____ is the point in Earth's orbit where Earth is closest to the Sun
a. Aphelion
b. Perihelion
c. Precession
d. The winter solstice
e. a and d
b
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Energy and Mass: Consider a student whose mass is 70 kg. If all his mass were converted to electrical energy, for how many years could he keep a 100-W light bulb burning? (c = 3.0 × 108 m/s)
What will be an ideal response?
The 4d subshell field can contain how many electrons?
A) 7 B) 14 C) 4 D) 10 E) 2
A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 24 m/s west, and the acceleration of the car has components of 2.4 m/s2 east and 1.8 m/s2 south. What is the radius of the circle?
a. 0.24 km b. 0.19 km c. 0.32 km d. 0.14 km e. 0.27 km
The longer the wavelength, the bluer and brighter the star appears
a. True b. False Indicate whether the statement is true or false