A 75-kg swimmer dives horizontally off a 250-kg raft initially at rest. If the diver's speed immediately after leaving the raft is 2 m/s, what is the corresponding raft speed?
a. 0.2 m/s
c. 0.6 m/s
b. 0.3 m/s
d. 4.0 m/s
C
Physics & Space Science
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From full moon to third quarter moon takes about a week
Indicate whether the statement is true or false
Physics & Space Science
If the mass of Mars is 0.107 times that of Earth, and its radius is 0.530 that of Earth, estimate the gravitational acceleration g at the surface of Mars. (gearth = 9.80 m/s2)
a. 2.20 m/s2 b. 3.73 m/s2 c. 4.20 m/s2 d. 5.50 m/s2
Physics & Space Science
The common unit of radiation absorbed dosage is the ______________
Fill in the blank(s) with correct word
Physics & Space Science
Which of the following devices makes use of an electromagnet?
a. relay c. both A and B b. motor d. None of the above.
Physics & Space Science