What observations characterize solar maximum?
A) The Sun becomes much brighter.
B) The Sun emits light of longer average wavelength.
C) The Sun rotates faster at the equator.
D) We see many sunspots on the surface of the Sun.
D) We see many sunspots on the surface of the Sun.
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Suppose you have a helium-filled weather balloon above the house. As a storm leaves, the atmospheric pressure rises. Assuming the air temperature is the same, the volume of the balloon will ________.
What will be an ideal response?
Which statement about a single thin lens is correct?
A) A converging lens always produces a real inverted image. B) A diverging lens always produces a virtual inverted image. C) A converging lens sometimes produces a real upright image. D) A diverging lens always produces a virtual upright image. E) A diverging lens produces a virtual upright image only if the object is located between the lens and its focal point.
A measurement of an electron's speed is 2.0 × 106 m/s and has an uncertainty of 10%
What is the minimum uncertainty in the position of the electron? (melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s) A) 0.58 nm B) 0.87 nm C) 1.5 nm D) 0.29 nm E) 4.9 nm
If the average translational kinetic energy of the molecules in one sample of gas has twice the value of that of another sample of gas and the temperature of the first sample of gas is 100°C, what is the temperature of the second sample of gas?
1.100°C 2.50°C 3.0°C 4.-86.6°C