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mezya [45]
3 years ago
13

Help?! Please! Thank you!!!!!!!

Mathematics
1 answer:
rjkz [21]3 years ago
3 0
I think this is right. Hope it helps

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What is the angular velocity of a 6–foot pendulum that takes 3 seconds to complete an arc of 14.13 feet? Use 3.14 for π
iren2701 [21]
1) Calculate the whole arc (complete circumference):


Circumference = 2π*radius


radius = 6 foot


=> Circumference = 2 * 3.14 * 6 foot = 37.68


2) Calculate the time to make a whole round, by making a proportion with the two ratios:


 ratio 1 = x / 37.68 =


ratio 2 = 3 / 14.13


ratio 1 = ratio 2 =>

   x                  3s
----------  =   -----------
37.68 ft        14.13 ft


=> x = 3 * 37.68 / 14.13 = 8 s


3) Calcuate the angular velocity as the 2π rad (which is the total angle of a circle) divided by the time.


So the angular velocity is 2π rad / 8 s = 2*3.14 foot / 8 s = 0.785 rad / s



Answer: 0.785 rad / s


3 0
3 years ago
An energy bar company manufactures peanut butter and chocolate bars.
Ivenika [448]

Answer:

sold 120 chocolate bars

sold 140 peanut butter bars

Step-by-step explanation:

x = peanut butter bars

y = chocolate bars

x + y = 260, total lbs

0.25x + 0.30y = 71, money

solve double variable equation

multiply -4 on both sides for 2nd equation

-x + -1.2y = -284

add both equations together

-0.2y = -24

y = 120

x = 260 - 120

x = 140

sold 120 chocolate bars

sold 140 peanut butter bars

3 0
2 years ago
Which is the simplified form of the expression (6^-2•6^5)^-3
Arisa [49]

Answer:

1

Step-by-step explanation:

( {6}^{ - 2}  \times  {6}^{5} ) ^{ - 3}  \\  = ( {6}^{3} )^{ - 3}  \\  =  {6}^{0}  \\  = 1

6 0
3 years ago
Read 2 more answers
Liam earned a grade of 65% on his miltiple choice science final that had a total of 140 problmes. How many problems on the final
Vsevolod [243]

Answer:

49

Step-by-step explanation:

65% of 140

65/100 × 140

= 91 right

140 - 91

= 49 wrong

8 0
2 years ago
Does anyone know the answer to this??
Kipish [7]

Answer:

very good

Step-by-step explanation:

very good

8 0
3 years ago
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