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Two steel guitar strings have the same length. String A has a diameter of 0.59 mm and is under 450.0 N of tension. String B has a diameter of 1.2 mm and is under a tension of 800.0 N. Find the ratio of the wave speeds, va/vb, in these two strings.
A flat sheet of crystalline quartz has a thickness of 3.7cm. It is on top of a flat sheet of diamond that has a thickness of 2.6cm. Light strikes the crystalline quartz vertically and travels through it and then through the diamond.
The circular top of a can of soda has a radius of 0.029m. The pull-tab has an area of 4.13 10-4m2. The absolute pressure of the carbon dioxide in the can is 1.4 x10^5Pa. Find out the force that this gas generates.
Transverse waves travel with a speed of 18 m/s in a string under tension of 5 N. What tension is required for a wave speed of 27 m/s in the same string.
Find out an acceleration of mass and tension in the string
On a certain amusement park ride, passengers are seated in a horizontal circle of radius 7.5m. the seats begin to rotate from rest and are uniformly accelerated for 21 seconds to a most rotational speeds of 1.4 rad/s.
The aurora is caused when electrons and protons, moving in earth's magnetic field of 5x10^-5 T, collide with molecules of the atmosphere and cause them to glow. What is the radius of the circular orbit for (a) an electron with speed 1.0×10^6 and (b) ..
Two point charges have a total charge of 515 µC. When placed 1.15 m apart, the force each exerts on the other is 24.4 N and is repulsive. What is the charge on each.
Quarks carry spin 1/2. Three quarks bind together to make a baryon (such as the proton or neutron); two quarks (or more precisely a quark and an anti-quark) bind together to make a meson (for example the pion or the kaon). Suppose the quarks are i..
A rectangular container measuring 24 cm 48 cm 55 cm is filled with water. What is the mass of volume of water in kilograms.
A damped mass-spring system oscillates at 140 Hz. The time steady of the system is 2.0 s. At t = 0, the amplitude of oscillation is 8.6 cm and the energy of the oscillating system is after that 86 J.
A fireman 44 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 22° above the horizontal. If the speed of stream as it leaves the hose is 40m/s, at what height will stream of water strike the buil..
A binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This means that the masses of two stars are equal. Suppose the orbital speed of each star is 285 km/s and the orbital period of each..
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