The Voyager I and II spacecraft visited the Jovian planets in the 1980s. When will they reach the distances of the nearest stars?
A) in our lifetime
B) in our children's lifetime
C) thousands of years from now
D) in our grandchildren's lifetime
E) hundreds of thousands of years from now
E
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A possible spike in the number of impacts in the inner solar system about 4 billion years ago may have mostly likely been due to
A) the passage of another star close to the Sun B) planetary migration caused by the shifting of the orbits of the Jovian planets C) the giant collision that formed the Moon D) the breakup a planet to form the asteroid belt
A certain speed boat weighs 4,900 N. It can accelerate from 0 to 20 m/s in 5 seconds. (a) What is the mass of the boat? (b) What is the acceleration? (c) How large is the net force acting on the boat?
The distance from Earth to the Sun is about 93 million miles. How many times this distance is the size of the Milky Way galaxy?
a. Roughly 10 million times. b. Roughly 10 thousand times. c. Roughly 10 billion times. d. Roughly 100 billion times.
Four unequal resistors connected in series have same current but different voltages
Indicate whether the statement is true or false