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3 years ago

What property of light waves does the michelson-morley interferometer directly demonstrate?

1 answer:

8 0

The wave nature of light, due to the experiment having bright and dark bands corresponding to places where you have constructive and destructive interference.

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What component in a circuit does this symbol represent?

Makovka662 [10]

Answer:

C. AC power source

Explanation:

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4 years ago

¿Una persona de 60 corriendo a 4 m/s, tiene más energía cinética que un proyectil de 10 gramos a 300 m/s?

Svet_ta [14]

Explanation:

The question says that "Does a 60 kg person running at 4 m/s have more kinetic energy than a 10 gram projectile at 300 m/s ? "

Speed of a person is 4 m/s

Mass of a person is 60 kg

Kinetic energy of a person is : $K=\dfrac{1}{2}mv^2$

So,

$K=\dfrac{1}{2}\times 60\times 4^2\\\\K=480\ J$

Mass of a projectile is 10 grams or 0.01 kg

Speed of a projectile is 300 m/s

Kinetic energy of a projectile is :

$K=\dfrac{1}{2}mv^2$

$K=\dfrac{1}{2}\times 0.01\times (300)^2\\\\K=450\ J$

So, it is clear that the kinetic energy of a person is more than that of the kinetic energy of a projectile.

8 0

3 years ago

How did conflict between countries affect trade along the Silk Road?

Eva8 [605]

Answer:

A: It decreased trade because soldiers no longer protected the oases.

I took it on E2020. I hope I've helped. If you need further explanation, please comment below.

6 0

3 years ago

Read 2 more answers

Which energy transformation occurs in the core of a nuclear reactor?

Nataliya [291]

It's either A or B because it starts off as nuclear energy.

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3 years ago

Read 2 more answers

A toy car has a kinetic energy of 8 J. What is its kinetic energy after a frictional force of 0.5 N has acted on it for 6 m?

Nezavi [6.7K]

Answer:

Final kinetic energy, $KE_f=5\ J$

Explanation:

It is given that,

Kinetic energy of toy car, $KE_i = 8\ J$

Frictional force, F = 0.5 N

Distance, d = 6 m

We need to find the kinetic energy after this frictional force has acted on it. We know that frictional force is an opposing force. The work done by the toy car is given by :

$W=F\times d$