Which of the following does not travel at light speed?

A) light
B) radio waves
C) X-rays
D) infrared waves
E) Actually all of these travel at light speed.


E

Physics & Space Science

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Earth's orbit is nearly circular, varying by only a few percent in distance from the Sun over one orbital period

a. True b. False Indicate whether the statement is true or false

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Two identical nuclei of mass 18 u are made to unite to make a single nucleus of mass 36 u. What is the radius of the result of this fusion?

A) 4.5 fm B) 4.0 fm C) 6.3 fm D) 7.2 fm

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A 3.2-L volume of neon gas (Ne) is at a pressure of 3.3 atm and a temperature of 330 K

The atomic mass of neon is 20.2 g/mol, Avogadro's number is 6.022 × 1023 molecules/mol, and the ideal gas constant is R = 8.314 J/mol · K = 0.0821 L · atm/mol · K. The mass of the neon gas is closest to A) 7.9 × 10-3 kg. B) 4.6 × 10-3 kg. C) 3.8 kg. D) 7.8 kg. E) 7.8 × 102 kg.

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It is correct to say that impulse is equal to

A) momentum. B) the change in momentum. C) the force multiplied by the distance the force acts. D) all of the above E) none of the above

Physics & Space Science