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Step2247 [10]
3 years ago
7

Help please :) Infrared waves are transmitted by ....... ?

Physics
2 answers:
almond37 [142]3 years ago
6 0
Infrared light is the part of the electromagnetic spectrum, and is an electromagnetic form of radiation. It comes from the heat and thermal radiation, and it is not visible to the naked eyes. In infrared transmission, senders can be simple light emitting diodes (LEDs) or laser diodes. Photodiodes act as receivers.
Margarita [4]3 years ago
4 0
Infrared light is the part of the electromagnetic spectrum, and is an electromagnetic form of radiation. It comes from the heat and thermal radiation, and it is not visible to the naked eyes. In infrared transmission, senders can be simple light emitting diodes (LEDs) or laser diodes. Photodiodes act as receivers.
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_________ is the angle of incidence is equal to the angle of reflection
ExtremeBDS [4]
Law of reflection is the angle of incidence = angle of reflection.
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3 years ago
A trampoline has a spring constant of 3430 N/m how far will the trampoline sink when a 70 kg person steps on it
Dominik [7]
F = ma = -kx

a = 9.81 m/s²
k = 3430 N/m
m = 70 kg

x = - ma/ k = 0.2m
3 0
3 years ago
Read 2 more answers
The distance between a Point on one wave and the same point on the next cycle of the wave
Gala2k [10]

Answer:

wavelength

Explanation:

the definition of wavelength is the distance between two consecutive waves. with that being said, the point from the crest of one wave to the crest of another would be wave length

8 0
2 years ago
5. Which of the folowing statements about the energy ofa pendulum is true?
Mars2501 [29]

Answer:

C

Explanation:

total energy = potential energy + kinetic energy

8 0
3 years ago
Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the speed of the blades tips can be
Crank

Answer:

(a) v = 65.35 m/s

(b) ac = 82.16 m/s²

Explanation:

Kinematic of the blades of the wind turbine

The blades of the wind turbine describe circular motion and the formulas that apply to this movement are as follows:

v = ω * R   Formula (1)

Where:

v : tangential velocity (m/s)

ω : angular velocity (rad/s)

R : radius of the particle path (m)

The velocity vector is tangent at each point to the trajectory and its direction is that of movement. This implies that the movement has centripetal acceleration (ac):

ac =  ω²* R Formula (1)

ac : centripetal acceleration (m/s²)

Data:

ω=  12 rpm = 12 rev/min

1 rev = 2π rad

1 min = 60 s

ω=  12 rev/min = 12 (2π rad)/(60 s)

ω = 1.257 rad/s

R = 52 m

(a)Tangential velocity at the tip of a blade (v)

We apply the formula (1)

v =  ω* R

v =  ( 1.257)* (52) = 65.35 m/s

(a)  Centripetal acceleration at the tip of a blade (ac)

We apply the formula (2)

ac =  ω²*R

ac =   ( 1.257)²* (52) = 82.16 m/s²

6 0
3 years ago
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