Estimate the acceleration of the Earth relative to the Sun in m/s²
1.less than 0.003
2.between 0.003 and 0.03
3.between 0.03 and 0.3
4.between 0.3 and 3
5.between 3 and 30
6.between 30 and 300
7.between 300 and 3,000
8.between 3,000 and 30,000
9.more than 30,000
10.Impossible to determine
2
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The discovery of a supernova by Tycho Brahe in 1572 contradicted the commonly held belief that the universe was
A) unchanging B) spherical C) infinite D) perfect
During an isothermal process, 5.0 J of thermal energy via the process of heating is removed from an ideal gas. What is the work done on the gas in the process?
A) 0 J B) 5.0 J C) -5.0 J D) -10 J
A wire (mass = 50 g, length = 40 cm) is suspended horizontally by two vertical wires which conduct a current I = 8.0 A, as shown in the figure. The magnetic field in the region is into the paper and has a magnitude of 60 mT. What is the tension in either wire?
a.
0.15 N
b.
0.68 N
c.
0.30 N
d.
0.34 N
e.
0.10 N
Energy is released during a nuclear reaction due to a conversion between mass and energy. Mass is not conserved. The initial and final amounts are different. If a total of 1.0 gram of mass is "missing", how much energy has been released?
a. 9.0 × 10^11 J b. 9.0 × 10^17 J c. 9.0 × 10^15 J d. 9.0 × 10^13 J e. 9.0 × 10^16 J