Question

A neutron (m=1.67×10?27kg) moves with a speed of 0.91 c.

Part A What is its total energy?

Part B what is its rest energy?

Part C What is its kinetic energy?

Answer #1

Two
protons (resting mass M=1.67*10-27kg) move in opposite directions
at the same rate. After collision, the protons are retained, but
the collision results in a new particle having a rest mass of
m=2.75*10-28kg.
1a) Calculate the kinetic energy of the proton in MeV

(I) A free neutron (m = 1.67 × 10−27 kg) has a mean
life of 880 s. What is the uncertainty in its mass (in kg)?
(II) What minimum frequency of light is needed to eject
electrons from a metal whose work function is 4.8 × 10−19 ? and
give the ejected electron a kinetic energy of 150???
(III) If an electron’s position can be measured to a precision
of 12 nm.
what is the uncertainty in its speed?
Assuming...

1. A neutron has a rest mass of 1.68 × 10−27kg. How much kinetic
energy would it possess if it was travelling at 0.800c?
2. How much energy would be required to produce a kaon particle
at rest with a rest mass of 8.79 × 10−28kg?
3. The Sun radiates energy away at a rate of 3.9 × 1026W. At
what rate is the Sun losing mass due to this radiation?
4. How many 100.0W light bulbs could be powered...

A proton moves with a speed of 0.850c.
(a) Calculate its rest energy.
____________________MeV
(b) Calculate its total energy.
___________________ GeV
(c) Calculate its kinetic energy.
____________________ GeV

A proton moves with a speed of 0.975c.
(a) Calculate its rest energy. MeV
(b) Calculate its total energy. GeV
(c) Calculate its kinetic energy. GeV

A proton moves with a speed of 0.955c.
(a)
Calculate its rest energy.
MeV
(b)
Calculate its total energy.
GeV
(c)
Calculate its kinetic energy.
GeV

What wavelength does a neutron (mass = 1.67 × mc021-1.jpg g)
moving at 10% of the speed of light have?

An object has a total energy that is 2.8 times its rest
energy.
Part A
Part complete
What is its speed?
Express your answer using two significant figures.
v =
0.93
c
SubmitPrevious Answers
Correct
Part B
What is the ratio of the object’s relativistic kinetic energy to
its rest energy?
Express your answer using two significant figures.

Chapter 7, Problem 1. A proton (mass m = 1.67 × 10-27 kg) is
being accelerated along a straight line at 5.40 × 1013 m/s2 in a
machine. If the proton has an initial speed of 6.20 × 105 m/s and
travels 2.40 cm, what then is (a) its speed and (b) the increase in
its kinetic energy?

(1) A proton (mass m = 1.67 ✕ 10-27 kg) is
being accelerated along a straight line at 3.4 ✕ 1015
m/s2 in a machine. The proton has an initial speed of
2.4 ✕ 107 m/s and travels 4.1 cm.
(a) What is its speed? (Give your answer to at least four
significant figures.)
(b) What is the increase in its kinetic energy?
(2) A helicopter lifts a 82 kg astronaut 20 m vertically from
the ocean by means of...

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