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A wire is stretched between two posts. Another wire is stretchedbetween two posts that are twice as far apart. The tension in thewires is the same, and they have the same mass. A transverse wavetravels on the shorter wire with a speed of 291 m/s. What would be the speed of the wave on the longer wire?
The length of a beam increases by 1.26mm when its temperature is raised from 29.87oC to 71.49 oC. What is the length of the beam at the initial temperature
A harmonic wave in a wire has amplitude 7.07 mm, wavelength 2.61 m, and frequency 254 Hz. What is the propagation speed of the wave
a rigid structure consisting of a circular hoop of radius R and mass m, and a square made of four thin bars, calculate the angular momentum about that axis
A body is moving with velocity of 8m/s. After 5 Seconds the velocity of the body becomes 18m/s. Find the acceleration of the body
A 1460-kg racecar is driving around a circular track of radius 161 m. What is the magnitude of the net force acting on the vehicle
A cable is lifting a construction worker and a crate, as the drawing shows. What is the tension in the cable above the worker
Suddenly this mass is struck by another 2.00-kg object traveling along the x-axis at 3.00 m/s, and the two masses stick together.
A neuron is stimulated with an electric pulse. The action potential is detected at a point 3.20cm down the axon 0.0053s later, What is the speed of the electric pulse along the axon
A 200KeV electron (i.e., an electron having kinetic energy of 200KeV) collides with a 200KeV positron (a particle with opposite charge of electron but) moving in the opposite direction in a head-on collision.
A Beryllium nucleus consists of 4 protons and 5 neutrons. What is the potential energy of the nucleus due to electrical forces
An experimental apparatus includes a prism made of sodium chloride (n=1.54). what is the required apex angle of the prism
Starting from rest, a 5.4-kg block slides 2.10 m down a rough 30.0° incline. Determine the work done by the force of gravity
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