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Lisa [10]
3 years ago
13

Why is coal considered a nonrenewable resource? Check all that apply.

Physics
2 answers:
Vsevolod [243]3 years ago
7 0

Answer: C and D are correct.

Explanation:

kvv77 [185]3 years ago
5 0
3. coal forms so slowly that we could use up the supply that exists now

4. coal is available in limited amounts
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A horizontal force of 200 n is applied to move a 55-kg cart (initially at rest) across a 10-m level surface. what is the final k
Vesnalui [34]
<span>Kinetic energy is the energy that is possessed by an object that is moving. It is calculated by one-half the product of the mass and the square of the velocity of the object. We need to determine the velocity of the cart that is moving. 
</span>
First, we use Newton's Second Law of motion;
<span>Force = ma 
200 = 55a 
a = 3.64 m/s^2 

Then, from the kinematic equation we calculate the velocity;
v^2 = v0^2 + 2ax

where v is the final velocity, v0 is the initial veocity (zero since it initially start at zero), a is the acceleration ( 3.64 m/s^2) and x is the distance traveled.

v^2 = 0^2 + 2 (3.64) (10) 
v^2 = 72.73 m^2 / s^2
v = 8.53 m / s 

KE = mv^2 / 2
KE = 1/2 (55) (8.53^2) 
KE= 2000 J</span>
7 0
3 years ago
Explain how the velocity of an object changes in respect to time.
blondinia [14]

Answer:

Is this your ans of this question

4 0
4 years ago
Read 2 more answers
What the other team has a player in the penalty box and they are down a member, it's called a its a hockey question
Basile [38]

Answer:

a powerplay for the other team, and a penalty kill for the team with the player in the box

Explanation:

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3 years ago
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An airplane travels 975 miles south from one airport to another at an average speed of 250 mph (miles per hour). How much time w
Maru [420]

Answer:

3.9 hours

Explanation:

7 0
3 years ago
Which is a unit of pressure? A. gram B. Kilopascals C. Newtons D. Kilograms
Finger [1]

B. Kilopascals.

A kilopascal equals to 1,000 pascals; and a pascal is equal to a force of 1 newton per square meter.

Meanwhile,

- a gram and a kilogram are both units of measurement for mass, and

- a newton is a unit of measurement for force.

6 0
3 years ago
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