describe what form of electromagnetic radiation does a radio use?

Answer:

d

Explanation:

Answer:

any answer would be correct. its a choose your own answer question lol

Explanation:

Answer:

v = 24 m/s, rightwards

Explanation:

Given that,

The mass of TBT explosive = 5 kg

It explodes into two pieces.

One of the pieces weighing 2.0 kg flies off to  the left at 36 m/s. Let left be negative and right be positive.

The law of conservation of momentum holds here. Let v be the final speed of the remaining piece. So,

[tex]5\times 0=2\times (-36)+3\times v\\\\-72=-3v\\\\v=24\ m/s[/tex]

So, the final speed of the remaining piece is 24 m/s and it is in the right direction.

Answer:

Average speed = 5 m/s

Explanation:

Given the following data;

Distance = 100m

Time = 20 secs

To find the average speed;

Speed = distance/time

Substituting into the formula, we have;

Speed = 100/20

Speed = 5m/s

Therefore, Elsa's average speed is 5 meters per seconds.

Answer:

In the language of science, a theory is an explanation of why and how things happen. For gravity, we use Einstein's Theory of General Relativity to explain why things fall. ...While laws rarely change, theories change frequently as new evidence is discoevered.

Answer:

Photosynthesis occurs in the organelle, chloroplast .

Cellular respiration occurs in a plants or animals mitochondria.

Explanation:

Hope this helps! :)

Answer:

[tex]\vec{A} + \vec{B} = \vec{A} - \vec{B}[/tex] if and only if [tex]\vec{B}[/tex] is a zero vector.

Explanation:

An equation is true if and only if adding the same value to both sides of the equation (the value needs to be compatible) gives an equation that is also true.

Start with the [tex]\vec{A} + \vec{B} = \vec{A} - \vec{B}[/tex].

This equation is true if and only if [tex]\left(\vec{A} + \vec{B}\right) + \vec{B} = \left(\vec{A} - \vec{B}\right) + \vec{B}[/tex] ([tex]\vec{B}[/tex] is added to both sides of the original equation.)

Vector addition and subtraction are associative. Therefore, [tex]\left(\vec{A} + \vec{B}\right) + \vec{B} = \left(\vec{A} - \vec{B}\right) + \vec{B}[/tex] if and only if [tex]\vec{A} + \left(\vec{B} + \vec{B}\right) = \vec{A} + \left(- \vec{B} + \vec{B}\right)[/tex], which is equivalent to [tex]\vec{A} + 2\, \vec{B} = \vec{A}[/tex].

[tex]\vec{A} + 2\, \vec{B} = \vec{A}[/tex] if and only if [tex]\left(-\vec{A}\right) + \vec{A} + 2\, \vec{B} = \left(-\vec{A}\right) + \vec{A}[/tex] ([tex]\left(-\vec{A}\right)[/tex]is added to both sides of this equation,) which is equivalent to [tex]2\, \vec{B} = \vec{0}[/tex].

[tex]2\, \vec{B} = \vec{0}[/tex] if and only [tex]\displaystyle \frac{1}{2} \cdot \left(2\, \vec{B}\right) = \frac{1}{2} \cdot \vec{0}[/tex], which is equivalent to [tex]\vec{B} = \vec{0}[/tex]. That is: [tex]\vec{B}[/tex] is the zero vector.

In other words:

[tex]\begin{aligned}& \vec{A} + \vec{B} = \vec{A} - \vec{B}\\ &\iff \left( \vec{A} + \vec{B}\right) + \vec{B} = \left(\vec{A} - \vec{B}\right) + \vec{B} \\ &\iff \vec{A} + \left(\vec{B} + \vec{B}\right) = \vec{A} + \left(- \vec{B} + \vec{B}\right) \\ & \iff \vec{A} + 2\, \vec{B} = \vec{A} \\ & \iff \left(-\vec{A}\right) + \vec{A} + 2\, \vec{B} = \left(-\vec{A}\right) + \vec{A} \\ &\iff 2\, \vec{B} = \vec{0} \\ &\iff \frac{1}{2} \cdot 2\,\vec{B} = \frac{1}{2} \cdot \vec{0} \\ &\iff \vec{B} = \vec{0}\end{aligned}[/tex].

Hence, [tex]\vec{A} + \vec{B} = \vec{A} - \vec{B}[/tex] if and only if [tex]\vec{B}[/tex] is the zero vector.

Answer:

The correct answer is -

1. 67500 J

Explanation:

The formula for KE is  

K.  E.  =  1/ 2 *m v ^2  

So input the values we know:

K . E.  =  1/2 ⋅*150  *30 ^2

K . E.  =  150 * 900 /2

K . E . =  67500  

K . E.  = 67500

If the velocity is double then;

use 2v in the formula

K.  E.  = ( 1/ 2 )*m(2 v) ^2

= (1/2)*4m v ^2

it is four times to original Kinetic energy, and similarly if tripled then, it will be 9 times to original.

air exert a pressure take a glass and put the water on it and small piece a paper and glass take downword and observe it so tha air exert pressure

Answer:

Explanation:god is good because the god is what it stays

god is good because the god is what it staysgod is good because the god is what it staysgod is good because the god is what it stays

Answer: b

Explanation:

p=mv

p=30

m=1500

rearrange to find v

(30)=(1500)(v)

v= 30/1500

v = 0.02 m/s

Answer:

Explanation:

potential energy = mgh

kinetic energy = 1/2mv²

Answer:

Kinetic energy increase

Answer:

increases

Explanation:

The owl eats 42 prey in a week and 180 prey in a month.

To calculate how much the owl eats in a week and a month, we need to determine the number of prey consumed in each time period.

In a week:

The owl produces two pellets every 24 hours. So, in one day, it consumes 2 * 3 = 6 prey (since each pellet contains the remains of 3 prey).

In a week (7 days), the owl consumes 6 * 7 = 42 prey.

In a month:

Assuming a month has 30 days (though some months have 31 days or 28/29 days), we can calculate the number of prey consumed in a month.

In a day: 6 prey

In a month (30 days): 6 * 30 = 180 prey.

Hence, the owl eats 42 prey in a week and 180 prey in a month.

To know more about prey here

https://brainly.com/question/32395792

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Answer:

Yes. Space is somewhat voidless. Space has no atmosphere, just planets, stars, and dark matter. Space can be said to be special. Space never ends. Gravity would cause an object to fall down. However, since space never ends, an object could continue moving forever.

At an altitude 400 km (250 miles) above the Earth, gravity is nearly 90 % as strong as on the surface of the earth.

The gravity of Earth can be described as the net acceleration that is imparted to objects due to the combined effect of gravitation and centrifugal force. It can be defined as a vector quantity, whose direction coincides with a plumb bob and strength or magnitude.

In SI units gravitational acceleration is expressed in meters per second squared or equivalently in newtons per kilogram. Near Earth's surface, the gravity acceleration is approximately 9.81 m/s², ignoring the effects of air resistance.

The gravity of the earth decreases with altitude rises above the Earth's surface because of the greater distance from the Earth's center. At an altitude of 400 kilometers equivalent to an orbit of the ISS, gravity is nearly 90% as strong as at the Earth's surface.

Learn more about Gravity, here:

https://brainly.com/question/1479537

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Answer: The color is orange, the state of matter is liquid

Explanation:

Answer:

[tex]d=785.27\ g/cm^3[/tex]

Explanation:

The question says that, "Calculate the absolute density of a fluid whose mass is 12.8 kg and which occupies a volume of 16.3 cm³".

Mass, m = 12.8 kg = 12800 g

Volume, V = 16.3 cm³

The density of an object is defined as the mass per unit volume i.e.

[tex]d=\dfrac{m}{V}\\\\d=\dfrac{12800}{16.3}\\\\d=785.27\ g/cm^3[/tex]

So, the absolute density of the fluid is equal to [tex]785.27\ g/cm^3[/tex].

Explanation:

potential energy =360800J

mass(m)=?

height (h)=25m

g=9.8m/s²

we have

potential energy =360800J

mgh=360800J

m×9.8×25=360800

m=360800/(9.8×25)=1472.653061kg

Answer:

HELP PLEASE!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted!

Answer:

A

Explanation:

Trial and error is basically trying something, if it works, great. If it does not work, try another way.

Answer:

A. Trial and error

Explanation:

The other user is correct.

Answer:

 W = 500 J

Explanation:

Work is defined by

         W = F . x

if we develop the dot product

         W = F x cos θ

where is the angle between the force and the displacement, in this case the angle is zero, so cos 0 = 1

          W = F x

indicate that each person applies a force of 500 N, so the total force is

         F = 1000 N

let's reduce the distance to the SI system

          x = 50 cm = 0.50 m

let's calculate

          W = 1000 0.50

          W = 500 J

Answer:

The answers should be B and D

Explanation:

I hope this helps!

Answer:

it grows fast, spreads faster and kills off smaller native plants

Explanation:

honeysuckle spreads very quickly and blooms multiple times a year, spreading seeds and growing in more spots. everytime it does so, it cuts off other smaller native plants from the sunshine and kills them off

Answer:

The wavelength result is 3 m. Most common velocities: Light in vacuum (air) = 300,000 km/s. Light in water = 225,000 km/s. Sound in air = 340 m/s. Sound

Explanation:

the answer is 3m

Answer: These ideas, that all men are created equal and that government is based on the consent of the governed, became the foundation for the US political ideal of popular sovereignty: that the government exists to serve the people, who elect representatives to express their will.

Explanation: Hope this helped! <3

Answer:

Element Symbol # of Atoms

Oxygen O 2

Sulfur S 1

Explanation: