Which statement about Pluto is not true?
A) Its surface temperature is very cold.
B) It is made mostly of rock and ice.
C) It is both smaller and less massive than Earth.
D) It is the most massive object in the Kuiper belt.
E) It was visited by the New Horizons spacecraft in 2015.
D) It is the most massive object in the Kuiper belt.
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What will be an ideal response?
A vertical spring has a mass hanging from it, which is displaced from the equilibrium position and begins to oscillate. At what point does the system have the least potential energy?
A) at the highest point B) at one-fourth of the distance between the highest point and lowest point C) at the lowest point D) at the point where the spring is unstretched E) at the equilibrium point
A 10 kg ball weighs 98 N in air and weighs 75 N when submerged in water. The buoyant force of the water on the ball is
A. 32 N. B. 30 N. C. 24 N. D. 23 N. E. 19 N.
Which of the following is a property of a Josephson junction?