A 905-g meteor impacts the earth at a speed of 1629 m/s. If all of its energy is entirely converted to heat in the meteor, what will be the resulting temperature rise of the meteor, assuming it does not melt? The specific heat for the meteor material
is 472 J/kg?K, which is about the same as that of iron.
A) 2,540,000°C B) 11,700°C C) 2810°C D) 3.10°C
C
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Newer neutrino detectors have confirmed the total number of solar neutrinos does in fact match predictions
Indicate whether the statement is true or false
Pluto is different from the other outer planets in all of the following ways except which one?
A) Its orbit is not very close to being circular. B) It has only one moon. C) Its surface temperature is very cold. D) It is made mostly of ices. E) It doesn't have rings.
The figure below shows a planet traveling in a counterclockwise direction on an elliptical path around a star located at one focus of the ellipse. When the planet is at point A,
a.
its speed is decreasing.
b.
its angular momentum is increasing.
c.
the gravitational force does no work on the planet.
d.
all of the above are correct.
e.
none of the above is correct.
A charged capacitor is connected to an inductor to form an LC circuit with a frequency of oscillation f = 1.6 Hz. At time t = 0 the capacitor is fully charged
At a given instant later the charge on the capacitor is measured to be Q = 3 ?C and the current in the circuit is equal to 75 ?A. What is the maximum charge of the capacitor? A) 6 ?C B) 10 ?C C) 8 ?C D) 2 ?C E) 4 ?C