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kolezko [41]
2 years ago
6

Look at picture and please help if i get one more wrong i can’t get to 80%

Physics
1 answer:
NemiM [27]2 years ago
3 0
A, B and C are all correct. They can be made from igneous, sedimentary or other metamorphic rock. I hope I’m not too late to answering!
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What is t = 0 s and t = 8 s? ​
Deffense [45]

Answer:

t=0 is t

t=8= 8t

Explanation:

because 0 is means "nothing" so that's why t=0 is t

7 0
3 years ago
Heat is distributed through the atmosphere by winds<br> True<br><br> False
amm1812

Answer:

True!

Explanation:

Hope this helps!

5 0
4 years ago
The graph below shows the velocity of a car over time.
jekas [21]

Answer:

D. Calculate the area under the graph.

Explanation:

The distance made during a particular period of time is calculated as (distance in m) = (velocity in m/s) * (time in s)

You can think of such a calculation as determining the area of a rectangle whose sides are velocity and time period. If you make the time period very very small, the rectangle will become a narrow "bar" - a bar with height determined by the average velocity during that corresponding short period of time. The area is, again, the distance made during that time. Now, you can cover the entire area under the curve using such narrow bars. Their areas adds up, approximately, to the total distance made over the entire span of motion. From this you can already see why the answer D is the correct one.

Going even further, one can make the rectangular bars arbitrarily narrow and cover the area under the curve with more and more of these. In fact, in the limit, this is something called a Riemann sum and leads to the definition of the Riemann integral. Using calculus, the area under a curve (hence the distance in this case) can be calculated precisely, under certain existence criteria.

3 0
4 years ago
Read 2 more answers
What is number 30,31 in this picture?
Maslowich
On question 30, that is a displacement- time graph (DT). On this type of graph the gradient is equal to the velocity. B has the steepest gradient, then A and finally C

Now velocity is a vector quantity so it has a direction and speed ( speed doesn't have a fixed direction.)

on the DT graph im going to assume that movement B is a positive velocity with A and C being negative. 
So by ranking these: A is the most negative, C is the least negative and B has to be the greatest as it is the only positive velocity. 

Q31, The same type of graph is present, by looking at the gradients we can rank the largest and smallest velocities- speeds in the case of the question. 
i'll skip my working out as its the same as before:

C, B, A and then D

the same idea as on Q30 applies to Q31 part b, 

D,C,B then A 
6 0
3 years ago
Is work done in this example: A student lifting a heavy backpack off of the floor.
vagabundo [1.1K]
I don't know what u mean
4 0
3 years ago
Read 2 more answers
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