3 years ago

Scientific laws explain _________

Physics

1 answer:

sladkih [1.3K]3 years ago

5 0

Answer:

Answer:

Explanation:

Explanation:

I think its D.

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What is the frequency of a sound wave having a velocity of 341 meters/second and a wavelength of 0.8 meters?

Brums [2.3K]

We know, Frequency = speed / wavelength
f = 341 / 0.8
f = 426.25 Hz

In short, Your Answer would be 426.25 Hz

Hope this helps!

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3 years ago

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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:

<em>The minimum pressure car tire pressure is 300,000 Pa</em>

Explanation:

<u>Pressure</u>

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

What is the displacement of the object?

sveta [45]

Answer:

Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

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If all else stays the same, which would cause an increase in the gravitational force on a space shuttle?

maks197457 [2]

"decreasing the distance of the space shuttle from Earth"

F = Gm(1)m(2)/R²
where R is the distance between the 2 objects, as it decreases, the force increases.

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3 years ago

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Why are the orbits of planets only nearly circular and not perfectly circular?

Galina-37 [17]

Explanation:

this is my answer this is helpful for you

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