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3 years ago

What is the difference between reflection and refraction

Physics

1 answer:

sineoko [7]3 years ago

5 0

Answer:

Reflection is when light bounces off an object, while refraction is when light bends while passing through an object.

Explanation:

I just learned about this 2 weeks ago actually.

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energy is conserved. that is, it can never be created or destroyed. however, every time a conservation of energy occurs, some is

gladu [14]

Answer:

D. heat

Explanation:

7 0

4 years ago

Read 2 more answers

A car starting from a standstill accelerates at a rate of 4 meters per second squared. how far, in kilometers, will the car trav

ivanzaharov [21]

D=(1/2) x at^2. d=(1/2)(4)(20)^2. 2(400)=800 m. In kilometers, the answer is 0.8 km. A. You're welcome. ;)

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4 years ago

What is the resultant velocity

Rudik [331]

Answer:

Resultant velocity is the vector sum of all given individual velocities. Velocity is a vector because it has both speed and direction. There are many ways to calculate vector sums, such as using a vector addition diagram, but using trigonometry to calculate vector components is usually more efficient.

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3 years ago

Two long, parallel wires are separated by a distance of 2.50 cm. The force per unit length that each wire exerts on the other is

Kisachek [45]

Answer:

The current in the second wire is 8.33 A and the two currents are flowing in the opposite directions

Explanation:

Given that,

The separation between two long parallel wires, d = 2.5 cm

The force per unit length that each wire exerts on the other is, $\dfrac{F}{l}=4\times 10^{-5}\ N/m$

The current in one wire, $I_1=0.6\ A$

(a) The force per unit length of the wire is given by :

$\dfrac{F}{l}=\dfrac{\mu_oI_1I_2}{2\pi r}$

On putting all the values we get :

$4\times 10^{-5}=\dfrac{4\pi \times 10^{-7}\times 0.6I_2}{2\pi \times (2.5\times 10^{-2})}$

$I_2=8.33\ A$

So, the current in the second wire is 8.33 A.

(b) It is given that, both the wires repel each other, so the current in other wire is flowing in the opposite direction of the current in the first wire.

Hence, this is the required solution.

6 0

3 years ago

A mass tied to the end of a 1.0 m-long string is swinging back and forth From its lowest point, the mass moves 4 cm to the right

ehidna [41]

Answer:

a) 2seconds.

Explanation:

The period of oscillation will not change . It will still be 2seconds although the length was doubled to 8cm.

This is because the amplitude does not change oscillation time.

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3 years ago