1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rashid [163]
3 years ago
13

What radiation do remote controls use?

Physics
1 answer:
aleksandr82 [10.1K]3 years ago
5 0

Answer:infrared radiation

Explanation:

Most remote control uses infrared radiation

You might be interested in
A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her orig
atroni [7]

Answer:

The plane is 2353.7 mi from the starting position.

Explanation:

Please, see the attached figure for a graphic representation of the problem.

We have 2 displacement vectors "a" and "b" and a vector "c" that is the sum of vectors "a" plus "b" (c = a + b). The module of "c" will be the distance of the plane from the starting point.

vector a = (xa, ya)

vector b = (xb, yb)

where “xa” and “xb” are the horizontal components of the vectors “a” and “b” respectively and “ya” and “yb” are the vertical components of each vector.

Then, the vector c = a + b will be:

c = (xa + xb, ya + yb)

The module of a vector is calculated using the following expression for a vector “v”:

module of v = \sqrt{x^{2} + y^{2} }

Then, the module of c will be:

module of c = \sqrt{(xa + xb)^{2} + (ya + yb)^{2}} = distance from starting point

Then, we have to find the components of vectors “a” and “b”

The distance traveled during the first 1.5 hours of the trip is the module of the vector “a”. Then:

module of a = \sqrt{xa^{2} + ya^{2} } = distance traveled during the first 1.5 hours.

The distance can be calculated using the equation of the position of an object moving in a straight line at constant speed:

x = x0 + v * t

where

x = position at time t

x0 = initial position

v = speed

t = time

Considering x0 as the starting point (x0 = 0)

x = 675 mi/h * 1.5 h = 1012.5 mi

Then:

module of a = \sqrt{xa^{2} + ya^{2} } = 1012. 5 mi

Since the plane moves only on the horizontal (see figure), the "y" component of the vector, "ya", will be 0.

Then:

(1012.5 mi)² = xa²

xa = 1012. 5mi

a = (1012.5 mi, 0)

In the same way, we have fo find the components of the vector “b”. The module of “b” will be the distance traveled during this part of the flight:

module of b = \sqrt{xb^{2} + yb^{2} } = x = x0 + v * t

Considering x0 as the point at which the plane turns (x0 = 0)

x = 675 mi / h * 2 h = 1350 mi

Using trigonometry, we can calculate xb and yb (see figure):

sin angle = opposite / hypotenuse

cos angle = adjacent / hypotenuse

In this case:

opposite = yb

adjacent = xb

hypotenuse = module of “b”

Then:

sin 10° = yb / module of “b”

sin 10° * module of “b” = yb

In the same way:

cos 10° * module of “b” = xb

Since module of “b” = 1350 mi

xb = 1329.5 mi

yb = 234.4 mi

b = (1329.5 mi, 234.4 mi)

The vector c = a+b can now be calculated:

c = (xa + xb, ya + yb)

c =(1012.5 mi + 1329.5 mi, 0 mi + 234.4 mi) = (2342 mi, 234.4 mi)

The module of c will be:

module of c = \sqrt{(2342 mi)^{2} + (234.4 mi)^{2} } = 2353.7 mi

The plane is 2353.7 mi from the starting position.

4 0
3 years ago
If an inclined plane is 6 m long and 2 m high, what is its mechanical advantage?
choli [55]

Answer:

the answer should be C owo

5 0
3 years ago
Read 2 more answers
Which substances resist pH changes? <br> Acids<br> Hydrogen ions<br> Buffers<br> Bases
Vikki [24]

The correct choice is Buffers.

Buffers contains both acids and bases in equilibrium.when base is added to buffers, they adjust the pH value by releasing hydrogen ions.when acid is added to buffers, they adjust the pH value by consuming hydrogen ions. hence these substances resist any change in their pH value by releasing or absorbing hydrogen ions.This process keeps the pH value constant.

6 0
3 years ago
Read 2 more answers
What percentage of all traffic deaths occur in cars traveling less than 60 mph?
Alina [70]
This is a bit too broad. Maybe this is something to google up
5 0
3 years ago
As you know, the oceans cover most of the earth, and contain a huge amount of resources. Protecting these resources is one reaso
matrenka [14]
A is the answer your looking for
8 0
3 years ago
Read 2 more answers
Other questions:
  • What three forms of kinetic energy can a polyatomic molecule have?
    10·1 answer
  • What is thE Rquation fo calculating the electrical force between two charges?
    11·2 answers
  • If the mass of the products measured 120 g, what would be the mass of the reactants?
    8·2 answers
  • A rubber ball with a mass of 0.30 kg is dropped onto a steel plate. The ball's velocity just before impact is 4.5 m/s and just a
    7·1 answer
  • The discovery that the universe appears to be expanding led to a widely accepted theory called ____?
    8·2 answers
  • A point charge Q is located a distance d away from the center of a very long charged wire. The wire has length L &gt;&gt; d and
    11·1 answer
  • In a new scenario, the block only makes it (exactly) half-way through the rough spot. How far was the spring compressed from its
    7·1 answer
  • Speed is a vector quantity. Do you agree? Justify your answer.
    13·2 answers
  • A 230 kg steel crate is being pushed along a cement floor. The force of friction is 480 N to the left and the applied force is 1
    11·1 answer
  • A standard baseball has a circumference of apoximately 23cm. If a baseball had the same mass per unit volume as a neutron or a p
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!