Nuclear reactors are bombs waiting to go off
What will be an ideal response?
Absolutely not. The fissile material is not nearly dense enough, at about 4%, to
explode. Bomb-quality uranium has > 90% uranium-235.
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The surface rocks on Venus are similar to ____ rocks on Earth
a. oxide-rich b. anorthosite c. sedimentary d. granitic e. basaltic
The Law of Universal Gravitation was developed by:
A) Kepler. B) Galileo. C) Newton. D) Copernicus. E) Einstein.
In Fizeau's experiment for measuring the speed of light, the wheel has 475 notches. What rotational speed is required for the return beam of light to pass through the next notch? The time between successive notches is 6.65 × 10-5 s
A) 20.4 rev/sec B) 16.6 rev/sec C) 31.7 rev/sec D) 66.4 rev/sec E) 90.9 rev/sec
You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor. If you want to achieve the largest possible resistance, you should attach the leads to the opposite faces that measure
A) 3 cm × 5 cm. B) 3 cm × 8 cm. C) 5 cm × 8 cm. D) Any pair of faces produces the same resistance.