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A tube of air is open at only one end and has a length of 1.29 m. This tube sustains a standing wave at its 7 th harmonic. What is the distance between one node and the adjacent anti-node?
The flux in a transformer changes at a rate of 0.4 Wb/s. The primary coil has 40 turns and the secondary coil has 500 turns
A Carnot engine has an efficiency of 0.361, and the temperature of its cold reservoir is 406 K. (a) Determine the temperature of its hot reservoir. (b) If 5950 J of heat is rejected to the cold reservoir, what amount of heat is put into the engine..
A three-phase synchronous generator is connected to a step-up transformer T1, which is connected to a 60km long transmission line. As the far end of the line, a step-down transformer bank T2 is connected. The secondary of T2 supplies two loads L..
A 21.8-kg box rests on a frictionless ramp with a 15.7° slope, what is the smallest force F the mover will have to exert to move the box up the ramp
What least heat is needed to bring 80 of water at 20 to the boiling point and completely boil it away? (answere in Joules).
A 230-N child is in a swing that is attached to ropes 1.90m long. Find out the gravitational potential energy associated with child relative to her lowest position at the following times.
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 particle with a charge of -60.0 nC is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm and outer radius 24.0 cm, Calculate the speed of the proton
A uranium-fuelled research reactor has a cubic shape with sides of length 1.0 m. estimate the power out of the reactor in units of watts
A vertical scale on a spring balance reads from 0 to 245 rm{N}. The scale has the length of 11.0 rm{cm} from the 0 to 245 rm{N} reading. A fish hanging from bottom of the spring oscillates vertically at a frequency of 3.00 rm{Hz}.Ignoring the mass..
A motorcycle is travelling at a constant velocity of 30ms. The motor is in high gear and emits a hum of 700Hz. find the period of the sound waves emitted from the motorcycle
A ping-pong ball of mass 2 gm and traveling with a velocity of 2 m/s collides with stationary tennis ball of mass 10 gm. Calculate the velocity of the ping-pong ball after the collision
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