Question

**Part A**

What is the escape speed of an electron launched from the surface of a 1.5-cm-diameter glass sphere that has been charged to 9.0 nC ?

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

v=

Answer #1

What is the escape speed of an electron launched from the
surface of a 1.1-cm-diameter glass sphere that has been charged to
10 nC ?

Two 10-cm-diameter charged rings face each other, 23 cm apart.
The left ring is charged to -24 nC and the right ring is charged to
+24 nC .
Part A
What is the magnitude of the electric field
E⃗ at the midpoint between the two rings?
Express your answer to two significant figures and include the
appropriate units.
Part C
What is the magnitude of the force F⃗ on a
-1.0 nC charge placed at the midpoint?
Express your answer to two...

A 1.00-mm-diameter glass sphere has a charge of + 1.40 nC.
What speed does an electron need to orbit the sphere 1.40 mm
above the surface?

What is the speed of a proton that has been accelerated from
rest through a potential difference of -1400 V ?
Express your answer to two significant figures and include the
appropriate units.

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...

A free electron and a free proton are exactly
1.3 cm apart.
Find the magnitude of the acceleration of the proton.
Express your answer with the appropriate
units.
Find the magnitude of the acceleration of the electron.
Express your answer with the appropriate
units.
Hearing loss. Person A can barely hear a sound at a particular
frequency with an intensity level of 2.4 dB. Person B, who has
hearing loss, can barely hear a 14.8 dB tone with the same...

(HW03-22.23) An electron is released from rest at a distance of
0.600 m from a large insulating sheet of charge that has uniform
surface charge density 4.30×10?12C/m2 .
A) How much work is done on the electron by the electric field
of the sheet as the electron moves from its initial position to a
point 3.00×10?2 m from the sheet?
Express your answer to three significant figures and include the
appropriate units.
B)
What is the speed of the electron...

An electron and a 140-gg baseball are each traveling 110 m/sm/s
measured to a precision of 0.065 %% .
Part A:
Calculate the uncertainty in position of the electron.
Express your answer to two significant figures and include the
appropriate units.
Part B:
Calculate the uncertainty in position of the baseball.
Express your answer to two significant figures and include the
appropriate units.
Part C:
Compare the uncertainty in position of each.
Express your answer using two significant figures.

A probe is launched vertically upwards from the surface of a
planet with a speed
v = 3/4 vesc
where vesc is the escape speed from the planet. The
planet has no atmosphere.
Determine, in terms of the radius of the planet R, the
maximum height from the surface of the planet reached by the
probe.

The wires leading to and from a 0.12-mm-diameter lightbulb
filament are 1.5 mm in diameter. The wire to the filament carries a
current with a current density of 4.9×105 A/m2 Part A What is the
current in the filament? Express your answer to two significant
figures and include the appropriate units. Part B What is the
current density in the filament? Express your answer to two
significant figures and include the appropriate units.

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