Rank the following kinds of waves according to their speeds from fastest to slowest:
(a) gamma rays
(b) microwaves
(c) radio waves
(d) visible light
(e) x-rays
1.c > b > d > e > a
2.b > c > e > b > a
3.a > e > d > b > c
4.e = a = c = d = b
4
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A boat has an initial velocity of 2 m/s in the y direction on a stream which is moving in the x direction at 1 m/s. The boat is accelerating in its direction of motion at 1 m/s2. What is the acceleration of the boat (in m/s2) relative to the water?
A.
B.
C.
+ 
D.
? E.
Consider a very small hole in the bottom of a tank 20.0 cm in diameter filled with water to a height of 50.0 cm. Find the speed at which the water exits the tank through the hole
A) 3.13 m/s B) 9.80 m/s C) 31.8 m/s D) 34.9 m/s
Two cars are traveling at the same speed and hit the brakes at the same time. One car has double the deceleration of the other. By what factor does the distance required to stop that car compare with that for the other car?
What will be an ideal response?
A stonecutter's chisel has an edge area of 0.50 cm2 . If the chisel is struck with a force of 45.0 N, what is the pressure exerted on the stone?
a. 9.0E+2 Pa b. 9.0E+3 Pa c. 9.0E+4 Pa d. 9.0E+5 Pa e. 4.5E+5 Pa