What is the net force on a 10-kg solid steel sphere falling in air at terminal speed?
A. 980 N
B. 200 N
C. 98 N
D. 49 N
E. Some value other than those given above.
Answer: E
You might also like to view...
Compared to a 5-inch prime focus reflector, a 5-inch Newtonian reflector will:
A) have more light gathering power. B) have the same light gathering power. C) be easier to build. D) will have more chromatic aberration. E) will have a larger hole in the center of its mirror.
The objective lens and the eyepiece of a microscope have focal lengths of 4.0 mm and 25 mm, respectively
The objective produces a real image 30 times the size of the object, with the final image viewed at infinity. The near point of the microscope user is at 25 cm. What is the magnitude of the overall magnification of the microscope? A) 250 B) 300 C) 350 D) 400 E) 450
A reversible engine takes in 555. Joules per second and exhausts 482. watts
(a) How much power does it produce? (b) What is its efficiency? (c) If operated in reverse as a refrigerator, what would be its COP?
A car travels around an unbanked highway curve (radius 0.15 km) at a constant speed of 25 m/s. What is the magnitude of the resultant force acting on the driver, who weighs 0.80 kN?
a. 0.87 kN b. 0.34 kN c. 0.80 kN d. 0.00 kN e. 0.67 kN