White dwarfs are all about the same size

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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Since an electron is so less massive than a proton, what is the approximate mass and charge of a neutral hydrogen atom?

a. the mass of an electron, negative b. the mass of a proton, neutral c. the mass of a neutron, positive d. the mass of a proton and neutron, positive

Physics & Space Science

RLC Circuits: A 120-V rms voltage at 60 Hz is applied across a series combination of a 20-?F capacitor and an unknown resistor. If the rms value of the current in the circuit is 0.60 A, what is the resistance of the resistor?

A. 60 ? B. 120 ? C. 180 ? D. 150 ? E. 200 ?

Physics & Space Science

A uniform rod is 2.0 m long. The rod is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest at an angle of 30° above the horizontal. What is the angular acceleration of the rod at the instant it is released?

A. 4.7 rad/s2 B. 6.9 rad/s2 C. 6.4 rad/s2 D. 5.6 rad/s2 E. 4.2 rad/s2

Physics & Space Science

The proton is a member of the ________ family of particles.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science