Physics, 11.07.2019 13:30 wanderer3653

Remote controls rely waves to carry signals and transmit information over short distances.

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Answer from: EMQPWE

The answer to the question is Infrared wave i.e remote controls rely on infrared waves to carry signals and transmit information over short distances.

EXPLANATION:

Most of the remote controls use infrared wave which is one of the electromagnetic wave. Its wavelength is greater than visible light, but, smaller than micro wave. The radio wave is also used for remote controls. But, it is preferred for long distance signal transmission.

The remote control has a transmitter which is nothing else than a light emitting diode. It is fitted to the pointing head of the remote control.

A unique infrared light pulse having a definite pattern is transmitted by the emitter .The receiving device receives the signal and responds to the signal according to the pattern.

Answer from: rafoxy35

Remote Control Rely on Infrared Light

Answer from: Quest

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm. the wire diameter is d = 0.9 mm. the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2) in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

Answer from: Quest

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

$v = 5.4 t$

after 28s,

$v(28) = 5.4(28) = 151.2$ m/s

which i would round to 150 m/s as my final answer

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Remote controls rely waves to carry signals and transmit information over short distances....

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