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3 years ago

What are fossil fuels composed of? 1.Carbon 2.Nitrogen 3.Oxygen

Physics

2 answers:

Dovator [93]3 years ago

6 0

Answer: Carbon

Explanation:

Monica [59]3 years ago

5 0

Answer:

fossil fuels are composed of Carbon.

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What is the person’s displacement for the trip? what is a vector quantity? give an example.

borishaifa [10]

Answer:

+ 3.0 m

Explanation:

displacement is shortest distance from fixed point O in particular direction . in diagram shortest distance at end from O is 3 m and it is right of O so +. HENCE +3.0m

4 0

3 years ago

A binary star system consists of two stars of masses m1 and m2. The stars, which gravitationally attract each other, revolve aro

mote1985 [20]

Answer: $a_{2}=\frac{m_{1}}{m_{2}} a_{1}$

Explanation:

The rest of the question is below:

Find a2, the magnitude of the centripetal acceleration of the star with mass m2.

Assuming both stars are describing a uniform circular motion, their acceleration vector is directed towards the center of mass of the system (that's why it's called centripetal acceleration).

Now, according to Newton's 2nd law, the force $F$ is directly proportional and in the same direction as the acceleration.

For $m_{1}$ :

$F_{1}=m_{1}a_{1}$

For $m_{2}$ :

$F_{2}=m_{2}a_{2}$

If the centripetal force is the same for both stars:

$F_{1}=F_{2}$

$m_{1}a_{1}=m_{2}a_{2}$

Isolating $a_{2}$ :

$a_{2}=\frac{m_{1}}{m_{2}} a_{1}$

8 0

3 years ago

Which electron transition produces light of the highest frequency in the hydrogen atom?

allsm [11]

Answer:

To identify the electron transition that has the highest frequency in the hydrogen atom.Answer: The frequency of light produced by electron transition is highest among the given electron transition, therefore, the option (a) is correct.Explanation:The energy of emitted light by the electron transition is given as: is the energy of the initial level. is the energy of the final level.The energy difference for the electron transition is highest among given electronic transition.The energy of the light is given as:Here, is the plank’s constant. is the frequency of the light.The energy of the light is directly proportional to the frequency of the light.Therefore the frequency of light by the electron transition is highest among given electronic transition.

Explanation:

7 0

3 years ago

John walked a distance of 900 meters in 10 minutes what was his average speed in kilomerters per hour

LuckyWell [14K]

Answer:

5.4

Explanation:

900/10=90 and 90(60)=5400 meters. 5400/100=5.4

3 0

3 years ago

A golf ball is whacked in a direction 25 degrees south of the east axis. The ball travels 125m. What are the east and north comp

Natalka [10]

We are given:

Direction of motion: 25 degrees south of the east axis

Distance covered = 125 m

East component of the Ball:

this component is denoted by green color in the image

Once we drop a perpendicular from the end of the direction vector on the x-axis, we get a right angled triangle

The magnitude of the side of the triangle on the x-axis denotes the east component of the ball

Using trigonometry, we find that the east component of the ball is:

125 * Cos(25 degrees)

125 * 0.9 = 112.5 i (here, i denotes rightward direction on the x-axis)

North Component of the Ball:

this component is denoted by blue color in the image

Using trigonometry, we find that the North component of the ball is:

125* Sin(25 degrees) (-j) [j denotes upward movement on the y-axis, since the vector is acting downwards, we have used '-j']

125 * 0.42 (-j)

52.5 (-j) = -52.5 j

Therefore the direction vector of the ball is 112.5 i - 52.5 j

where 112.5 i is the East Component and -52.5 is the North Component

3 0

3 years ago