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artcher [175]
4 years ago
10

Uniform circular motion is used in physics to describe the motion of an object traveling at a constant speed in a circle. The sp

eed of the object is called tangential velocity and it can be calculated using the formula above, where r is the radius of the circle and T is the time is takes for the object to make one complete circle, called a period. Which of the following formulas could be used to find the length of one period if you know the tangential velocity and the radius of the circle?

Mathematics
1 answer:
Ivanshal [37]4 years ago
6 0

Answer:

  B)  T = 2πr/v

Step-by-step explanation:

To solve the given equation for T, multiply it by T/v.

v=\dfrac{2\pi r}{T}\\\\v\dfrac{T}{v}=\dfrac{2\pi r}{T}\cdot\dfrac{T}{v}\\\\T=\dfrac{2\pi r}{v} \qquad\text{simplify}

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Find the surface area of the prism.
Yakvenalex [24]
I would say C is the answer
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3 years ago
Write the equation of the line that passes through (−2, 6) and (2, 14) in slope-intercept form. (2 points)
melisa1 [442]

Answer:

y = 4x + 14

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

To find the equation we must first find the slope of the line

Slope of the line using points (−2, 6) and (2, 14) is

m =  \frac{14 - 6}{2 + 2}  =  \frac{8}{2}  = 4

Now we use the slope and any of the points to find the equation of the line.

Equation of the line using point ( - 2, 6) and slope 4 is

y - 6 = 4(x + 2) \\ y  - 6 = 4x + 8 \\ y = 4x + 8 + 6

We have the final answer as

y = 4x + 14

Hope this helps you

8 0
4 years ago
Matteo is following this recipe to make a cake.
alexdok [17]

Answer:

48 ounces butter

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60 ounces of flour

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4 0
3 years ago
57 is 0.3% of what number? Use pencil and paper. Would you expect the answer to be a lot less than
jeka57 [31]

Answer:

57 is 0.3% of 19000

Step-by-step explanation:

57 = 0.3x (rewrite it into an equation!)

57/0.003 = x (solve)

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5 0
3 years ago
A boat heading out to sea starts out at Point AA, at a horizontal distance of 804 feet from a lighthouse/the shore. From that po
grigory [225]

Answer:

672 feets

Step-by-step explanation:

Using the solution diagram attached, the vertical height, h of the lighthouse ;

Using trigonometry :

Tanθ = opposite / Adjacent

Tan 2 = h / 804

h = tan 2 * 804

h = 28.076 feets

Using h, we can obtain the distance CB :

Tan θ = opposite / Adjacent

Tan 2 = 28.076 / CB

CB = 28.076 / Tan 12°

CB = 132.08860 feets

Distance between A and B

804 - 132.08860

= 671.9 feets

6 0
3 years ago
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