A vector in the xy-plane has an x component of -7.50 units. What must be the y component of this vector so that its magnitude is 10.0 units. (Note: There are two possible answers.)
What will be an ideal response?
+6.6 units and -6.6 units
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Snell's Law: Light enters air from water. The angle of refraction will be
A. greater than the angle of incidence. B. equal to the angle of incidence. C. less than the angle of incidence.
How does the mass of Jupiter compare with that of the other planets?
A) It is slightly larger and more massive than Saturn. B) It is similar to that of the Earth and Venus. C) It is twice as massive as all other planets combined. D) It is almost as massive as Saturn. E) It is about a tenth the mass of the Sun.
A catcher arranges to catch a baseball dropped from a height 50 m above his glove. However, his friends substitute a soft 250 g red grapefruit, so that it will smash apart when he catches it. His glove stops the grapefruit in 0.010 s. What force does the glove exert on the grapefruit?
A. 0.078 3 N B. 783 N C. 2 450 N D. 24 500 N E. 78 300 N
What does the Q represent in the stream discharge equation
What will be an ideal response?