
At the Winter Olympics, an athlete rides her luge down the track while a bell just above the wall of the chute rings continuously. Find the speed of the athlete
When 5.30* 10^5 J of heat is added to a gas enclosed cylinder fitted with a light frictionless piston maintained at atmospheric pressure, estimate the work done by the gas
A puck is sliding without friction on the ice at a speed of 2.48 m/s. Find the speed and direction of the second puck after the collision
During a fun run a girl runs for 12 s moving 2.7 m/s. She then accelerates at 0.5 m/s^2 over the next 25 m. What distance did she cover during the entire period
How rapidly atom are assembled in this protein synthesis
A 1590 kg car starts from rest on a horizontal road and gains a speed of 61 km/h in 30 s (a) what is its kinetic energy at the end of the 30 s.
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