Pressure: A person weighing 900 N is standing on snowshoes. Each snowshoe has area 2500 cm2 and has negligible weight. What pressure does this person's weight exert on the snow?
A. 0.18 N/m2
B. 0.36 N/m2
C. 1800 N/m2
D. 3600 N/m2
Answer: C
You might also like to view...
Process of Science: What is Occam's razor?
A) The idea that scientists should prefer the simpler of two models that agree equally well with observations. B) The principle that everyone should agree on a theory before it is considered correct. C) A long, steep cliff on Mercury that may have been produced as the planet contracted as it formed. D) The principal that any theory can be verified by others. E) An unusual implement that Professor Occam uses to remove facial hair.
A very light ping-pong ball moving east at a speed of 4 m/s collides with a very heavy stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east
Which object experiences the greater magnitude impulse during the collision? A) the Ping-Pong ball B) Neither; both experienced the same magnitude impulse. C) the bowling ball D) It is impossible to tell since the actual mass values are not given. E) It is impossible to tell since the velocities after the collision are unknown.
When charges qa, qb, and qc are placed respectively at the corners a, b, and c of a right triangle, the potential at the midpoint of the hypotenuse is 20 V. When the charge qa is removed, the potential at the midpoint becomes 15 V. When, instead, the charge qb is removed (qa and qc both in place), the potential at the midpoint becomes 12 V. What is the potential at the midpoint if only the charge
qc is removed from the array of charges? a. 8.0 V b. 5.0 V c. 7.0 V d. 13 V
Bats can detect small objects such as insects that are of a size on the order of a wavelength. If bats emit a chirp at a frequency of 60 kHz and the speed of soundwaves in air is 330 m/s, what is the smallest size insect they can detect?
a. 1.5 mm b. 3.5 mm c. 5.5 mm d. 7.5 mm e. 9.8 mm