Gamma rays are emitted when high speed electrons decelerate as they are smashed into a metal target
a. True
b. False
Indicate whether the statement is true or false
False
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The period of a satellite circling planet Nutron is observed to be 84 s when it is in a circular orbit with a radius of 8.0 × 10^6 m. What is the mass of planet Nutron?
a. 6.2 × 10^28 kg b. 5.0 × 10^28 kg c. 5.5 × 10^28 kg d. 4.3 × 10^28 kg e. 3.7 × 10^28 kg
At Jupiter's very center is a core of
a. heavy element (molten rock and iron) core b. helium c. hydrogen d. Both A and B
A parallel-plate capacitor is disconnected from a battery, and the plates are pulled a small distance further apart. Does DV increase, decrease, or stay the same?
1.increase 2.decrease 3.remains the same
A string is stretched with a tension of 100 N. The string has a length of 2.00 meters. The velocity of wave propagation along the string is 220 m/s. The mass of the string is
A. 3.75 gm. B. 4.13 gm. C. 4.66 gm. D. 5.21 gm. E. 5.74 gm.