A 50-kg satellite circles planet Cruton every 5.6 h in an orbit with a radius of 12 × 10^6 m. What is the magnitude of the gravitational force on the satellite by planet Cruton?
a. 63 N
b. 58 N
c. 68 N
d. 73 N
e. 50 N
b
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An element with atomic number 88 goes through alpha decay. Its atomic number is now
A) 80. B) 82. C) 84. D) 86. E) 88.
An 8000-kg aluminum flagpole 100-m high is heated by the Sun from a temperature of 10°C to 20°C. Find the increase in internal energy (in J) of the aluminum. (The coefficient of linear expansion is 24 × 10?6 (°C)?1, the density is 2.7 × 103 kg/m3, and the specific heat of aluminum is 0.215 cal/g?°C.)
A. 7.2 × 105 B. 7.2 × 107 C. 7.2 × 103 D. 7.2 × 101 E. 7.2 × 102
There are no auroras on Venus because it
A) is too hot. B) lacks atmospheric oxygen. C) lacks a strong magnetic field. D) lacks strong winds.
Much settlement in early American history was near rivers and streams so people could take advantage of water power to run factories
What will be an ideal response?