Gravitational Force: What is the magnitude of the gravitational force that two small 7.00-kg balls exert on each other when they are 35.0 cm apart? (G = 6.67 × 10-11 N ? m2/kg2)
Fill in the blank(s) with the appropriate word(s).
2.67 × 10-8 N
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What do "forbidden" lines reveal about interstellar space?
A) The density or pressure of this gas is much lower than can be produced in a laboratory. B) The laws of physics are not the same in space as they are on Earth. C) There are unknown elements in space that do not correspond to elements found on Earth. D) There are molecules found in meteorites and interstellar dust that are not found on Earth. E) All of the above are true.
Determine the rms voltage drop across the inductor in the circuit.
A. 11 V B. 27.5 V C. 33 V D. 38.5 V E. 30.5 V
A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer records a current. The current results because
a. the coil acts like a transformer b. the free electrons in the conductor experience a force when they move in the magnetic field c. an electromagnetic wave is generated d. the wire is ferromagnetic e. none of the above
Stream velocity is dependent on
A) the size and shape of the stream's channel. B) the gradient and stream dimension. C) gradient and friction. D) gradient, channel geometry, and discharge.