2 years ago

What keeps all of the planets in the solar system from leaving their orbits around the sun?.

1 answer:

6 0

It’s the gravity pull of the sun that makes them spin around 360 degrees
It’s all so why they say In a billion years the sun will smash into the sun
-facts :)

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A washing machine sits on the floor. How can you increase the force of friction on the washing machine without changing the surf

Vladimir79 [104]

Answer:

Push the washing machine harder onto the surface it sits upon, increasing friction between the two.

Explanation:

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3 years ago

A football coach sits on a sled while two of his players build their strength by dragging the sled across the field with ropes.

Jobisdone [24]

Answer:

F=507.7N

Explanation:

According to Newton's second law:

$\sum F=m.a$

in this case, the football players need to drag the coach at a constant velocity, thus means with no acceleration, so:

$\sum F=0\\\\-F_f+F_p*cos(\theta)=0\\\\$

there are 20 degrees between the two ropes that means each player exerts a force 10 degrees from the zero reference.

$F_p=2*F\\\\F=\frac{1000N}{2*cos(10)}\\\\F=507.7N$

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2 years ago

Grain is pored into a silo to be stored for later use. Due to the friction between pieces of grain as they rub against eachother

MariettaO [177]

Answer:

3.1×10⁻¹¹ N

Explanation:

Use Coulomb's law:

F = k q₁ q₂ / r²

F = (9×10⁹) (6.0×10⁻¹⁰) (2.3×10⁻¹⁵) / (0.02 m)²

F = 3.1×10⁻¹¹

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3 years ago

Why are some isotopes used as tracers?

sineoko [7]

<span>C. They decay at a predictable rate. IE carbon 14 decay to carbon 12 to understand how long ago something was alive.</span>

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3 years ago

Someone in a car going past you at the

Airida [17]

Answer:

the awnser is 46 because the square root of d in yo mouth is dis jis wit da stik on yo block cuz

Explanation:

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3 years ago