Question

(a) Find the electric potential difference ΔV_{e}
required to stop a proton (called a "stopping potential") moving
with an initial speed of 3.85x10^{7} m/s. (b) Would an
electron traveling at the same speed require a greater or lesser
magnitude of electric potential difference? Explain.

Answer #1

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A proton has an initial speed of 3.6×105 m/s
a) What potential difference is required to bring the proton to
rest? _________________ kV
(b) What potential difference is required to reduce the initial
speed of the proton by a factor of 3? _________________ kV
(c) What potential difference is required to reduce the initial
kinetic energy of the proton by a factor of 3?
_______________________kV

A proton has an initial speed of 5.0×105 m/sm/s .
a) What potential difference is required to bring the proton to
rest?
b) What potential difference is required to reduce the initial
speed of the proton by a factor of 2?
c) What potential difference is required to reduce the initial
kinetic energy of the proton by a factor of 2?

A proton has an initial speed of 3.2×10^5 m/s .
a) What potential difference is required to bring the proton to
rest?
b) What potential difference is required to reduce the initial
speed of the proton by a factor of 2?
c)What potential difference is required to reduce the initial
kinetic energy of the proton by a factor of 2?

3. (a) Calculate the speed of a proton that is accelerated from
rest through an electric potential difference of 136 V.
m/s
(b) Calculate the speed of an electron that is accelerated through
the same potential difference.
m/s

A proton has an initial speed of 4.4×10^5 m/s .
A) What potential difference is required to bring the proton to
rest?
Express your answer using two significant
figures.
B) What potential difference is required to reduce the initial
speed of the proton by a factor of 2?
Express your answer using two significant
figures.
C) What potential difference is required to reduce the initial
kinetic energy of the proton by a factor of 2?
Express your answer using two...

A laboratory electromagnet produces a magnetic field of
magnitude 1.49 T. A proton moves through this field with a speed of
5.88 ✕ 106 m/s.
(a) Find the magnitude of the maximum magnetic force that
could be exerted on the proton.
____N
(b) What is the magnitude of the maximum acceleration of the
proton?
____m/s2
(c) Would the field exert the same magnetic force on an
electron moving through the field with the same speed? (Assume that
the electron is...

A laboratory electromagnet produces a magnetic field of
magnitude 1.44 T. A proton moves through this field with a speed of
5.98 ✕ 106 m/s.
(a) Find the magnitude of the maximum magnetic force that could
be exerted on the proton.
N
(b) What is the magnitude of the maximum acceleration of the
proton?
m/s2
(c) Would the field exert the same magnetic force on an electron
moving through the field with the same speed? (Assume that the
electron is...

Find the magnitude of the net force required to stop a car with
a mass of 1050 kg, initial speed is 40.0 km/h, and stopping
distance 25.0 m.

Calculate the speed of a proton after it accelerates from rest
through a potential difference of 220 V . (answer in m/s) Calculate
the speed of an electron after it accelerates from rest through a
potential difference of 220 V . (answer in m/s) A point charge of
-8.3 μC is at the origin. What is the electric potential
at (3.0 m, 0)? What is the electric potential at ( - 3.0m,0)? What
is the electric potential at (3.0m, -...

A. Calculate the speed of a proton after it accelerates from
rest through a potential difference of 300 V .
B. Calculate the speed of an electron after it accelerates from
rest through a potential difference of 300 V
C. The electric potential 1.9 mm from a point charge q is
3.5×104 V . What is the value of q?

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