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Approximately how many times bigger than the Earth is the Sun? What is plasma in the context of the Sun? Give the net reaction of the proton-proton chain. What two forces are balanced inside a star to keep it stable?
In the figure, a 4.0 kg block slides along a track from one level to a higher level after passing through an intermediate valley. The track is frictionless until the block reaches the higher level. There a frictional force stops the block in a distan..
The length of a spaceship is 56 meter when it is at rest. While it travels past you at close to the speed of light you measure its length to 41 meter. Determine what is the speed of the spaceship
Physicians use electroencephalograms (EEGs) to study electrical oscillations in the human brain. So-called beta oscillations, whose enhancement has been linked to alcoholism, have frequencies from 12 to 30 Hz . What's the corresponding range in perio..
I know the efficiency of Carnot engine is 1- (T_c/T_h) and the thermal efficiency of a heat engine is 1- (Q_c/Q_h). I'm not sure how to set this up
A galvanometer with a coil resistance of 11.0 and the full-scale current of 0.150 mA is used with a shunt resistor to make an ammeter. The ammeter registers the maximum current of 4.00 mA. Find the equivalent resistance of the ammeter.
Describe why conduction band electrons are typically found at the bottom of the conduction band whereas holes are found at the top of the valence band.
A rock is thrown vertically upward from ground level at time t = 0. What is the height of the tower
A railroad freight car weighing 42 tons and traveling 10 m/s overtakes another freight car weighing 20 tons and traveling at 4.5 m/s in the same direction as the first. a. Find the speed and kinetic energy of the cars if they collide and couple toget..
a orbiting satellite stays over a certain spot on the equator of rotating earth. what is the altitude of the orbit
An object is located 100 centimeter in front of a diverging lens of focal length -25 centimeter. Determine where is the final image formed
a 2 kg block is taken from a furnace where its temperature was 650 degree c and placed on a large block of ice at 0
two equally charged particles are held 3.0 10-3 m apart and then released from rest. the initial acceleration of the
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