A river flows due east at 2.0 m/s. A boat crosses the 300 m-wide river by maintaining a constant velocity of 10 m/s due north relative to the water. If no correction is made for the current, how far downstream does the boat move by the time it reaches the far shore?
a. 6 m
c. 60 m
b. 30 m
d. 90 m
C
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The pressure in a gas is the result of the momentum transfer that occurs when the molecules bounce from the walls of the container
Indicate whether the statement is true or false
Slanting Surfaces Without Friction: A 7.5-kg stone moves up frictionless hill that slopes upward at 41° above the horizontal. If the stone has an initial velocity of 8.5 m/s at the bottom, how far (as measured along the surface of the hill) will it go before stopping?
Fill in the blank(s) with the appropriate word(s).
Different colors correspond to electromagnetic waves of different
A) frequencies. B) speeds. C) amplitudes. D) weights. E) intensities.
You drive your car 5.0 km due East at 35 km/hr, and suddenly realize that you forgot your wallet. So, you return home, driving West at 40 km/hr, and upon arrival spend 10 minutes looking for it, and finally go back on the road for a total of 57.0 km due East. If your average velocity was 40 km/hr for the whole journey, what was your average speed on your last leg.
A. 49 km/hr B. 40 km/hr C. 45 km/hr D. 56 km/hr