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A 2.00-m-long air column is open at both ends. Thefrequency of a certain harmonic is 410 Hz, and the frequency of thenext-higher harmonic is 492 Hz. Determine the speed of soundin the air column.
Water ripples are produced by making a cork oscillate up and down at a frequency of 5 Hz. What is the PERIOD of the water ripples
Two protons, each having a speed of 0.940c in the laboratory, are moving toward each other. find the total momentum of the two protons in the laboratory
The armature of an arc generator has 200 turns. Each turn is a rectangular loop with a cross section area of 0.02m^2. What is the magnetic field strength
A 6 µF capacitor carries a charge of 20 µC. If it is connected in a loop with a 5 ? resistor, what is the energy stored in the capacitor 8 µs after the connection is made
A sample of lead has a mass of 45.00 kg and a density of 1.130 104 kg/m3 at 0°C. What is the mass of the sample of lead at 93.00°C
Find the focal length of a concave mirror if an object 12cm from the mirror has a virtual image 2.1 times the object's actual size
Consider an electron in the first Bohr orbit of a hydrogen atom, (a) What is The radius (in meters) of this orbit? (b) What is the total energy (in eV) of the electron in this orbit? (c) How much energy is required to ionize a hydrogen atom when the ..
The distance between two telephone poles is 50.0m. When a 1.00kg bird lands on the telephone wire midway between the poles, the wire sags 0.200m. a) FBD b) How much tension does the bird produce in the wire? Ignore weight of wire
An electric motor rotating a workshop grinding wheel at a rate of 8.90 101 rev/min is switched off. How long does it take for the grinding wheel to stop
if the block is raised back to 100 meters without gaining or losing heat from the environment, What is the blocks temp after it was raised
q1. a sling-thrower puts a stone 0.250 kg in the slings pouch 0.010 kg and then begins to make the stone and pouch move
A 20-m long steel wire (cross-section 1.0 cm^2, Young's modulus 2.0 ´ 10^11 N/m^2), is subjected to a load of 25 000 N. How much will the wire stretch under the load
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