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You are standing at According to your assistant, were the lightning strikes simultaneous?
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If not, what was the time difference between the two? Express your answer to two significant figures and include the appropriate units. |

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You are standing at x=9.0km and your assistant is
standing at x=2.0km. Lightning bolt 1 strikes at
x=0km and lightning bolt 2 strikes at x=15.0km.
You see the flash from bolt 2 at t=20μs and the
flash from bolt 1 at t=60μs.
According to your assistant, were the lightning strikes
simultaneous?
Part A. According to your assistant, were the lightning strikes
simultaneous?
Yes, the lightning strikes simultaneous.
No, the lightning bolt 1 strikes first.
No, the lightning bolt 2 strikes...

You are standing at x=9.0km. Lightning bolt 1 strikes at x=0km
and lightning bolt 2 strikes at x=12.0km. Both flashes reach your
eye at the same time. Your assistant is standing at x=4.0km. The
assistant does not see the flashes at the same time. What is the
time difference between the two?

1.) You are standing at x= 8.0 km and your assistant is standing
at x= 5.0 km. Lightning bolt 1 strikes at x= 0 km and lightning
bolt 2 strikes at x= 15 km. You see the flas from bolt 2 at t = 12
microseconds and the flash from bolt 1 at t= 52 microseconds. What
is the time difference between the two?
2.) You are standing at x= 8 km. Lightning bolt 1 strikes at x=
0 km...

Victoria is looking to the north. Lightning bolt 1 strikes a
telephone pole 450 m from her. Lightning bolt 2 strikes a tree 1.2
km from her. Victoria sees the telephone pole strike 2
micro-seconds before the tree strike.
a. How long does it take the light from each strike to reach
Victoria?
b. According to Victoria, were the lightning strikes
simultaneous?
c. If they weren’t simultaneous, which happened first and what
is the time difference between the two strikes?

A bolt of lightening strikes a building in the city. You are on
top of a hill 15 km away.
1. How much longer does it take the sound of the thunder created
by the lightning to reach your ears than the light from the
lightning to reach your eyes if the sound waves travel at a speed
of 363 m/s and light travels at a speed of c = 3.00 x 108 m/s?
2. If the dominant frequency of...

Find the tension in the left wire supporting the traffic light
shown in the figure.
(Figure 1) Assume ?1 = 55 ?, ?2 = 35 ? and
m = 31 kg .
Express your answer to two significant figures and include the
appropriate units.
FL =
371.27371.27NN
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Part B
Find the tension in the right.
Express your answer to two significant figures and include the
appropriate units.
FR =

Please show the steps
1) What is the magnitude of the electric field a distance 1.5 mm
from an electron?
E=?
2) Three point charges are placed on the x-axis as follows: 22
μC at x=0; 30 μC at x=0.60m;
and -10 μC at x=1.2m.
A) Find the net force on the 22 μC point charge. Assume
the direction of the x-axis as positive.
Express your answer to two significant figures and include the
appropriate units.
F1=?
B) Find the...

You are standing 5.0 mm from a convex security mirror in a
store. You estimate the height of your image to be half of your
actual height. Estimate the radius of curvature of the mirror.
Follow the sign conventions. Express your answer to one significant
figure and include the appropriate units.

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...

1.) When a 1984 Alfa Romeo Spider sports car accelerates at the
maximum possible rate, its motion during the first 20 s is
extremely well modeled by the simple equation
v2x=2Pmt where
P = 3.6 × 104 W is the car's power output, m =
1200 kg is its mass, and vx is in m/s. That is,
the square of the car's velocity increases linearly with time.
a.)
Find an algebraic expression for the car's acceleration at time
t.
Express...

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