Equilibrium: A 10-kg sign is held by two ropes as shown in the figure. What is the tension on rope A?
A. 44 N
B. 69 N
C. 72 N
D. 88 N
E. 98 N
Answer: D
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Which of the following processes did not contribute gas to Earth's secondary atmosphere?
a. volcanism b. accretion c. oxidation d. comet impacts e. All of the above contributed gases to Earth's secondary atmosphere.
A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, a pulse travels down the wire and returns 7.84 ms later, having reflected off the lower end
The stone is heavy enough to prevent the lower end of the wire from moving. What is the mass m of the stone? A) 8.90 kg B) 23.1 kg C) 35.6 kg D) 227 kg E) 349 kg
In the diagram below, what is the diameter of Jupiter?
a. about 7.0 x 104 km
b. about 7.0 x 105 km
c. about 1.4 x 104 km
d. about 1.4 x 105 km
e. about 3.5 x 106 km
One source of the energy for volcanism and plate tectonics is radioactivity in the Earth's interior
Indicate whether the statement is true or false