What is the period of a satellite circling Mars 100 km above the planet's surface? The mass of Mars is 6.42 × 1023 kg, its radius is 3.40 × 106 m, and G = 6.67 x 10-11 N•m2/kg2
A) 1.75 hours
B) 1.25 hours
C) 1.15 hours
D) 1.00 hours
E) 1.45 hours
A
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Which of the following is an example of convection?
a. Heat radiates from a planet into space. b. Heat travels from atom to atom, from inside a planet to the outside. c. Hot material inside a planet rises, and cool material sinks toward the center. d. Metal conducts energy throughout Earth's core.
Process of Science: Given that Einstein's equations naturally showed the possibility of an accelerating Universe, why have astronomers only recently found strong evidence for dark energy?
What will be an ideal response?
Conservation laws can be used even when the details of what is occurring inside a system aren't known
a. True b. False Indicate whether the statement is true or false
An object with mass m and moment of inertia I is spinning with an angular momentum L. Its kinetic energy is:
a. 0.5I2/L. c. 0.5L2/m. b. 0.5L2/I. d. 0.5I2/m.