The Schwarzschild radius of a black hole is about 3 km per solar mass; it is amazingly linear over a wide range of masses
Indicate whether the statement is true or false
TRUE
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Two identical resistors are connected in series across the terminals of a battery with a voltage V and a current i flows through the circuit. If one of the resistors is removed from the circuit and the remaining one connected across the terminals of the battery, how much current would flow through the circuit?
a) 4i b) 2i c) i d) i/2
Your friend Alf tells you that the magnetic force on a stationary 10 C charge near the north pole of a magnet having a magnetic field of 0.10 tesla is twice as great as that on a stationary 5.0 C charge at exactly the same position
Discuss this with your friend and explain how he is correct or incorrect.
The distance of the Earth from the Sun is 93,000,000 miles. If there are 3.15 × 10^7 s in one year, find the speed of the Earth in its orbit about the Sun
a. 9.28 miles/s c. 27.9 miles/s b. 18.6 miles/s d. 37.2 miles/s
The concept of matter waves reflects the observation that particles such as electrons sometimes act like ______________
Fill in the blank(s) with correct word