An apple falls from an apple tree growing on a 20° slope. The apple hits the ground with an impact velocity of 16.2 m/s straight downward. What is the component of the apple's impact velocity parallel to the surface of the slope?
A) 5.5 m/s
B) 8.7 m/s
C) 12 m/s
D) 15 m/s
A
You might also like to view...
An iron nail is more strongly attracted to the
A) north pole of a magnet. B) south pole of a magnet. C) either of these D) neither of these
Figure OQ31.2 is a graph of the magnetic flux through a certain coil of wire as a function of time during an interval while the radius of the coil is increased, the coil is rotated through 1.5 revolutions, and the external source of the magnetic field is turned off, in that order. Rank the emf induced in the coil at the instants marked A through E from the largest positive value to the
largest-magnitude negative value. In your ranking, note any cases of equality and also any instants when the emf is zero.
The surface of the Sun has a temperature of about 5800 K. If the radius of the Sun is 7 × 10^8 m, determine the power output of the sun. (Take e = 1, and s = 5.67 × 10^-8 W/m2 • K4)
a. 3.95 × 10^26 W c. 9.62 × 10^28 W b. 5.17 × 10^27 W d. 6.96 × 10^30 W
A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer annually?
A) $116.80 B) $1168.00 C) $14.60 D) $16.80 E) $146.00