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2 years ago

A typical large orb spider has a mass of 0.50

1 answer:

3 0

The tensile strength of spider silk is about 1150 MPa, which is 1.15 x 10^9 N/m².

So given that the diameter of the spider silk is 0.15 mm or 1.5 x 10^-4 m. The cross sectional area is approximately: 

A = πr² = (3.14)(1.5 x 10^-4 / 2)² = 1.767 x 10^-8 m² 

So this means that the amount of force we can apply before the the silk thread is broken is: 

F = PA = (1.15 x 10^9)(1.767 x 10^-8) = 20.32 N 

F = mg, so m = F/g = (20.32)/(9.81) = 2.07 kg!!!

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Pls answer, and be clear on which one your answering, thank youuu!! Very thankful worth 30 points!! :) <333

sveta [45]

The mistake Shawna made was in her answer the 54 repeats so the bar should be over the .54 not the .545

7 0

3 years ago

Select the equivalent expression. 2^-4 = ?

mrs_skeptik [129]

Answer:

1/16

Step-by-step explanation:

This means 1/2x2x2x2 = 1/16

7 0

1 year ago

Find the values of x, y, and z. The diagram is not to scale.

Kruka [31]

we know that

The sum of the internal angles in the triangle must be $180$ degrees

see the attached figure with letters to better understand the problem

Step $1$

Find the measure of the angle x

In the triangle ABC

$63\°+36\°+x\°=180\°$

solve for x

$99\°+x\°=180\°$

$x\°=180\°-99\°$

$x=81\°$

therefore

the answer Part a) is

the measure of angle x is $81\°$

Step $2$

Find the measure of the angle z

we know that

$x+z=180\°$ --------> by supplementary angles

substitute the value of x

$81\°+z=180\°$

$z=180\°-81\°$

$z=99\°$

therefore

the answer Part b) is

the measure of angle z is $99\°$

Step $3$

Find the measure of the angle y

In the triangle ACD

$13\°+z\°+y\°=180\°$

solve for y

$13\°+99\°+y\°=180\°$

$112\°+y\°=180\°$

$y\°=180\°-112\°$

$y\°=68\°$

therefore

the answer Part c) is

the measure of angle y is $68\°$

5 0

2 years ago

Read 2 more answers

Even would be helpful if you just gave me the equation to solve it and I can do the rest. mart had a sale for labor day on DVD's

erastova [34]

x - price of a video tape

y - price of a DVD

$\left\{\begin{array}{ccc}2x+3y=134\\x+5y=179&|\text{subtract 5y from both sides}\end{array}\right\\\\\left\{\begin{array}{ccc}2x+3y=134\\x=179-5y&|\text{substitute to the first equation}\end{array}\right\\\\2(179-5y)+3y=134\qquad\text{use distributive property}\\\\(2)(179)+(2)(-5y)+3y=134\\\\358-10y+3y=134\qquad\text{subtract 358 from both sides}\\\\-7y=-224\qquad\text{divide both sides by (-7)}\\\\\boxed{y=32}\\\\\text{Put the value of y to the second equation}\\\\x=179-5(32)\\\\x=179-160\\\\\boxed{x=19}$

<h3>Answer: video tape cost $19 and DVD cost $32.</h3>

6 0

2 years ago

Find all y such that the distance between the points (8,10) and (4,y) is 20.

andriy [413]

Answer:

y = 394

Step-by-step explanation:

8 0

2 years ago