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2 years ago

WHEN A SOCCER PLAYER KICKS A BALL, THE BALL ACCELRATES. EXPLAIN WHAT CAUSES THIS ACCELERATION IN TERMS OF FORCES?

Chemistry

1 answer:

Nana76 [90]2 years ago

5 0

Answer:

When we kick the ball, the force we apply to it causes it to accelerate from a speed of 0 to a speed of dozens of kilometers per hour. When the ball is released from the foot, it begins to decelerate (negative acceleration) due to the force of friction that is exerted upon it (as we observed in the previous example).

Explanation:

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mars1129 [50]

Answer:

B. They are highly reactive.

Explanation:

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2 years ago

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A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 89 MPa (81.00 ksi). If the plate is

likoan [24]

Explanation:

The given data is as follows.

$K_{k}$ = 89 MPa, $\sigma$ = 336 MPa

Y = 0.92

Now, we will calculate the length of critical interior flaw as follows.

$a_{c} = \frac{1}{\pi}(\frac{K_{k}}{\sigma Y})^{2}$

= $\frac{1}{\pi}(\frac{89}{336 \times 0.92})^{2}$

= $\frac{656.38}{3.14}$

= 209.04 mm

Thus, we can conclude that minimum length of a surface crack that will lead to fracture is 209.04 mm.

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2 years ago

Where should you place the label on a line graph for the independent variable?

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The independent variable belongs on the x-axis (horizontal line) of the graph and the dependent variable belongs on the y-axis (vertical line).

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2 years ago

if we began with 32.0 grams of oxygen and all of the hydrogen that you need, how many grams of water can be made?

Elza [17]

36 gram of water can be made.

The molar mass of O is 16g and Hydrogen is 1g in H2O there is one oxygen only but in question is given 32g of oxygen so, 2 moles of oxygen should be there so it will become 32g that means 2H2O so overall 2[2*1+16] = 36g.

What is Balanced equation?

When number of moles of both the reactants and products are equal then it is known as balanced chemical equation.

To learn more about, Balanced chemical equation, visit:

https://brainly.in/question/29015204

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5 months ago

Question 1<br> 1 pts<br> How many mols of bromine are present in 35.7g of<br> Tin(IV) bromate?

sleet_krkn [62]

Answer:

n = 0.0814 mol

Explanation:

Given mass, m = 35.7g

The molar mass of Tin(IV) bromate, M = 438.33 g/mol

We need to find the number of moles of bromine. We know that,

No. of moles = given mass/molar mass

So,

$n=\dfrac{35.7}{438.33}\\\\n=0.0814\ mol$

So, there are 0.0814 moles of bromine in 35.7g of Tin(IV) bromate.

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2 years ago