Question

Gold has 79 electrons per atom and an atomic mass of 197 uu.

Part A

What is the total charge of all the electrons in 3.7-kgkg bar of gold?

Express your answer to two significant figures and include the appropriate units.

B What is the net charge of the bar?

Answer #1

The answer is given below

Part A.) What is the total negative charge, in
coulombs, of all the electrons in a small 1.15 g sphere of carbon?
One mole of C is 12.0 g , and each atom contains 6 protons and 6
electrons. Express your answer using three significant figures.
Part B.) Suppose you could take out all the
electrons and hold them in one hand, while in the other hand you
hold what is left of the original sphere. If you hold your...

Part A
How many conduction electrons are there in a 1.00 mm diameter
gold wire that is 50.0 cm long?
Part B
How far must the sea of electrons in the wire move to deliver
-24.0 nC of charge to an electrode?
Express your answer with the appropriate units.

A system consists of 60 electrons and 44 protons.
e=1.60×10?19C
What is the total charge of the system?
Express your answer to three significant figures and include the
appropriate units.

neutral carbon atom has 6 protons, 6 neturons and 6 electrons.
What is the atomic mass of Carbon?
1.
18
2.
12
3.
6.00127
4.
12.0107
10 points
QUESTION 17
Charles Darwin's theory of descent with modification was
formulated from two basic observations, which of the following is
one of those observations?
1.
A population usually can produce many more offspring than will can
be supported
2.
All mutations lead to lower reproductive...

A.) Two identical closely spaced circular disks form a
parallel-plate capacitor. Transferring 2.5×109 electrons
from one disk to the other causes the electric field strength
between them to be 1.0×105 N/C .
What are the diameters of the disks? Express your answer to two
significant figures and include the appropriate units.
B.) At a distance r from a point charge, the electric
potential is 4600 V and the magnitude of the electric field is
2.0×105 V/m .
- What is...

Please Answer all 3 completely! Thank you <3
1. In an integrated circuit, the current density in a
2.4-μm-thick × 72-μm-wide gold film is 7.0×105 A/m^2
Part A: How much charge flows through the film in 15 min?
Express your answer to two significant figures and include the
appropriate units.
2. The current in an electric hair dryer is 10 A . How many
electrons flow through the hair dryer in 5.8 min ? Express your
answer using two significant...

Question 11
Part A)
What is the stress within the girder?
Express your answer to two significant figures and include the
appropriate units.
stress
Part B)
A sign (mass 2400 kg ) hangs from the end of a vertical steel
girder with a cross-sectional area of 0.013 m2 . Ignore the mass of
the girder itself. The elastic modulus for steel is
2.0×1011N/m2.
What is the strain on the girder?
Express your answer to two significant figures.
strain =
Part...

A -14 nC charge is located at (x, y) = (1.4 cm
, 0 cm).
Part B
What is the y-component of the electric field at the
position (x, y) = (5.9 cm , 0 cm)?
Express your answer to two significant figures and include the
appropriate units.
Part D
What is the y-component of the electric field at the
position (x, y) = (?5.9cm, 0 cm)?
Express your answer to two significant figures and include the
appropriate units.
Part...

Problem 5.54
A 100.0-g bar of gold is heated from 25 ∘C to 50 ∘C during which
it absorbs 322 J of heat. Assume the volume of the gold bar remains
constant.
Part A
Based on the data, calculate the specific heat of
Au(s).
Express your answer to two significant figures and include the
appropriate units.
Cs =
0.13 J⋅(g⋅∘C)−1
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Part B
Suppose that the same amount of heat is added...

Suppose a 20-kW radio station emits EM waves uniformly in all
directions.
Part A
How much energy per second crosses a 1.4 m2 area 1 km from the
transmitting antenna?
Express your answer to two significant figures and include the
appropriate units.
Part B
What is the rms magnitude of the
E⃗ field at this point, assuming
the station is operating at full power?
Express your answer to two significant figures and include the
appropriate units.
Part C
What is...

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