Physics, 17.10.2019 23:30 hippocampus
We have a rod made of a certain metal. the rod’s length is l = 1.2 m and has a circular cross section with radius r= 3.8mm. if we hang the rod vertically and hang a mass of m = 22 kg at its end we find that it is stretched by d = 2.5 mm. (a) using the information given, estimate the young’s modulus for this metal rod, in n/m.
(b) if we know that this metal has a density of 12 g/cm^3, what would be the speed of sound in this metal in m/s?
Answers: 3
Physics, 22.06.2019 03:40
Which types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light? check all that apply. radio waves infrared light microwaves gamma rays visible light x-rays
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Physics, 22.06.2019 12:30
What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery
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Physics, 22.06.2019 15:30
What are the similarities & differences between a thermistor and a light dependent resistor in physics?
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Physics, 22.06.2019 19:20
The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?
Answers: 1
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