Jupiter's intense magnetic field traps high-energy particles from the solar wind and forms a radiation belt around the planet
a. True
b. False
Indicate whether the statement is true or false
True
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A 400-g piece of metal at 120°C is dropped into a cup containing 450 g of water at 15.0°C. The final temperature of the system is 40.0°C. What is the specific heat of the metal, assuming no heat is exchanged with the surroundings or the cup?
A) 1470 J/(kg?K) B) 2830 J/(kg?K) C) 3420 J/(kg?K) D) 3780 J/(kg?K) E) 4280 J/(kg?K)
The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass. An ordinary glass rod and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water. The change in length of the ordinary glass rod will be 3 times the change in length of the Pyrex glass rod
a. True b. False Indicate whether the statement is true or false
A pair of observers moving relative to one another will:
A. always agree on the ordering in time of two events B. always disagree about whether two events are simultaneous C. always disagree about the ordering in time of two events D. sometimes disagree about whether two events are simultaneous
A 2.00 kg pendulum bob on a string 1.50 m long, is released with a velocity of 3.00 m/s when the support string makes an angle of 45.0 degrees with the vertical. What is the tension in the string at the bottom of the swing?
A. 53.5 N B. 49.8 N C. 43.1 N D. 37.5 N E. 30.2 N