The output of a generator is 440. V at 20. A. It is to be transmitted on a line with resistance of 0.60 ?. To what voltage must the generator output be stepped up with a transformer
if the power loss in transmission is not to exceed 0.01% of the original power?
A) 4.4 kV
B) 4.4 × 105 V
C) 44.5 kV
D) 22. kV
E) 72.7 kV
C
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Projectile Motion: A projectile is fired from the edge of a cliff as shown in the figure. The initial velocity components are 940 m/s (horizontal) and 96 m/s (vertical). The projectile reaches maximum height at point P and then falls and strikes the ground at point Q. How high is point P above point Q, assuming no air resistance?
A. 470 m B. 490 m C. 45,000 m D. 940 m E. 90,000 m
Other things being equal, the pole-vaulter having the greatest ________ energy prior to going into the jump should jump the highest.
Fill in the blank(s) with the appropriate word(s).
Which of the following is an outer planet?
A. Mars B. Jupiter C. Earth D. Venus
A solid nonconducting sphere (radius = 12 cm) has a charge of uniform density (30 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the center of the sphere
a. 22 N/C b. 49 N/C c. 31 N/C d. 87 N/C e. 26 N/C