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3 years ago

Why are fossil fuels considered nonrenewable resources if they are still forming beneath the surface today?

1 answer:

7 0

B is the answer because it takes millions of years to form these fossil fuels and everyday we use way more than we can find we may have a surplus for now but we may run out sooner than some think

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A circuit has a current of 2.4 A. The voltage is increased to 4 times its original value, while the resistance stays the same.

Ronch [10]

Answer:

Explanation:

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3 years ago

What do you need to verify in a patient's profile? A. Name, history of illness, medication, dose, strength, frequency B. Name, a

Lubov Fominskaja [6]

Hey there friend :)

I would go with Choice A

Sorry if wrong :(

Have a Fabulous day!

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4 years ago

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According to Bernoulli's Principle what statement below is How does a wing achieve

Blababa [14]

your answer would be C

by forcing air to move faster over the top of the wing thus creating higher pressure below the wing and lower pressure above the wing

hope this helped you- have a good day bro cya)

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3 years ago

A teacup on a spinning teacup ride takes 1.5 s to complete a revolution around the center of the platform. What is the centripet

arlik [135]

The correct answer is 53 meters per second squared

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3 years ago

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4. An object is thrown vertically upward with a speed of 25 m/s. How much time passes before it

vlada-n [284]

Answer:

Option b is correct: 4.1 s

Explanation:

Vertical Launch

An object launched thrown vertically upward where air resistance is negligible, reaches its maximum height in a time t, given by the equation:

$\displaystyle t=\frac{v_o}{g}\qquad\qquad[1]$

Where vo is the initial speed and g is the acceleration of gravity g=9.8 $m/s^2$ .

Once the object reaches that point, it starts a free-fall motion, whose speed is (downward) given by:

$v_f=g.t\qquad\qquad[2]$

The object considered in the question is thrown with vo=25 m/s. The time taken to reach the maximum height is given by [1]:

$\displaystyle t=\frac{25}{9.8}=2.551\ sec$

The object starts its falling motion and at some time, it has a speed of vf=15 m/s. Let's find the time by solving [2] for t:

$\displaystyle t=\frac{15}{9.8}=1.531\ sec$

The total time taken by the object to go up and down is

$t_t=2.551\ s+1.531\ s=4.081\ s$

a. This option is incorrect because it's far away from the answer.

d. This option is incorrect because it's far away from the answer.

b. This option is correct because it's a good approximation to the calculated answer.

e. This option is incorrect because it's far away from the answer.

c. This option is incorrect because it's far away from the answer.

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3 years ago