How many shells in an atom of silicon contain electrons?

a. 3
b. 2
c. 5
d. 4


a

Physics & Space Science

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A bowling ball-size probe from a spaceship and a pebble-size object land on a large asteroid that is far from any star. After a long period of time has passed, it is highly probable that the pebble and the probe

a. have each had the same change in temperature. b. have each had the same change in volume. c. are in thermal equilibrium with one another. d. are not in thermal equilibrium with one another. e. are in thermal equilibrium with one another, but are not at the same temperature.

Physics & Space Science

Resistance and Resistivity: The resistivity of the material of a wire is 1.76 × 10-8 ? ? m. If the diameter of the wire is 2.00 mm and its length is 2.00 m, what is its resistance?

A. 112 ? B. 11.2 ? C. 1.12 ? D. 0.112 ? E. 0.0112 ?

Physics & Space Science

Determine the rms current for the circuit



a.
55 mA

b.
77 mA

c.
99 mA

d.
0.19 A

e.
61 mA

Physics & Space Science

Addition by 1. Components: The figure shows three vectors, , and , along with their magnitudes. Determine the magnitude and direction of the vector given by  -  - 

src="https://sciemce.com/media/4/ppg__cp1pbb0313192044__f15g1q35g6.jpg" style="vertical-align: -5.0px;" />.

What will be an ideal response?

Physics & Space Science