3 years ago

What is the effect of friction on a moving object

Physics

1 answer:

Angelina_Jolie [31]3 years ago

7 0

Answer:

The effect of friction on a moving object would cause the object to slow down, and eventually stop.

Explanation:

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The total weight of a car with passengers is 30,000N. The area of contact of each of the four tyres with the ground is 0.025m2.

vlabodo [156]

Answer:

The minimum pressure car tire pressure is 300,000 Pa

Explanation:

Pressure

It's a measure of the force exerted by an object per unit surface:

$\displaystyle P=\frac{F}{A}$

Where F is the force applied on a surface area A.

We are given the total weight of a car with passengers as Ft=30,000 N and we also know the area of contact of each tire with the ground as $A=0.025 m^2$ .

The minimum pressure each tire can have is when the total weight is evenly distributed in all four tires, thus F=Ft/4=7,500 N.

Calculating the pressure:

$\displaystyle P=\frac{7,500}{0.025}$

P=300,000 Pa

The minimum pressure car tire pressure is 300,000 Pa

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3 years ago

Dx= 7.14m and Dy = -7.55m What is the direction and magnitude of the vector

KengaRu [80]

The Magnitude of the Vector is 10.39m and the direction of the vector is - 46.7°.

Explanation:

GIven dx=7.14m and dy= -7.55m,

The Magnitude of the Vector= $\sqrt{dy^{2} +dx^{2} }$

Magnitude d= $\sqrt{(7.14)^{2} +(-7.55)^{2} }$ .

d= $\sqrt{50.97+57}$

d= $\sqrt{107.98}$

d= 10.39m.

Direction Ф = $tan^{-1}$ $\frac{dy}{dx}$

= $tan^{-1}$ $\frac{-7.55}{7.14}$

= $tan^{-1}$ (-1.06)

Ф = - 46.7°.

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3 years ago

Consider the substance represented by the heating curve. What is the MOST accurate conclusion can you draw about the vaporizatio

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The answer is D. it requires much more energy

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In group 13, the only metalloid, boron, is at the very top of the group. Explain why the rest of the group has metallic behavior

Advocard [28]

Since it a metalloid it has metal and nonmetal properties while the rest of the group are all metals.

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3 years ago

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Which of these best shows a change from potential to kinetic energy?

andrey2020 [161]

B, because if you let go of the spring then it will make kinetic energy, but when you stretch it it creates potential energy

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3 years ago