The water that has been detected on the Moon lies at its ________
Fill in the blank(s) with correct word
poles
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Science is a body of knowledge that
A) describes order in nature. B) is an ongoing human activity. C) condenses knowledge into testable laws. D) all of the above E) none of the above
A wire of thickness d = 5 mm is tightly wound 200 times around a cylindrical core to form a solenoid. A current I = 0.1 A is sent through the wire. What is the the magnetic field on the axis of the solenoid?
A) 6.6 × 10-5 T B) 2.5 × 10-5 T C) 1.3 × 10-5 T D) 3.6 × 10-5 T E) 9.8 × 10-5 T
Why does retrograde motion of the planets happen?
A) Mars follows an orbital path with occasional loops in it. B) Every planet farther from the Sun that the Earth orbits faster than Earth. C) Earth's rotation rate changes as the force of gravity from the Sun varies. D) The planets speed up and slow down at random times during their orbit. E) When Earth overtakes a planet in its orbit, the planet will appear to move backwards for a short time
For which of the following would it be most advisable to utilize a system that is damped?
1.within the pendulum of a grandfather clock 2.within shock absorbers 3.within the bouncing mechanism for a trampoline 4.within a buoy that floats on the ocean