Kinetic Energy: What is the minimum energy needed to change the speed of a 1600-kg sport utility vehicle from 15.0 m/s to 40.0 m/s?
A. 1.10 MJ
B. 10.0 kJ
C. 20.0 kJ
D. 40.0 kJ
E. 0.960 MJ
Answer: A
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Center of Mass: A 30-kg child stands at one end of a floating 20-kg canoe that is 5.0-m long and initially at rest in the water. The child then slowly walks to the other end of the canoe. How far does the canoe move in the water, assuming water friction is negligible?
A. 1.0 m B. 2.0 m C. 3.0 m D. 4.0 m E. 5.0 m
A 2.0-?F capacitor that is initially uncharged is charged through a 50-k? resistor. How long does it take for the capacitor to reach 90% of its full charge?
A) 0.90 s B) 2.2 s C) 0.23 s D) 2.3 s
The cratered surfaces of Saturn's moons may look like our moons, but in reality they are made chiefly of ________
Fill in the blank(s) with correct word
The wavelength of a certain laser is where Express this wavelength in nanometers
A) 3.5 × 102 nm B) 3.5 × 103 nm C) 3.5 × 101 nm D) 3.5 × 104 nm