Remote controls enable users to adjust the volume and channel of televisions without having to touch the television. Which of these best describes the signals sent by remote controls to televisions?

Answers

Answer 1

Answer:

Answer:

When you use your control remote, you can see that there is not a "material" thing that comes out of the control remote and goes to the TV, but there is actually energy that comes from the control remote (and this is why your control remote needs battery)

This energy is called an "electromagnetic wave" usually in the infrared range, this means that the energy that comes from the control remote has less energy than the visible red light (and this is why we can not see the light that comes out of the control remote), and this "signal" is read by the TV, in order to change of channel or change the volume.

You even can see that there is a sort of light (electromagnetic wave) coming out from it if you point with a camera to the small bulb that is in the front of the control remote.

Answer 2

Answer:

Answer:electromagnetic wave

Explanation:

Related Questions

Aspace walking astronaut has become detached from her spaceship! She’s floating in space with her handy tool belt attached to her waist, thinking about how she might get back to the ship, which she can see 50m from her current location. How can she get back to the ship? Use the language from the laws of motion in your answer.What can she do with the tool belt? What will that action cause her body to do? Why? Which of Newton’s Laws applies to this situation? Write a paragraph which incorporates all of the above information.
A farmer uses 3450 J of energy on a wheel and axle to lift a 15 kg bucket of water 20 m to the top of her well. What is the efficiency of the system?
Two waves with amplitudes of 75 units and 74 units arrive at a point in a medium simultaneously. If the two waves are out of phase with each other, what is the resultant amplitude of the wave?a. 74 units b. 1 unit c. 75 units d. m149 units
Which of the following minerals maintains healthy fluid balance?A. Calcium and iron B. Sodium and potassium C. Magnesium and zinc D. Selenium and iron
In a clarinet, the reed end of the instrument acts as a node and the first open hole acts as an antinode. because the shape of the clarinet is nearly cylindrical, its harmonic series approximately follows that of a pipe closed at one end. What harmonic series is predominant in a clarinet?

The loss of an organism at the bottom of a food chain negatively impacts all organisms in the chain.

Answers

It is a true fact that the loss of an organism at the bottom of a food chain negatively impacts all organisms in the chain.

Explanation:

This is because if the below organism which is constantly interchanged with plants, no herbivores would eat those plants, thus, will also die, which will also determine that the next consumers will have trifle to eat which will also happen to their deaths. So, yes. It concerns it negatively. And very negatively.

If this is a true or false question, it is True.

John’s mass is 91.2 kg, and Barbara’s is 51.9 kg. He is standing on the x axis at xJ = +9.99 m, while she is standing on the x axis at xB = +3.27 m. They switch positions. How far and in which direction does their center of mass move as a result of the switch?

Answers

Answer:

the center of gravity moves by 1.9 m towards the origin

Explanation:

from the question we are given the following

John's mass (Mj) = 91.2 kg

Barbara's mass (Mb) = 51.9 kg

John's location (Xj) = + 9.99 m

Barbara's location (Xb) = +3.27 m

center of mass (X) = ?

the center of mass is where the masses of John and Barbara is concentrated, and it is given by the formula below

X = ( ( Mj x Xj ) + ( Mb x Xb ) ) / (Mj + Mb)

X = ( ( 91.2 x 9.99 ) + ( 51.9 x 3.27 ) ) / ( 91.2 + 51.9 )

X = 7.6 m

now when they switch positions their locations now become

John's location (Xj) = + 3.27 m

Barbara's location (Xb) = +9.99 m

now putting their new locations into the formula

X = ( ( 91.2 x 3.27 ) + ( 51.9 x 9.99 ) ) / ( 91.2 + 51.9 )

X = 5.7 m

therefore the center of mass moves by

7.6 - 5.7 = 1.9 m

the center of gravity moves by 1.9 m towards the origin

Sal connected four light bulbs in a parallel circuit. If Sal adds another light bulb, what is true about the current in each bulb?A) The current decreased when a fourth bulb was added.

B) The current in the four bulbs is much less than the current in three bulbs.

C) The current in each bulb remained the same even though another bulb was added.

D) The current in the fourth bulb is less than the current int he other three bulbs.

Answers

Since all the bulbs are connected in parallel with each other

so here voltage across each bulb will remains the same

so here we will have

$V = i R$

now all bulbs are identical and we have same voltage source across all the bulbs

so we will have current in each bulb given by same equation

$i = (V)/(R)$

now we can say that correct answer will be

C) The current in each bulb remained the same even though another bulb was added.

The answer is C) The current in each bulb remained the same even though another bulb was added.

Calculate (A⃗ ×B⃗ )⋅C⃗ for the three vectors A⃗ with magnitude A = 4.86 and angle θA = 23.5 ∘ measured in the sense from the +x - axis toward the +y - axis, B⃗ with B = 4.02 and θB = 60.1 ∘, and C⃗ with magnitude C = 6.02 and in the +z - direction. Vectors A⃗ and B⃗ are in the xy-plane.

Answers

Answer:

(A⃗ ×B⃗ )⋅C⃗ = 69.868

Explanation:

We simplify the cross product first, thereafter the solution of the cross product is now simplified with the dot product as shown in the step by step calculation in the attachment

The total potential and kinetic energy of all the microscopic particles in an object make up itsa. nuclear energy.
b. chemical energy.
c. electric energy.
d. thermal energy.

Answers

b. chemical energy
because thats the only way i see it out of your anwser choices hope i helped

A basketball player is 5.22 m from the goal when she shoots the ball at 10.0 m/s at a 65.0 degree angle. How much time does it take the hall to reach the horizontal position of the goal?