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3 years ago

This project will allow you to “see” the difference between AC and DC.

Physics

2 answers:

Alenkasestr [34]3 years ago

7 0

I am confused what is this for

Temka [501]3 years ago

5 0

Answer: uhhhhhhh what is this for?

Explanation i so confused

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A. A light wave moves through glass (n=1.5) at an angle of 25°. What angle will it have when it moves from the glass into air (n

torisob [31]

PART A)

By Snell's law we know that

$n_1sin i = n_2 sin r$

here we know that

$n_1 = 1.5$

$i = 25 degree$

$n_2 = 1$

now from above equation we have

$1.5 sin25 = 1 sin r$

$r = 39.3 degree$

so it will refract by angle 39.3 degree

PART B)

Here as we can see that image formed on the other side of lens

So it is a real and inverted image

Also we can see that size of image is lesser than the size of object here

Here we can use concave mirror to form same type of real and inverted image

PART C)

As per the mirror formula we know that

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

$\frac{1}{d_i} + \frac{1}{60} = \frac{1}{20}$

$d_i = 30 cm$

so image will form at 30 cm from mirror

it is virtual image and smaller in size

3 0

4 years ago

Which two processes increase the motion of the molecules?

anzhelika [568]

The answer is 2 because a and b are slowing it down by condensing it and then freezing it so its not one, b and c are opposites because b slows it down whereas c speeds it up so its not 3, and number 4 is the same explanation for number 3
hope you pass :)

5 0

4 years ago

Average mass of a toy car(small, hot wheels)?

Tresset [83]

2.4 ounces is the average weight of a hot wheels car.

6 0

3 years ago

1. How much work is done by a person if he lifts a load of 500 kg upto a height of 2m?

iren [92.7K]

Explanation:

if we take g=9.8m/s^2

F=mg

m=500

F=500×9.8=4900N

h=2

so w=mgh

w=4900×2

=9800j

3 0

3 years ago

A 1000-kg car has 50,000 joules of kinetic energy. What is the speed?

djyliett [7]

K.E = 1/2mv^2

The kinetic energy is 50,000 J and the mass of the car is 10,000 kg.

50,000 J = 1/2(10,000kg)v^2
Solve for v (velocity)
50,000 J = 5,000 kg x v^2
10 = v^2
$\sqrt{10} = v$
about 3 m/s (in terms of significant figures)

4 0

3 years ago

Read 2 more answers