What is the resistance of the combination of resistors?
A. 4.0 
B. 12
C. 13
D. 14
E. 15
C. 13
Physics & Space Science
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The original cloud from which the Sun and planets formed had a composition rich in hydrogen and helium
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
An electron is moving with the speed of 1780 m/s. What is its de Broglie wavelength?
A) 409 nm B) 302 nm C) 205 nm D) 420 nm E) 502 nm
Physics & Space Science
When an object is solely under the influence of conservative forces, the sum of its kinetic and potential energies does not change
A) True B) False
Physics & Space Science
Mass on a Spring: A 51.8-kg bungee jumper jumps off a bridge and undergoes simple harmonic motion. If the period of oscillation is 11.2 s, what is the spring constant (force constant) of the bungee cord?
A. 16.3 N/m B. 19.6 N/m C. 26.1 N/m
Physics & Space Science