The Bernoulli effect causes fast-moving vans on the highway to be drawn together when
A) air speeds up in passing between them.
B) air between them stagnates.
C) they experience lift.
D) all of the above
Answer: A
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Alyssa throws a snowball horizontally from the top of a roof; Ryan throws a snowball straight down from the same point. Once in flight, the acceleration of Alyssa’s snowball is _____ the acceleration of Ryan’s snowball.
A. greater than B. less than C. equal to
Which of the following statements about circumpolar stars is true at all latitudes?
A) They are the stars close to the north celestial pole. B) They always remain above your horizon. C) They make relatively small circles, traveling clockwise around the north celestial pole. D) Like all other stars, they rise in the east and set in the west. E) You cannot see them from the Southern Hemisphere.
A flat circular loop of radius 0.10 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are parallel
A) 0 T ? m2 B) 3.1 × 10-3 T ? m2 C) 5.5 × 10-3 T ? m2 D) 6.3 × 10-3 T ? m2
There are health problems associated with the recycling of dirty bottles
What will be an ideal response?