A car is moving with a speed of 32.0 m/s. The driver sees an accident ahead and slams on the brakes, causing the car to slow down with a uniform acceleration of magnitude 3.50 m/s2
How far does the car travel after the driver put on the brakes until it comes to a stop? A) 4.57 m
B) 9.14 m
C) 112 m
D) 146 m
E) 292 m
D
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An M star is hotter than an O star
Indicate whether the statement is true or false
Astronomers can use ____ to measure magnetic fields on the sun
a. helioseismology b. perchloroethylene (C2Cl4) c. neutrino detectors d. a magnetic carpet e. the Zeeman effect
General Questions: You push on box G that is next to box H, causing both boxes to slide along the floor, as shown in the figure. The reaction force to your push is
A. the push of box G on box H. B. the push of box H on box G. C. the push of box G against you. D. the upward force of the floor n box G. E. the acceleration of box G.
A parallel circuit consists of a 100-V DC power source, a 100-? resistor, and a variable resistor of resistance R, which varies from 0 to 100 ?. The current in the circuit is
?
?
A. directly proportional to R. B. inversely proportional to R. C. directly proportional to (100 ? + R). D. inversely proportional to (100 ? + R). E. neither directly nor inversely proportional to R or to (100 ? + R).