Of the following, which is a renewable energy resource?

a.

coal

c.

geothermal energy

b.

kerosene

d.

natural gas



Please select the best answer from the choices provided


A

B

C

D

Answer:

Since the waves must carry a great deal of visual as well as audio information, each channel requires a larger range of frequencies than simple radio transmission. TV channels utilize frequencies in the range of 54 to 88 MHz and 174 to 222 MHz. (The entire FM radio band lies between channels 88 MHz and 174 MHz.)

Answer:

Since the waves must carry a great deal of visual as well as audio information, each channel requires a larger range of frequencies than simple radio transmission. TV channels utilize frequencies in the range of 54 to 88 MHz and 174 to 222 MHz. (The entire FM radio band lies between channels 88 MHz and 174 MHz.)

Explanation:

Ok

Answer:

mark as the brainly olss

Answer:

Explanation:

The frequency equation for waves is

[tex]f=\frac{v}{\lambda}[/tex] where f is the frequency, v is the velocity, and lambda is the wavelength. Filling in:

[tex].26=\frac{v}{25}[/tex] so

v = .26(25) and

v = 6.5 meters/second

Answer:

200 N

Explanation:

Since Young's modulus for the metal, E = σ/ε where σ = stress = F/A where F = force on metal and A = cross-sectional area, and ε = strain = e/L where e = extension of metal = change in length and L = length of metal wire.

So,  E = σ/ε = FL/eA

Now, since at break extension = e.

So making e subject of the formula, we have

e = FL/EA = FL/Eπr² where r = radius of metal wire

Now, when the radius and length are doubled, we have our extension as e' = F'L'/Eπr'² where F' = new force on metal wire, L' = new length = 2L and r' = new radius = 2r

So, e' = F'(2L)/Eπ(2r)²

e' = 2F'L/4Eπr²

e' = F'L/2Eπr²

Since at breakage, both extensions are the same, e = e'

So,  FL/Eπr² = F'L/2Eπr²

F = F'/2

F' = 2F

Since F = 100 N,

F' = 2 × 100 N = 200 N

So, If the radius and length of the wire were both doubled then it would break when the tension reached 200 Newtons.

Answer:

Its b because the meteor moving strait.

Explanation:

Answer:

Mixture C (salt and sugar)

Explanation:

Both salt and sugar can dissolve in water. And you can't just separate the mixture by filtering it like you could in the other mixtures.

Answer:

[tex]624\:\mathrm{m}[/tex]

Explanation:

We can use kinematics equation [tex]\Delta x =v_it+\frac{1}{2}at^2[/tex].

What we're given:

Solving for [tex]\Delta x[/tex]:

[tex]\Delta x=100\cdot 12+\frac{1}{2}\cdot -8\cdot 12^2=\boxed{624\:\mathrm{m}}[/tex]

Answer:

dermis

Explanation:

epidermis

dermis

hypodermis

Answer:

I think the answer would be c

Explanation:

A. is not scientific

B. is subjective, so it can't be scientific.

C. can be studied with an experiment

D. relates to regulations, not science

solid

1.coin

2.iron bar

3.glass(no, it's does not flow)

liquid

1.water

2.wine

3.mercury(a liquid metal).

Gas

1.carbon dioxide

2.nitrogen

2.oxygen

I hope this answer helps me

Answer:

A lightning flash is at least 270,000 mph (434,523 kph)!

Explanation:

Have a great summer :)

Answer:

670,000,000 mph

Explanation:

The speed of lightning. While the flashes we see as a result of a lightning strike travel at the speed of light (670,000,000 mph) an actual lightning strike travels at a comparatively gentle 270,000 mph

Answer:

Explanation:

The mass of the car doesn't matter because On a flat curve the mass of the car does not affect the speed at which it can stay on the curve. You would need the mass if you were solving the the centripetal force acting on the car, but not the acceleration.

[tex]a=\frac{v^2}{r}[/tex] and filling in

[tex]a=\frac{(8.5)^2}{48.0}[/tex] and we need 2 significant digits in our answer. That means that

a = 1.5 m/sec²

Answer:

R + 6 ohms

Explanation:

The current is the same in all three resistors

i = 2 amps

The problem is that the total voltage is unknown.

R = r

R1 =3 ohms

R2 = 3 ohms

The voltage drop is E = I*R

I = 2 amps

R1 = 3 ohms

R1 = 3 ohms

E = 3*2 = 6 volts

The second 3 ohm resistor also has 6 volts across it.

The total is 12 volts so far. But we know nothing more on how to solve for R.

All you can say is that the total resistance = R + 6 ohms

Answer:

soccer, football, volleyball, baseball, locress

Explanation:

hope it helps

Answer:

halved.

Explanation:

Given the following data;

Potential difference = constant

Resistance = 2 * resistance = 2R

To find the current I;

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

[tex] V = IR[/tex]

Where;

V represents voltage measured in voltage.

I represents current measured in amperes.

R represents resistance measured in ohms.

Making current (I) the subject of formula, we have;

[tex] I = \frac {V}{R} [/tex]

Substituting into the formula, we have;

[tex] I = \frac {V}{2R} [/tex]

[tex] I = \frac {1}{2} * \frac {V}{R} [/tex]

[tex] I = \frac {1}{2} * I [/tex]

Therefore, if the resistance of the resistor is doubled, the current through the resistor is halved.

Answer:

10 cm

Explanation:

Được

Tần số = 50 hertz

Khoảng cách đã đi = 25 m

Thời gian đi quãng đường 25 m = 5 giây

Tốc độ của sóng = 25/5 = 5 mét trên giây

Như chúng ta biết

Bước sóng = Vận tốc / tần số

Bước sóng = 5 mét trên giây / 50 trên giây

Bước sóng = 0,1 m = 10 cm

Answer:

James Prescott Joule

James Prescott Joule, (born December 24, 1818, Salford, Lancashire [now in Greater Manchester], England—died October 11, 1889, Sale, Cheshire), English physicist who established that the various forms of energy—mechanical, electrical, and heat—are basically the same and can be changed one into another.James Prescott Joule experimented with engines, electricity and heat throughout his life. Joule's findings resulted in his development of the mechanical theory of heat and Joule's law, which quantitatively describes the rate at which heat energy is produced from electric energy by the resistance in a circuit.

Answer:

Explanation:

The equation for Kinetic Energy is

[tex]KE=\frac{1}{2}mv^2[/tex] and we know everything but the mass of this ball. Filling in:

[tex]3.00=\frac{1}{2}m(5.00)^2[/tex]. Get everything isolated from the :

[tex]m=\frac{2(3.00)}{(5.00)^2}[/tex] which tells us that we need 3 significant digits in our answer.

m = .240 kg since mass is always in kg i the velocity is in meters/sec

Answer:

si?

Explanation:

definition La myopie. L'oeil myope est trop long ou le cristallin trop convergent. L'image d'un objet à l'infini se forme en avant de la rétine. Le punctum remotum est ... i dont know sorry

Answer:

B) uniform

Explanation:

We can solve this problem by using Boyle's law, which states that:

For a constant mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume.

Mathematically:

where

p is the pressure of the gas

V is its volume

If we apply the equation to the bottle in the problem, we see that:

- when the volume of the bottle (and therefore, of the gas inside) decreases, than the pressure will increase

- viceversa, when the volume of the bottle increases, the pressure will decrease

The amount by which the pressure increases is inversely proportional to the decrease in volume, so the answer depends on how the volume of the bottle decreases: however, if the volume of the bottle decreases uniformly, then we can say that the pressure inside the bottle will also increases uniformly.

MARK THIS ANSWER AS THE BRAINLIEST PLEASE ❤️

An increase in pressure of a plastic bottle  uniformly decreases by a factor of ten when the volume decreases.

Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.

There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .

It is a scalar quantity which is related to the vector area element with a normal force acting on it.It is distributed over solid boundaries and across arbitary sections of fluid normal to the boundaries at every point.Pressure and volume of gas are inversely proportional.

Learn more about pressure,here:

https://brainly.com/question/14760196

#SPJ6

A massive truck collides with a less massive car. The force experienced by the truck is equal to (less than, equal to, greater than) the force experienced by the car. The resulting acceleration of the truck is less than (less than, equal to, greater than) the resulting acceleration of the car.

Action-reaction forces are equal and opposite forces that act on different objects, so they don't cancel out. In fact, they often result in motion. Think about Jerod again. He applies force with his foot to the ground, whereas the ground applies force to Jerod and the skateboard, causing them to move forward.

Hope this helps =)

Answer:

a

Explanation:

because it has  compact  molecules  

Answer:

Energy

Explanation:

Answer:

54.88 J

Explanation:

PE = mgh

PE = (4)(9.8)(1.4)

= 54.88 J

Answer:

$10 a g

Explanation:

Answer:

As The mass of the beach ball is having lowest magnitude when compared with the other balls given so when apply the same magnitude of force to all the balls then the beach ball due to its lighternessand also its inertia of rest would not resist the force so much so when you apply the force to this ball it would starts to roll and covers the maximum diatance whwn compared with the other ball only in the condition when same magnitude of force applied.Thats this ball would do more work than the other ball.The mass also influences the velocity carried by the body and also the kinetic energy possessed by the body. More the force applied more the distance it would cover

Hope it helps

Answer:

Current = 2 Amperes

Explanation:

Given the following data;

Resistance = 8 Ohms

Power = 32 W

To find the amount of current going through the speaker;

Mathematically, power can be calculated using the formula;

Power = current² * resistance

Substituting into the formula, we have;

32 = current² * 8

Current² = 32/8

Current² = 4

Taking the square root of both sides, we have;

Current = √4

Current = 2 Amperes