A race car moving with a constant speed of 60 m/s completes one lap around a circular track in 50 s. What is the magnitude of the acceleration of the race car?
a. 8.8 m/s2
b. 7.5 m/s2
c. 9.4 m/s2
d. 6.3 m/s2
e. 5.3 m/s2
b
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Regarding the Earth and a cloud layer 800 m above the Earth as the "plates" of a capacitor, calculate the capacitance if the cloud layer has an area of 1.0 km2 . If an electric field of 2.0 × 10^6 N/C makes the air break down and conduct electricity (lightning), what is the maximum charge the cloud can hold?
A charge of 25 nC is uniformly distributed along a circular arc (radius = 2.0 m) that is subtended by a 90-degree angle. What is the magnitude of the electric field at the center of the circle along which the arc lies?
a. 81 N/C b. 61 N/C c. 71 N/C d. 51 N/C e. 25 N/C
____________ is the smallest of the large moons of Uranus and its surface has features called ovoids. These ovoids may have been formed by the upheaval of material by convection in the interior
Fill in the blank(s) with correct word
Estimate the heat transfer from the fin shown in Figure 2-65. Write the necessary node equations and then solve for the temperatures. Assume the fin is aluminum.
