Since its density is similar to ours, we think that Venus too has a core of ________
Fill in the blank(s) with correct word
iron
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Explain the large-impact hypothesis
What will be an ideal response?
Object A emits most strongly at 400 nm, while object B emits most strongly at 800 nm. What can we say about their relative temperatures?
A. A's temperature is the same as B's. B. B's temperature is twice as high as A's. C. A's temperature is twice as high as B's. D. Nothing. Temperature is related to brightness, not emitted wavelength.
A player hits a ball with a bat. If action is the force of the bat against the ball, reaction is the
A) air resistance on the ball. B) weight of the ball. C) force that the ball exerts on the bat. D) grip of the player's hand against the ball. E) weight of the bat.
Two identical ladders are 3.0 m long and weigh 600 N each. They are connected by a hinge at the top and are held together by a horizontal rope, 1.0 m above the smooth floor forming a symmetric "A" arrangement
The angle between the ladders is 60° and both ladders have their center of gravity at their midpoint. What is the tension in the rope? A) 240 N B) 300 N C) 220 N D) 260 N E) 280 N