If your answer doesn\'t match a multiple choice option, try using g=10m/s/s. 1.
ID: 1307686 • Letter: I
Question
If your answer doesn't match a multiple choice option, try using g=10m/s/s. 1.
1. Pressure is defined as:
2. Which of the following can be converted to Joules?
3. The average speed of an object is defined to be the
4. A calorie is defined to be the amount of heat required to raise the temperature of
5. A concave (diverging) lens has a focal length of -10 cm. Where is the image located when the object is placed 30 cm from the lens?
6. Suppose you look out a tenth-floor window and see a ball falling at 15 m/s. How fast will the ball be falling 1 s later?
7. Light in air strikes water at an angle of 30?. At what angle is it refracted (bent)? Use an index of refraction of 1.33.
Explanation / Answer
1) force/area
2) kilowatt-hour
3) distance it travels divided by the time it takes
4) 1 gram of water by 1 ?C.
5) 7.5 cm on the same side as the object
6) 25 m/s
7) 22 degrees
8) 60 J
9) 400 nm
10) F = m a
11) left then right
12) The acceleration is 9.8 m/s^2 down at all times
13) 1 Jouls
14) R = R1 + R2 = 57 + 57 = 114 ohms
i = V/R = 12/114 = 0.105 A
15) E = F/q = ma/q = 1.67e-27*1e15/1.6e-19 = 1.04E7 N/C
b) B = F/qv = m a/qv = (1.67e-27*1e15)/(1.6e-19*2e6) = 5.23 T
16) E = k q/r^2 = 9e9*1/(0.5*0.5) = 3.6E10 N/C
17) density is less than the density of the fluid
18) is very fast, but not infinite
19) 1,000,000
20) 6 N
21) 2400 N
22) 2 s
23) 126 cal
24) 0.24 m
25) 45 m
26) 20 cm
27) 90 degrees
28) 4 atm
29) 3 meters
30) 7 volts