Car A is traveling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind car B when the driver of car A accelerates his car with a uniform forward acceleration of 2.40 m/
How long after car A begins to accelerate does it take car A to overtake car B? A) 5.50 s
B) 12.6 s
C) 19.0 s
D) 316 s
E) Car A never overtakes car B.
C
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A solid sphere, solid cylinder, and a hollow pipe all have equal masses and radii and are of uniform density. If the three are released simultaneously at the top of an inclined plane and roll without slipping, which one will reach the bottom first?
A) solid sphere B) hollow pipe C) solid cylinder D) They all reach the bottom at the same time.
Consider two diffraction gratings with the same slit separation, the only difference being that one grating has 3 slits and the other 4 slits. If both gratings are illuminated with a beam of the same monochromatic light
A) the grating with 3 slits produces the greater separation between orders. B) the grating with 4 slits produces the greater separation between orders. C) both gratings produce the same separation between orders. D) both gratings produce the same separation between orders, but the orders are better defined with the 4-slit grating.
Most mutations make no difference, but some mutations are fatal, killing the afflicted organisms before they can reproduce
Indicate whether the statement is true or false
Very large capacitors have been considered as a means for storing electrical energy. If we constructed a very large parallel-plate capacitor of plate area 1.85 m2 using paper (? = 3.7) of thickness 1.5 mm as a dielectric, how much electrical energy would it store at a plate voltage of 1 500 V? (?0 = 8.85 × 10^?12 C2/N?m2)
a. 0.045 J b. 9.1 J c. 910 J d. 1 800 J e. 3 600 J