The Oort Cloud is thought to be
A) the cloud of gas and dust from which our solar system formed.
B) a cloud of debris that occasionally encounters the Earth, causing a meteor shower.
C) the spherical cloud of comets and some larger icy bodies surrounding the outer solar system.
D) a cloud of asteroids moving between the orbits of Mars and Jupiter.
E) the material in the ecliptic plane that creates the zodiacal light.
C
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A circular ring of charge of radius b has a total charge q uniformly distributed around it. Choose the magnitude of the electric field at the center of the ring
1. 0 2. keq/b2 3. keq2/b2 4. keq2/b 5. None of these answer choices is correct.
A heat pump takes in energy from a 250 K thermal reservoir outside a house and discharges 140 J of energy into a 350 K thermal reservoir inside a house. What is the minimum amount of work needed to make the pump work?
A. 67.0 J B. 50.0 J C. 40.0 J D. 37.0 J
A 25-L container holds ideal hydrogen (H2) gas at a gauge pressure of 0.25 atm and a temperature of 0°C
What mass of hydrogen gas is in this container? The ATOMIC mass of hydrogen is 1.0 g/mol, the ideal gas constant is R = 8.314 J/mol ? K = 0.0821 L ? atm/mol ? K, and 1.00 atm = 101 kPa. A) 1.4 g B) 2.8 g C) 4.2 g D) 5.6 g E) 6.3 g
Sedimentary definition
What will be an ideal response?