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Svetradugi [14.3K]
3 years ago
8

How can non visible radiation be used

Physics
2 answers:
Sauron [17]3 years ago
7 0
1. Radio
2. Microwave
3. X-ray
4. Alpha rays

DanielleElmas [232]3 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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A child pushes a 75 N toy car across the floor. What is the mass of the car?
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Answer:

7.6 kg

Explanation:

w=75N

w=mg

m=w÷g

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m=7.6kg

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vekshin1
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An empty elevator has a mass of 722 kg. It moves between floors at a maximum speed of 6.00 m/s. The elevator is stopped on the 2
FinnZ [79.3K]

Answer:

Explanation:

The lift is going down with acceleration

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acceleration a = ?

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6² = 0 + 2 x a x 15.25

a = 1.18 m /s²

Elevator is going down with acceleration  .

mg - T = ma where T is tension in the cable .

722 x 9.8 - T = 722 x 1.18

7075.6 - T = 851.96

T = 6223.64 N .

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