The exchange particle that mediates the strong interaction is the
A. gluon.
B. photon.
C. graviton.
D. neutrino.
A. gluon.
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At the yield stress in a metal,
(a) Dislocation motion starts. (b) The plastic strain is equal to 0.002. (c) Plastic strain begins. (d) The specimen starts to neck.
Now click the second tab (labeled "Terrestrial Planet Temperatures"), then explore what happens as you click the button that allows you to add or remove greenhouse gases. Which terrestrial planet would have its surface temperature the most dramatically changed if its greenhouse gases were removed from its atmosphere?
a. Venus b. Mars c. Mercury d. Earth
The filament in a light bulb has a diameter of 0.050 mm and an emissivity of 1.0. The temperature of the filament is 3000°C. What should be the length of the filament so it will radiate 60 W of power?
The Stefan-Boltzmann constant is 5.670 × 10-8 W/m2 · K4. A) 11 cm B) 9.4 cm C) 8.6 cm D) 7.2 cm E) 5.9 cm
An object of mass m moving at speed v0 strikes an object of mass 2m which had been at rest. The first object bounces backward along its initial path at speed v0 . Is this collision elastic, and if not, what is the change in kinetic energy of the system?
a. The collision is elastic. b. The kinetic energy decreases by mv2. c. The kinetic energy decreases by mv2/2. d. The kinetic energy increases by mv2.