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A 7.9-m long string is moved up and down with simple harmonic motion with a frequency of 91 Hz. The crests of the wave travel down the entire length of the string in 0.52 s.
(a) Determine the velocity of the wave on the sting.
(b) Determine the wavelength of the waves on the string.
A sealed tank containing seawater to a height of 11.1 also contains air above the water at a gauge pressure of 2.95. Water flows out from the bottom through a small hole.
A 10.4 m long steel beam is accidentally dropped by a construction crane from a height of 8.67 m. What is the induced EMF in the beam just before impact with the Earth
The Hall voltage across a conductor in a 42mT magnetic field is 1.9mu V. When used with the equal current in a different magnetic field, the voltage across the conductor is 2.7mu V.
A car starts from rest and then accelerates uniformly to a linear speed of 16 m/s in 42 s. If the tires have a radius of 27 cm, what are the following.
A 50.0g silver spoon at 20.0c is placed in a cup of coffee at 90 c. How much heat does spoon absorb from the coffee to reach a temperature of 89c.
Assume the system rotates in the yz plane about the x axis with an angular speed of 2 rad/s. Find out the moment of inertia of the system about the x axis.
Orb spiders make silk with a typical diameter of 0.15 .A typical large orb spider has a mass of 0.50 . If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch?
Important information about Initial kinetic energy of the object Point A is situated at the bottom of a rough plane which is inclined at 45 degrees to the horizontal. A body of mass 0.5 kg is projected from A along and up the line of greatest slop..
A 210 km long high-voltage transmission line 2 cm in diameter carries a steady current of 960 A. If the conductor is copper with a free charge density of 9.0 x10^28 electrons per cubic meter, how many years does it take one electron to travel the ..
A light spring-gun projectile launcher is mounted on an 0.593 kg air track glider. compute the speed of the air-track glider after the gun is fired
The blue line of the hydrogen emission spectrum has a wavelength of 433.9 nm. Calculate the energy of one photon of this light
You have a great summer job working in a cancer research laboratory. Your team is trying to construct a gas laser that will give off light of an energy that will pass by the skin but be absorbed by cancer tissue.
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