How much electrical charge does an atom with 6 protons, 6 neutrons, and 5 electrons have?

A) a total charge of +17
B) a negative charge of -5
C) a positive charge of +7
D) a positive charge of +1
E) none of the above


D

Physics & Space Science

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Equation of Traveling Waves: The vertical displacement y(x,t) of a horizontal string aligned along the x-axis is given by the equation y(x,t) = (6.00 mm) cos[(3.25 m-1)x - (7.22 s-1)t]. What are the (a) speed and (b) amplitude of this wave?

What will be an ideal response?

Physics & Space Science

About how many stars does a globular cluster have?

A. About a dozen B. Hundreds C. Tens to hundreds of thousands D. Hundreds of millions E. Billions

Physics & Space Science

Transformers use ac to satisfy the required

A) transfer of energy from coil to coil. B) voltage for transformation. C) change in magnetic field for operation. D) change in input current. E) magnetic field intensities.

Physics & Space Science

The circuit below shows three resistors in series. R3 > R2 > R1. The resistors are all made of the same wire with the same diameter but have different lengths. Rank the magnitudes of the electric fields in the resistors from least to greatest



a.
E3 < E2 < E1.

b.
E2 < E1 = E3.

c.
E1 = E2 = E3.

d.
E1 = E3 < E2.

e.
E1 < E2 < E3.

Physics & Space Science