Question

A) Name the three fundamental physical quantities of measurements in physics and state their SI units of measurements. Give an example in each case.

B) Define Scalar and vector quantities; in each case give an example.

Answer #1

A) there are seven fundamental physical quantity in measurement.

i) **mass**

unit- kilogram(kg)

example- amount of matter present in the body

ii)

**length**

unit-meter(m)

example- the distance from the Earth to Sun is
1.49*10^{11}m

iii) **time**

unit= sec(s)

example- total time of a day is 24hr= 86400sec

iv) **temperature**

unit- Kelvin(k)

example- the temperature of the sun 5778K

v) **amount of substance**

unit- mole

vi) **electric current**

unit- Ampere

vii) **luminous of intenticity**

unit- candela

B)

Scalar- the physicl quantity which has only magnitude is called a scalar quantity.

Example- speed, distance, work , energy, pressure

Vector- the physical quantity which has both magnitude and direction is called a vector quantity.

Example- velocity, mometum, force, acceleration

Electric current is the fundamental SI electrical dimension,
with the ampere(A) as its unit. Determine units for the following
quantities as combinations of fundamental SI units.
(a) Electrical Power
(b)Electrical Charge
(c)Electric Potential difference
(d) Electric resistance
(e) Electric capacitance

Name and define at least three barriers to entry used by
monopolies or oligopolies and give a real-world example of
each.

state and local finance question
1.State and Local Government face three fundamental fiscal
choices . Please list these choices , and using an example in a
specified government program , explain how these choices interact
with each other , if at all

Name three diseases that could cause an altered state of
consciousness in a 6-year-old child. Define each condition and
identify the symptoms. How does the mental status of the child
differ for each disease?

For the following three processes, state whether each of the
four thermodynamic quantities q, w, ΔU, and ΔH is greater than,
equal to, or less than zero for the system described. Briefly
explain your reasoning for each answer.
a. Two copper bars, one initially at 80 °C and the other
initially at 20 °C are brought into contact with each other in a
thermally insulated compartment and then allowed to come to
equilibrium.
b. A sample of liquid in a...

For the following three processes, state whether each of the
four thermodynamic quantities q, w, ΔU, and ΔH is greater than,
equal to, or less than zero for the system described. Briefly
explain your reasoning for each answer. (Adapted from Tinoco,
2.15)
a. Two copper bars, one initially at 80 °C and the other initially
at 20 °C are brought into contact with each other in a thermally
insulated compartment and then allowed to come to
equilibrium.
b. A sample...

Give the two main types of minerals and provide three examples in
each case. b) State the major functions of minerals in the body of
any grazing animal. c) Which mineral element is the most limiting
in grazing animal productivity throughout the world?

38. A State issues car license plates with three letters
followed by three numbers (for example, FGH831 or BBB222). How many
different license plates are possible? (Note that letters or
numbers may repeat in the license plate. Hint: Use the Fundamental
Counting Rule for this question.) There are five students who are
interested in presenting their final project to the class, but
there is only time for three presentations. The five students are
Amy, Bob, Chun, Dan and Ed. 39....

Momentum and collisions
Formula for Oomph
An important physical quantity, the name of which we’ll give later,
corresponds to the intuitive idea of oomph. The more oomph
something has, the harder it is to stop, and the more ability it
has to knock other things over. Let’s figure out the formula for
oomph .
A small pebble and a larger rock are thrown at the same
speed.
Which one has more oomph? Why?
The rock is twice as massive as...

1) State the main difference between an ODE and a PDE?
2) Name two of the three archetypal PDEs?
3) Write the equation used to compute the Wronskian for two
differentiable
functions, y1 and y2.
4) What can you conclude about two differentiable functions, y1 and
y2, if their
Wronskian is nonzero?
5) (2 pts) If two functions, y1 and y2, solve a 2nd order DE, what
does the Principle of
Superposition guarantee?
6) (8 pts, 4 pts each) State...

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