Exhibit 7-1
Three 5.0-kg masses are located at points in the xy plane as shown in the figure.
?
?
Use this exhibit to answer the following question(s).
Refer to . What is the magnitude of the resultant force (caused by the other two masses) on the mass at the origin?
a.
2.7 × 10?8 N
b.
2.1 × 10?8 N
c.
1.8 × 10?8 N
d.
2.4 × 10?8 N
e.
2.9 × 10?8 N
b
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Groombridge 34 is an M1 V star. Based on this information, which of the following are true? I. Groombridge 34 has a surface temperature that is less than the Sun. II. Groombridge 34 has a mass that is greater than that of the Sun. III. Groombridge 34 is less luminous than the Sun. IV. Groombridge 34 is located near the middle of the H-R diagram
a. I & II b. II & IV c. I & IV d. I & III e. II & III
Type II supernovae are believed to occur when the cores of massive stars collapse
a. True b. False Indicate whether the statement is true or false
Since LF,ice = 333 J/g, what is the change in entropy (in cal/K) when 1.00 kg of ice melts?
A. 144 B. 291 C. 312 D. 516 E. 80
Astronaut Skip Parsec visits planet MSU8, which is composed of the same materials as Earth, but has twice the radius. If Skip weighs 800 N on Earth's surface, how much does he weigh on MSU8's surface?
A. 400 N B. 800 N C. 1600 N D. 3200 N