Most radio telescope searches for signs of intelligent life are performed in the water hole
Indicate whether the statement is true or false
TRUE
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A 10-A current flows through a wire for 2.0 min. (e = 1.60 × 10-19 C)
(a) How much charge has passed through this wire? (b) How many electrons have passed any point in the wire? What will be an ideal response?
An extrasolar planet is
a. a planet that orbits our Sun that we have not yet discovered. b. one not needed for the formation of our solar system which is kept in a special area just in case. c. a planet found orbiting around a star other than the Sun. d. another name for an asteroid. e. a planet extra close to our Sun.
A gas of helium atoms (each of mass 6.65 × 10-27 kg) are at room temperature of 20.0°C. What is the de Broglie wavelength of the helium atoms that are moving at the root-mean-square speed?
(h = 6.626 × 10-34 J • s, the Boltzmann constant is 1.38 × 10-23 J/K) A) 5.22 × 10-11 m B) 7.38 × 10-11 m C) 1.04 × 10-10 m D) 2.82 × 10-10 m E) 3.99 × 10-10 m
The process of transforming sediment into sedimentary rock is called
a. lithification. b. striation. c. metamorphism. d. hardening.