Question

The delta++ particle has 3 quarks (all of them are up quarks). How is it deduced that quarks come in at least 3 different colours?

Answer #1

One particle has a mass of 2.11 x 10-3 kg and a
charge of +8.91 μC. A second particle has a mass of 7.27 x
10-3 kg and the same charge. The two particles are
initially held in place and then released. The particles fly apart,
and when the separation between them is 0.128 m, the speed of the
2.11 x 10-3 kg-particle is 142 m/s.
Find the initial separation between the particles.

One particle has a mass of 4.58 x 10-3 kg and a
charge of +6.79 μC. A second particle has a mass of 8.66 x
10-3 kg and the same charge. The two particles are
initially held in place and then released. The particles fly apart,
and when the separation between them is 0.193 m, the speed of the
4.58 x 10-3 kg-particle is 191 m/s. Find the initial
separation between the particles.

You have 3 mammals and 3 reptiles in the zoo. You must feed each
of them. You can select from the following foods to feed: banana,
grapes, meat, oranges, lettuce, carrot, salmon, corn, apples.
(a) How many different ways can you feed each animal?
(b) How many different ways can you feed each animal if all the
foods are different?
(c) How many different ways can you feed each animal if at least
one mammal gets a banana and at...

I toss 3 fair coins, and then re-toss all the ones that come up
tails. Let X denote the number of coins that come up heads on the
first toss, and let Y denote the number of re-tossed coins that
come up heads on the second toss. (Hence 0 ≤ X ≤ 3 and 0 ≤ Y ≤ 3 −
X.)
(a) Determine the joint pmf of X and Y , and use it to calculate
E(X + Y )....

Question #3: (4 pts per part) Show all steps to receive
credit.
(a) Suppose a particle is moving along a straight line with
velocity ??(??) = 2?? − 6 in meters per second. Find the total
distance traveled by the particle from t = 1 to t = 6 seconds.
(b) Suppose a particle is moving along a straight line with
velocity ??(??) = 2?? − 6 in meters per second. What is the average
velocity of the particle between...

If an object is made up of only one kind of tiny particle what
can we say for sure about the composition of that object?
Explain.
If a mixture is composed of three kinds of tiny particles, two
of which are molecules and the third type is an atom, how would we
describe the substances in the mixture and why?
Can we mix three compounds together and end up with two new
compounds and an element? If yes, how? If...

A small particle has a mass of 3.5mg and carries a charge of
7.0μC. It is launched in the horizontal direction with a speed of
10.0m/s from an altitude of 0.25m above a large horizontal surface.
There is a downward pointing electric field of strength 5.5N/C
everywhere above the surface. How far does the particle travel in
the horizontal direction before contacting the surface?
write up a neat solution showing all of the steps of your
solution so that I...

The Pentagon has been criticized for paying up to $600 for a
hammer that could have been purchased from Lowes for $10. Are these
criticisms justified? What examples have you come across where
there are apparently excessive charges, and how might you deal with
them?

Hi someone can do this 3 exercises, please!!!!! Thumbs up if you
answer them all and correct! Thanks
4) A company purchases shipments of machine components and uses
this acceptance sampling plan: Randomly select and test 22
components and accept the whole batch if there are fewer than 3
defectives. If a particular shipment of thousands of components
actually has a 7% rate of defects, what is the probability that
this whole shipment will be accepted
5) The brand name...

John has n acquaintances. He wants to meet 3 of them every day
of 2018 for coffee at his home. What is the smallest value of n
such that he can do this without calling the same set of three
people more than once during 2018? Note that a person can come on
multiple days, but never more than once with the same 2 other
people. For the above n, we want to make a statement like “There is
some...

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