Can someone help what are the common branches of physics
Answers
Answer: Dear Buddy ,the common brnches os physics are given below:
Explanation:
Mechanics
Classical physics
Modern physics
Thermodynamics
Electricity
Magnetism
Geo physics
Plasma physics
Optics
Sound and oscillation
Electronics
Chemical physics
Engineering physics
Solid state physics
Quantum physics
Nuclear physics
Particle physics
Bio physics
Astrophysics
Condensed matter physics
hope it helps
Answer:
Engineering is one of branches that uses physics mainly the most
Explanation:
as for engineering requires mathematics and physics principles in their everyday routine to calculate and measure accordingly to manufactur a product.
Related Questions
Calculate (A⃗ ×B⃗ )⋅C⃗ for the three vectors A⃗ with magnitude A = 4.86 and angle θA = 23.5 ∘ measured in the sense from the +x - axis toward the +y - axis, B⃗ with B = 4.02 and θB = 60.1 ∘, and C⃗ with magnitude C = 6.02 and in the +z - direction. Vectors A⃗ and B⃗ are in the xy-plane.
Name the physical quantity which changes contenously during uniform-circular motion.
A force of 34.5 newtons is applied to an object at an angle of 45 º with the horizontal. What is the force acting on the object in the horizontal direction?
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.43 V and a current of 3.1 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What (a) emf and (b) current are induced in the square coil
, atmospheric and oceanic clrulation patterns move cold air toward the poles.
c, heat from the poles is transferred toward the equaror.
d. the Sun`s rays are less concentrated near the poles.
Answers
Answer: The correct answer is- the Sun's rays are less concentrated near the poles.
The axis of the Earth is tilted, which causes the temperature difference between the Equator and polar regions of Earth.
Equator gets direct sunlight during the entire year whereas due to the tilted axis, polar regions are prevented to receive direct sunlight.
Also equator is aligned at 90 degrees to the sun, but as we move towards the poles, the angle of incident sunlight is increased exponentially.
So the intensity of the sun's rays is decreased or sunlight becomes less concentrated near the poles, resulting in colder climate closer to the poles.
Climate gets colder closer to the poles because the Sun`s rays are less concentrated near the poles. The answer is letter D. Also, the Earth is tilted causing the Sun’s ray to be farther from the poles.
Biomass incinerators
Wind farms
Solar panels
Answers
That's a great idea ! A wind turbine (windmill) or solar panels
on the roof of every WalMart, but don't stop there. Let K-Mart,
Target, Sears, Macy's, 7-11, McDonald's, and Subway in on it too.
In fact, why not place them on the roof of every house and
apartment building too ?
Just one question: Who's going to pay for them ?
_________________________________________________
The biggest single year-round residential use of energy in the
USA is to heat up and keep a ready supply of hot water. So the
single biggest residential use of energy could be eliminated with
a simple solar water heater on the roof of every house. From my
own personal observation, I know that Israel is there now, but here
in the USA, it's apparently not worth the time, effort, or expense ! ? !
However I mean in theory you could stick windmills on top of big Wal-Mart stores as wind turbines are placed on roofs regularly, so you can tell whoever set you that question that it is vague ;)
b. hexagonal aluminum shoulder.
c. steel nut.
d. mica washer.
Answers
more than 50% but less than 100%
50%
less than 50% but more than 0%
100%
Answers
Answer:
50% if light is unpolarized
100% if light is horizontally polarized
0% if light is vertically polarized
Explanation:
A polarizer has an axis that "blocks" the component of light in the direction perpendicular to the direction of the polarizer axis.
When unpolarized light passes through a polarizer, the intensity of light is reduced to , where
is the initial intensity of the light: this is because only the component of the light parallel to the axis of the polarizer will pass through, and this component makes 1/2 of the incident light intensity. In this case, since the axis of the polarizer is horizontal, only the horizontal component of the light will pass through, while the vertical component will be blocked. So in this case the final intensity will be 50% of the initial one.
On the other hand, if the incoming light is already horizontally polarized (same orientation as the polarizers), there is no vertical component to block, so all the light passes through the polarizer; therefore, the final intensity will be 100% of the original intensity.
Finally, if the incoming light is vertically polarized, no light will pass through it, because the polarizer's axis is horizontal, so it will block all the vertically polarized light: so the final intensity will be 0% of the original intensity.
All of this is after passing the 1st polarizer; so, after passing the 1st polarizer, the light is now horizontally polarized. Then, the intensity of the light passing through the 2nd polarizer is given by Malus' Law:
where is the angle between the axes of the two polarizers. Since here the two polarizers axes are parallel to each other,
, so
, and so the intensity after the 2nd polarizer is exactly the same as the intensity after the 1st polarizer.
Answers
Well, you see, I don't think Alana really is the reference frame.
Call me paranoid, but I think you changed the reference frame
during the question, and didn't tell us.
In which reference frame is the 19 km/hr measured ?
It CAN'T be Alana's reference frame. Your own reference
frame moves along with you, and you can't move in it, even
if your name is Alana.
If Alana is the reference frame, and she throws the tennis ball
at 11 km/hr, then the speed of the ball is 11 km/hr in Alana's
reference frame. Her reference frame moves with her, so
it makes no difference how fast she is skateboarding in any
other reference frame, who she throws the ball at, or whether
or not he sees it coming and catches it.
Yes, this stuff can get confusing. And if you think it's bad now,
wait till you start reading some of Prof. Einstein's stuff, where
two people in the same reference frame can watch the same
tennis ball, and not even agree on how fast it's moving, because
THEY're both moving and their own motion makes their rulers
and clocks change ! So they measure different speeds, and
they're both right !
But I got distracted. I'm sorry. The point I'm trying to make,
right now when you're just starting to learn reference frames,
is that EVERY time you say a speed, you have to tell which
reference frame the speed is in. Because, as you're starting
to learn, the same object can have a different speed in every
reference frame.
And, just in case you're thinking about this later today
and you want to ask "Which one is the REAL speed ?" . . .
THAT's the whole point of learning about reference frames !
There is NO SUCH THING as REAL speed. It ALWAYS
depends on which reference frame it's measured in. They're
all different, they're all real, and they're all correct.
The first thing we must do for this case is to define a frame of reference.
We know that, the frame of reference for this case is Alana.
Therefore, the tennis ball has a speed relative to Alana.
The speed relative to Alana, is the same speed with which Alana throws the tennis ball.
Therefore, the speed of the tennis ball is:
v = 11 Km/h
Answer:
The speed of the tennis ball is:
v = 11 Km/h
Answers
Acceleration = 24/9.47= 2.5 m/s^2