Answer:
its energy of an objects motion due to the objects motion. kinetic energy depends on mass and speed
Explanation:
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<span>m^(- 5) = 1/35 → you know that: x^(- a) = 1/x^(+ a) = 1/x^a
1/m^5 = 1/35 → you take the inverse
m^5 = 35
[m^5]^(1/5) = 35^(1/5) → recall: (x^a)^b = x^(ab)
m^[5 * (1/5)] = 35^(1/5)
m^[1)] = 35^(1/5)
m = 35^(1/5)
The scientific notation is a number between 1 and 9 with few numbers after coma (point) completed by a power 10.
= [1.4 * 10^(3)] * [2.5 * 10^(- 6)] → you remove the brackets
= 1.4 * 10^(3) * 2.5 * 10^(- 6) → you order
= 1.4 * 2.5 * 10^(3) * 10^(- 6) → you make the multiplication
= 3.5 * 10^(3) * 10^(- 6) → recall: (x^a) * (x^b) = x^(a + b)
= 3.5 * 10^(3 - 6)
= 3.5 * 10^(- 3) ← answer C</span><span>
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We are given an object sliding down an incline with a friction force. A free-body diagram of the system is the following:
Now we will add the forces in the x-direction:
We will consider the forces that are in the direction of the movement as positive and the ones in the direction against the movement as negative. Plugging in the forces:
Now we solve for the friction force:
Multiplying both sides by -1:
Now we determine the x-component of the weight using the following triangle:
From the triangle we can use the function cosine as follows:
From this we can solve for the x-component of the weight by multiplying both sides by "mg":
Now we use this expression and replace it in the sum of forces:
Now we plug in the known values:
Solving the operations:
Therefore, the friction force is 171.5 Newtons.
C.) shaking a rope up and down
Well, the length of every day is 24 hours all over the world.
You must be talking about the length of daylight.
On the equator, the longest daylight (sun up in the sky) is just about
12 hours, twice a year, around March 21 and September 21.
At the north and south poles, the sun is up in the sky for SIX MONTHS.