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Dahasolnce [82]
3 years ago
12

I NEED HELP PLEASE THANKS :)

Physics
1 answer:
Galina-37 [17]3 years ago
5 0

Explanation:

Diffraction of light involves a change in direction of waves as they pass through an opening or around an obstacle in their path. Water waves have the ability to travel around corners, around obstacles and through openings.

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A 650-kg elevator starts from rest. It moves upward for 3.00 s with constant acceleration until it reaches its cruis- ing speed
Nataly_w [17]

Answer: P=5573.43\ W

Explanation:

Given

Mass of the elevator is M=650\ kg\\\

Time period of ascension t=3\ s

cruising speed v=1.75\ m/s

Distance moved by elevator during this time

Suppose Elevator starts from rest

\Rightarrow v=u+at\\\Rightarrow 1.75=0+a(3)\\\Rightarrow a=0.583\ s

Distance moved

\Rightarrow h=ut+0.5at^2\\\Rightarrow h=0+0.5\times 0.5833\times (3)^2\\\Rightarrow h=2.62\ m

Gain in Potential Energy is

\Rightarrow E=mgh\\\Rightarrow E=650\times 9.8\times 2.62\\\Rightarrow E=16,720.3\ N

Average power during this period is

\Rightarrow P=\dfrac{E}{t}\\\\\Rightarrow P=\dfrac{16,720.3}{3}\\\\\Rightarrow P=5573.43\ W

7 0
3 years ago
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A 30 ky child running at 7 m/s jumps onto a 10 kg sled which was initially at rest. What will be the
Ede4ka [16]
Hope this helps. If you need clarification just ask me!

7 0
3 years ago
Nanotechnology is technology that is about 1 nm to ______ nm in size.
AnnyKZ [126]

Explanation:

Nanotechnology is science, engineering, and technology conducted at the nanoscale, which is about 1 to 100 nanometers.

6 0
3 years ago
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A negatively charged particle is moving to the right, directly above a wire having a current flowing to the right, as shown belo
qwelly [4]

Answer:

Explanation:

As the current in the ire is towards right and the charge particle is above the wire, the direction of magnetic field due to the current carrying wire is perpendicularly outwards to the plane of paper. It is calculated by the Maxwell's right hand thumb rule. Now by using the Fleming's left hand rule, the direction of force is upwards.

5 0
3 years ago
A anormal human eye has a focal length of about 2.3cm if you look at the tib of a pencil 55.3 cm from your eye haw far is the im
svet-max [94.6K]

The image would be 53 cm from the lens of your eye.

What is Lens?
A lens is a transmissive optical tool that uses refraction to focus or disperse a light beam. A compound lens is made up of multiple simple lenses (elements), typically arranged along a common axis, as opposed to a simple lens, which is one solid piece of transparent material. Glass or plastic are used to make lenses, which are then polished or moulded into the desired shape. In contrast to a prism, which simply refracts light without focusing it, a lens can focus light to create an image. Lenses are also devices that focus or disperse waves as well as radiation other than visible light, such as <u>explosive lenses, microwave lenses, particle lenses, and acoustic lenses</u>.

Lenses are a common component of <u>telescopes</u><u>, binoculars, and cameras, among other imaging devices</u>.

To learn more about Lens
brainly.com/question/28039799
#SPJ4

8 0
1 year ago
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