The Kuiper Belt is located just beyond Neptune out to _____
A) 30 AU or less
B) 40 AU or less
C) 50 AU or more
D) 60 AU or more
C
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Only about three comets per year plunge into the Sun and are destroyed
a. True b. False Indicate whether the statement is true or false
Which of the state vectors below is not physically equivalent to 
?
E. They are all equivalent.
Magnetic Field of a Current Loop: A single current-carrying circular loop of radius R is placed next to a long, straight wire, as shown in the figure. The current I in the wire flows to the right. In which direction must current flow in the loop to produce a net magnetic field of zero at its center?
A. counterclockwise B. clockwise C. It could be either clockwise or counterclockwise. D. The current in the loop should be zero.
Power: In a physical fitness program, a woman who weighs 510 N runs up four flights of stairs in 22 s. Each flight rises 3.1 m. (1 hp = 746 W)(a) What is her total change in potential energy?(b) What was the minimum average power (in watts) that she expended during the 22 s?(c) What horsepower motor would be required to generate the same power?
What will be an ideal response?