The lowest temperature is called ______________
Fill in the blank(s) with correct word
absolute zero
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Coulomb's Law: Three point charges are placed on the x-axis, as follows. A charge of +2.0 ?C is at the origin, a charge of -2.0 ?C is at x = 50 cm, and a charge of +4.0 ?C is at x = 100 cm. What are the magnitude and direction of the electrostatic force on the charge at the origin due to the other two charges? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
What will be an ideal response?
The number of nodes, including the end points, in a standing wave that is three wavelengths long is
A) 4. B) 5. C) 6. D) 7. E) none of the above
A certain photon, after being scattered from a free electron that was at rest, moves at an angle of 120° with respect to the incident direction
If the wavelength of the incident photon is 0.6110 nm, what is the kinetic energy of the recoiling electron? (melectron = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s) A) 1.5 × 10-18 J B) 1.9 × 10-18 J C) 3.1 × 10-18 J D) 4.3 × 10-18 J E) 5.2 × 10-18 J
What is basalt?
A) any substance that evaporates easily and is a gas, liquid, or ice on Earth B) a type of rock that makes relatively low-viscosity lava C) a type of metal that tends to create stratovolcanoes when eruptions occur D) a type of mineral that is the main ingredient of sea salt E) another name for lava