According to modern scientific dating techniques, approximately how old is the solar system?
A) 10,000 years
B) 4.6 million years
C) 4.5 billion years
D) 14 billion years
C
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Nellie hangs from a pair of ropes at an angle. Tension in the ropes depends on the
A) length of the ropes. B) angle of the ropes. C) both of these D) neither of these
The battery powering a light bulb is disconnected. As the light bulb's heat dissipates, how will the resistance and current change?
1.The resistance will decrease and the current will increase. 2.The resistance will increase and the current will be zero. 3.The resistance will increase and the current will decrease. 4.The resistance will decrease and the current will be zero.
How do we know the total mass of the Milky Way Galaxy that is contained within the Sun's orbital path?
A) by counting the number of stars visible in this region of the galaxy B) by estimating the amount of gas and dust in between the stars C) by using the law of conservation of angular momentum to calculate the orbital speeds of nearby stars D) by applying Newton's version of Kepler's third law to the orbits of the Sun or other nearby stars around the center of the Galaxy
In filament _________, the reinforcing material is wrapped around a rotating mandrel of the desired shape.
Fill in the blank(s) with the appropriate word(s).