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Flura [38]
3 years ago
12

For this problem, the applied force P must be calculated such that the allowable stress of 180 MPa is not exceeded in either wir

e. The correct choice for P will be: For this problem, the applied force must be calculated such that the allowable stress of is not exceeded in either wire. The correct choice for will be: The larger value The smaller value The values of P will be the same in either wire None of the above
Physics
1 answer:
Maru [420]3 years ago
4 0

Answer:

we do not exceed that value, the force of having a value less than that calculated

Explanation:

Pressure is defined by

           P = F / A

           F = P A

           F = 180 10⁶ A

for an exact calculation the area of ​​the wire is needed

So that we do not exceed that value, the force of having a value less than that calculated

therefore the correct answer is "a smaller value"

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A 56.0kg ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.50 turns each
Arada [10]

Answer:

Net force = 129.4, Force as multiple of weight of her hand = 18.84

Explanation:

Given Data:

Total body weight = 56.0 kg   ;

no. of turns = 2.5/second        ;

hand to hand distance = 1.5m ;

weight of hand = 1.25% of body weight ;

Solution:

mass of hand = \frac{1.25}{100}*56 = 0.7kg ;

radius = d/2 = 1.5/2 = 0.75m     ;

Now we need to find velocity, as we know that velocity can be calculated by dividing distance by time

v = d/t = \frac{2.5*2*3.14*0.75}{1} = 11.775 m/s or 12 m/s;

a.

The formula to calculate force is given as

F = mv²/r = (0.7*11.775²)/0.75 = 129.4 N

b.

To calculate force as multiple of weight on her hand, we need to calculate the gravitational force W on her hand first.

W = gm = 9.81 * 0.7 = 6.867 N

Now the wieght on her hand can be represented by

\frac{Force_{net} }{weight of hand}  = 129.4 / 6.867 = 18.84

3 0
4 years ago
Calculate the average velocity of a car that travels 555 km north east in 3.7 hours
Vera_Pavlovna [14]

Your answer:

150 kilometer's per hour.

7 0
3 years ago
One student bangs two bricks together
Romashka-Z-Leto [24]

Answer:

This could be done if a stop watch is used to calculate the time taken to hear the echo and a rule should be used to calculate the distance between the bricks and the wall. Then divide distance by time

Explanation:

I hope this is what you need

PLEASE MAKE ME BRAINLIEST

7 0
4 years ago
If the current in a wire is directed upward, what is the direction of the magnetic field produced by the current?
Valentin [98]

Answer:

B. counterclockwise

Explanation:

We can solve the problem by using the right-hand rule:

- put your thumb finger of the right hand in the same direction of the current in the wire (upward)

- wrap the other fingers around the thumb

- the direction of the other fingers will give the direction of the magnetic field lines

By doing these steps, we see that the other fingers form concentric circles in a counterclockwise direction (seen from above), so this is the direction of the magnetic field lines.

4 0
3 years ago
Read 2 more answers
What are the best units for DENSITY of a solid like a rock or a lemon? *
Ulleksa [173]
You would use answer 2O g/cm3
4 0
3 years ago
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