3 years ago

Where are the oldest rocks found ?

Physics

1 answer:

nignag [31]3 years ago

7 0

Answer:

zircons

Explanation:

they are over 4.375 billion years old

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the metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off. the s

Travka [436]

When the metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off, this is an example of resistance, which provides light and heat.

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3 years ago

A school bus moves slower and slower. Using what you have learned about forces, explain why the bus moves slower and slower.

MariettaO [177]

Explanation:

the weight of the people inside the bus

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What is the starting and final energy for a battery?

EleoNora [17]

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2 years ago

Roller coasters accelerates from initial speed of 6.0 M/S2 final speed of 70 M/S over four seconds. What is the acceleration?

choli [55]

Answer:

$a=16\ m/s^2$

Explanation:

<u>Motion With Constant Acceleration </u>

It's a type of motion in which the velocity of an object changes uniformly in time.

The formula to calculate the change of velocities is:

$v_f=v_o+at$

Where:

a = acceleration

vo = initial speed

vf = final speed

t = time

The roller coaster moves from vo=6 m/s to vf=70 m/s in t=4 seconds. To calculate the acceleration, solve for a:

$\displaystyle a=\frac{v_f-v_o}{t}$

$\displaystyle a=\frac{70-6}{4}=\frac{64}{4}$

$\boxed{a=16\ m/s^2}$

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3 years ago

Something that might happen because of global warming is: __________. *

gogolik [260]

Answer:

melting polar icecaps seems the best, hopes this helps!

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