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4 years ago

How can non visible radiation be used

Physics

2 answers:

Sauron [17]4 years ago

7 0

1. Radio
2. Microwave
3. X-ray
4. Alpha rays

DanielleElmas [232]4 years ago

3 0

Here are some popular applications of
non-visible electromagnetic radiation:

-- listen to the weather and music on the radio
-- watch a football game on TV
-- change the TV channel from the couch, using the 'remote'
-- make toast
-- warm leftover meatloaf in the "microwave"
-- make a call with your cellphone
-- text a friend with your 'smartphone'
-- surf the internet in your house without wires (with WiFi in the house)
-- use GPS in the car
-- get a new set of dental X-rays made
-- spend 30 minutes in a tanning bed
-- look at your friend's face

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To water the yard you use a hose with a diameter of 3.2 cm. Water flows from the hose with a speed of 1.1 m/s. If you partially

cupoosta [38]

Answer:

The speed of water flow inside the pipe at point - 2 = 34.67 m / sec

Explanation:

Given data

Diameter at point - 1 = 3.2 cm

Velocity at point - 1 = 1.1 m / sec = 110 cm / sec

Diameter at point - 2 = 0.57 cm

Velocity at point - 2 = ??

We know that from the continuity equation the rate of flow is constant inside a pipe between two points.

Thus

⇒ $A_{1}$ × $V_{1}$ = $A_{2}$ × $V_{2}$

⇒ $\frac{\pi }{4}$ × $d_{1} ^{2}$ × $V_{1}$ =

⇒ $d_{1} ^{2}$ × $V_{1}$ = $d_{2} ^{2}$ × $V_{2}$

⇒ $(3.2)^{2}$ × 110 = $(0.57)^{2}$ × $V_{2}$

⇒ $V_{2}$ = 3467 cm / sec

⇒ $V_{2}$ = 34.67 m / sec

Thus the speed of water flow inside the pipe at point - 2 = 34.67 m / sec

3 0

3 years ago

If a lightning occurred exactly 1 mile from your location, how many seconds will it take for the sound waves created by the thun

timama [110]

Answer:

5 seconds

Explanation:

sound travels 1 km in roughly 3 secs so 1 mile in roughly 5 secs.

4 0

3 years ago

isotopes of an element differ in the composition of the nucleus. The varying numbers of ____ cause the _____ of each isotope to

Rus_ich [418]

Answer:

The answer is neutrons and mass number

Explanation:

6 0

3 years ago

Read 2 more answers

Describe the properties of oceanic crust

PSYCHO15rus [73]

Answer:

Not including a sedimentary cover of variable thickness and composition, the oceanic crust consists of three layers: (1) a relatively thin uppermost volcanic layer of basaltic lavas known as mid-ocean ridge basalts (MORB) erupted on the seafloor; (2) a thicker layer of more coarsely crystalline, intrusive basaltic

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3 years ago

A car is traveling at 40 m/s. The brakes are applied an after 3 seconds the car is traveling 13 m/s. What is the acceleration of

Elena-2011 [213]

Answer:

- 9m/s²

Explanation:

Given parameters:

Initial velocity = 40m/s

Time taken = 3s

Final velocity = 13m/s

Unknown:

Acceleration of the car = ?

Solution:

Acceleration is the rate of change of velocity with time taken.

Acceleration = $\frac{Final velocity - Initial velocity }{Time taken}$

Acceleration = $\frac{13 - 40 }{3}$ = - 9m/s²

4 0

3 years ago