All categories

3 years ago

Aray diagram is shown. What does the letter red line represent?

Physics

1 answer:

Fiesta28 [93]3 years ago

4 0

Answer:

Red line is reflected ray.

Explanation:

According to the given figure, the blue line represent the incident ray. It strikes the surface and reflection occurs. The dotted line shows normal.

After reflecting the surface, the ray of light is reflected. Red line shows the reflected light.

In this case, the laws of reflection follows i.e. the angle of incidence is equal to the angle of reflection.

You might be interested in

Rony fills a bucket with water and whirls it in a vertical circle to demonstrate that the water will not spill from the bucket a

Romashka-Z-Leto [24]

Answer:

0 N, 3.49 m/s

Explanation:

Draw a free body diagram for the bucket at the top of the swing. There are two forces acting on the bucket: weight and tension, both downwards.

If we take the sum of the forces in the radial direction, where towards the center is positive:

∑F = ma

W + T = m v² / r

The higher the velocity that Rony swings the bucket, the more tension there will be. The slowest he can swing it is when the tension is 0.

W = m v² / r

mg = m v² / r

g = v² / r

v = √(gr)

Given that r = 1.24 m:

v = √(9.8 m/s² × 1.24 m)

v = 3.49 m/s

8 0

3 years ago

In a simple RC circuit, at t=0 the switch is closed with the capacitor uncharged. If C=30µF, =50V and R=10k, what is the poten

sergij07 [2.7K]

Answer:

Voltage across the capacitor is 30 V and rate of energy across the capacitor is 0.06 W

Explanation:

As we know that the current in the circuit at given instant of time is

i = 2.0 mA

R = 10 k ohm

now we know by ohm's law

$V = iR$

$V = (2 mA)(10 kohm)$

$V = 20 volts$

so voltage across the capacitor + voltage across resistor = V

$V_c + 20 = 50$

$V_c = 30 V$

Now we know that

$U = \frac{q^2}{2C}$

here rate of change in energy of the capacitor is given as

$\frac{dU}{dt} = \frac{q}{C} \frac{dq}{dt}$

$\frac{dU}{dt} = (30)(2 mA)$

$\frac{dU}{dt} = 0.06 W$

3 0

3 years ago

Please provide the steps

elena-s [515]

Answer:

wA - T =mA(a)

second option

Explanation:

get step by step full answer from trusted experts

just join this wats up group

scan QR

post question

get step by step answer instantly

get good grade in exam

8 0

3 years ago

One of the longer sides of a kite is 39 feet. one of the shorter sides is 25 feet. half the length of the shorter diagonal is 15

pychu [463]

The area of a triangle is found by multiplying the height of the triangle by the length of the base and dividing them both by 2. The length of the shorter side in the equation is useless information, so just multiply 39 by 25 and divide that by 2. A=487.5 sq ft. Also, that's a pretty big kite.

8 0

3 years ago

Science Virtual Lab: Smithsonian Museum Of Natural History

Viefleur [7K]

Your answers are correct. You have to read the plaques in the virtual lab to find the answers. So it shows you read them.

1. billion

2. modern

3. Organism

4. Heights

5. clams

6. flowery

5 0

3 years ago