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Airida [17]
3 years ago
11

If a jar wrench whose handle extends 17 cm from the center of the jar is attached to the lid, what is the minimum force required

to open the jar?
Mathematics
1 answer:
Mrac [35]3 years ago
7 0

Answer:

41.5 N

Step-by-step explanation:

Torque is given by:

τ = rF

Solved for force:

F = τ / r

The value of r is the distance from the end of the wrench to the center of the lid, which is:

r = (0.089m / 2) + 0.17m

= 0.2145m

Therefore:

F  = 8.9N∙m / 0.2145m

= 41.5N

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The perimeter of a rectangle is 38 units. The length is 13 units longer than the width. What are the dimensions of the rectangle
s2008m [1.1K]

Answer:

Step-by-step explanation:

P = 2(l +w)

Let width be x

Length = x + 13

P = 38

38 = 2(x + 13 + x)

38 = 2(2x + 13)

38 = 2x + 26

2x = 38 - 26

2x = 12

x = 12/2

x = 6unit

Width = 6units

Length = x + 13 = 6+13 = 19units

6 0
3 years ago
280 in the ratio 3:5
Sonja [21]

Answer:

105:175

Step-by-step explanation:

3+5 = 8

3/8 of 280 is 105.

5/8 of 280 is 175.

the ratio is 105:175

next we have to simplify it:

divide both sides by 5:

21:35 divide both sides by 7=

3:5

7 0
3 years ago
Convert 6.3 m to millimeters
Shalnov [3]

Answer:

6300 mm

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The angle ____ is the smallest positive coterminal angle with 915 degrees
olga55 [171]

Step-by-step explanation:

We can find the coterminal angle by simply adding or subtracting 360° to each angle. In this problem, we need to find the smallest positive coterminal angle with 915 degrees.

It can be calculated by adding or subtracting 360° to the given angle. For positive coterminal angle subtract 360° from 915°

915-360 = 555

555-360 = 195

The positive coterminal angles: 195°, 555°, 915°, 1275°, 1635°...

The negative coterminal angles: -165°, -525°, -885°, -1245°...

Hence, the angle<u> </u><em><u>195°</u></em> is the smallest positive coterminal angle with 915 degrees

8 0
3 years ago
Simplify the expression x^2+3x-28/x^2-7x+12
EleoNora [17]
X^2 + 3x - 28 factors to (X+7)(X-4)
X^2  - 7X + 12 factors to (X-4)(X-3)
Now we see that the equation is [(X+7)(X-4)]/[(X-4)(X-3)]
By dividing the top and bottom by (X-4), we see that the equation equals (X+7)/(X-3).
6 0
3 years ago
Read 2 more answers
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