A student weighing 200 N climbs a flight of stairs 9.0 m high in 4 s. What power is required to perform this task?
a. 1800 J
b. 800 J
c. 1800 W
d. 800 W
e. 450 W
e
Physics & Space Science
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Pseudoscience is best characterized as being
A) new age. B) an alternate view to be taken seriously. C) fake. D) all of the above
Physics & Space Science
What tool did Galileo use to prove that the Moon was not perfect?
a. microscope b. telescope c. quadranoscope d. thermometer e. anemometer
Physics & Space Science
The vertical displacement of a string is given by y(x,t) = (6.00 mm) cos[(3.25 m-1)x – (7.22 s-1)t]. What is the speed of the wave?
A) 0.450 m/s B) 1.41 m/s C) 2.22 m/s D) 3.16 m/s E) 23.5 m/s
Physics & Space Science
A person in a rocket ship traveling past the earth at a speed of 0.500c fires a laser gun in the forward direction. With what speed does an observer on Earth measure for the light pulse?
What will be an ideal response?
Physics & Space Science