All categories

2 years ago

A remote control only works when it is pointed at the television. What is the best explanation for this?

2 answers:

8 0

It could be due to the use of an LED signal. The stronger the signal is, the farther you could be pointing from the TV, if the signal is weaker you normally have to point it directly at the cable box for the signal to be transmitted.

denpristay [2]2 years ago

3 0

Answer:

The remote control transmits information through waves, such as infrared waves, to the television.

You might be interested in

Assume that the radius r of a sphere is expanding at a rate of 40 cm/min. The volume of a sphere is V = 4 3 πr3 and its surface

Scrat [10]

Answer:

The rate of change in surface area when r = 20 cm is 20,106.19 cm²/min.

Step-by-step explanation:

The area of a sphere is given by the following formula:

$A = 4\pi r^{2}$

In which A is the area, measured in cm², and r is the radius, measured in cm.

Assume that the radius r of a sphere is expanding at a rate of 40 cm/min.

This means that $\frac{dr}{dt} = 40$

Determine the rate of change in surface area when r = 20 cm.

This is $\frac{dA}{dt}$ when $r = 20$ . So

$A = 4\pi r^{2}$

Applying implicit differentiation.

We have two variables, A and r, so:

$\frac{dA}{dt} = 8r\pi \frac{dr}{dt}$

$\frac{dA}{dt} = 8*20\pi*40$

$\frac{dA}{dt} = 20106.19$

The rate of change in surface area when r = 20 cm is 20,106.19 cm²/min.

6 0

2 years ago

2000 tickets sold for $20000 student tickets are $10 regular tickets $20 how many of each ticket sold

schepotkina [342]

They sold 2000 student tickets and 0 regular tickets

6 0

3 years ago

Please show your work <img src="https://tex.z-dn.net/?f=1%5Cfrac%7B2%7D%7B3%7D%20%2B%202%5Cfrac%7B3%7D%7B4%7D" id="TexFormul

Shkiper50 [21]

Answer:

$→1 \frac{2}{3} + 2 \frac{3}{4} \\ = \frac{5}{3} + \frac{11}{4} \\ = \frac{20 + 33}{12} \\ = \frac{53}{12}\\ =\boxed{4\frac{5}{12}}✓$

53/12 is the right answer.

6 0

3 years ago

Read 2 more answers

A car salesperson earns a $500 fee per car she sells. If she sells 4 cars in one day, how much money does she earn in fees?

Bumek [7]

She will earn $2,000 fees for the 4 cars that she sold.

5 0

3 years ago

Read 2 more answers

Does 2, 2, √4 make a right triangle

telo118 [61]

Answer:

No it can'tright angle triangle

Step-by-step explanation:

2, 2, √4 can't make a right triangle

By Pythagoras theorem the square of two sides equal to the third side of the triangle.

2^2+2^2=(√4)^2

4+4=4

8 is not equal to 4 so it not make right angle triangle.

8 0

2 years ago