Two kilograms of water at 100°C is converted to steam at 1 atm. Find the work done (in J). (The density of steam at 100°C is 0.598 kg/m3.)
a. 3.4 × 10^5
b. 1.2 × 10^5
c. 4.6 × 10^4
d. 2.1 × 10^4
e. 3.4 × 10^4
a
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A charged particle moving perpendicular to a uniform magnetic field will follow a circular path with radius r = mv/Bq. If the magnetic field is doubled, what happens to the time that it takes for the particle to complete one loop around its path?
1.It doubles. 2.It quadruples. 3.It halves. 4.It stays the same.
You drive 6.00 km at 50.0 km/h and then another 6.00 km at 90.0 km/h. Your average speed over the 12.0 km drive will be
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A) 490 m/s B) 530 m/s C) 390 m/s D) 440 m/s E) 405 m/s