A car is moving at a rate of 28 miles per hour and the diameter of its wheels is about 2 1/3 feet. Find the angular speed of the wheel in radians per minute.
Answers
Circumference
C = pi*d
C = 3.14*(2 + 1/3)
C = 7.326667
The circumference is roughly 7.32666 feet.
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Convert 7.32666 feet to miles
(7.32666 feet)*(1 mile/5280 feet) = 7.32666/5280 = 0.001387625 miles
7.32666 feet = 0.001387625 miles (approximate)
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(28 miles/1 hour)*(1 revolution/0.001387625 miles) = 28/0.001387625 = 20,178.3623097019 revolutions per hour
Now convert from "revolutions per hour" to "revolutions per minute"
(20,178.3623097019 rev/1 hour)*(1 hour/60 minutes) = 20,178.3623097019/60 = 336.306038495031
The final answer for part A) is 336.306038495031 revolutions per minute (this is approximate).
336.306038495031 rev/1 minute)*(2pi radians/1 rev) = 336.306038495031*2pi = 336.306038495031*2*3.14 = 2,112.0019217488
So the angular speed is roughly 2,112.0019217488 radians per minute
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Answers
0 m
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Answers
Answer: The correct option is (D)
Step-by-step explanation: We are given to find the following sum of the polynomials :
To find the required sum, we need to add the coefficients of the same unknown variables with equal powers.
The sum of the polynomials in (i) is as follows :
Thus, the required sum of the polynomials is
Option (D) is CORRECT.
First, get rid of the parentheses and combine like terms
(8x^2+x^2)(-9y^2-3y^2)(-4x-7x)
9x^2-12y^2-11x is your answer
Answers
119 702 432 641 372
Answers
702 ÷ 9 = 78
432 ÷ 9 = 48
641 ÷ 9 = 71 2/9
372 ÷ 9 = 41 3/9 ⇒ 41 1/3
702 and 432 are divisible by 9. The rest are not.
Answers
5
13
StartRoot 5 EndRoot
StartRoot 13 EndRoot
Answers
The required magnitude of the vector is √13. Option D is correct.
A graph is given, that shows the vector, the magnitude of the vector is to be determined.
What is vertex form?
Vector form is defined as representing any point in space that has both magnitude and direction. A point k in space is represented as a vector OKi + OKj, which denotes the vector line, OK joining the line from the origin O to the point k. The vector form is used to define a line or a plane in a 3D space.
From the figure,
given vector can be expressed as,
now the magnitude of vactor,
Thus, the required magnitude of the vector is √13. Option D is correct.
Learn more about vector form here:
#SPJ5
Answer:
D. sqrt 13
Step-by-step explanation:
took on edge :)