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Vika [28.1K]
3 years ago
7

The angle between the reflected ray and the normal line is called the________________​

Physics
2 answers:
olga nikolaevna [1]3 years ago
6 0

Answer:

Angle of reflection

Explanation:

The angle between the reflected ray and the normal line is called the angle of reflection

lozanna [386]3 years ago
3 0

Answer:

Activity 2 Directions: Solve the following problems using Charles' Law,

1. A 3.8 mL of a gas in a container has a temperature of 2.0K. What would the volume be if the temperature becomes 8.0K?

2. If at 27°C the volume of a dry gas is 3.0 ml. What is the new temperature if the volume increased to 7.5 ml?

3. The temperature of the gas is 460,0 mL at 3.5°C. Calculate the new volume at 1.5°C

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Water drops fall from the edge of a roof at a steady rate. a fifth drop starts to fall just as the first drop hits the ground. a
Alchen [17]

The height of the roof is <u>3.57m</u>

Let the drops fall at a rate of 1 drop per t seconds. The first drop takes 5t seconds to reach the ground. The second drop takes 4t seconds to reach the bottom of the 1.00 m window, while the 3rd drop takes 3t s to reach the top of the window.

Calculate the distances traveled by the second and the third drops s₂ and s₃, which start from rest from the roof of the building.

s_2=\frac{1}{2} g(4t)^2=8gt^2\\  s_3=\frac{1}{2} g(3t)^2=(4.5)gt^2

The length of the window s is given by,

s=s_2-s_3\\ (1.00 m)=8gt^2-4.5gt^2=3.5gt^2\\ t^2=\frac{1.00 m}{(3.5)(9.8m/s^2)} =0.02915s^2

The first drop is at the bottom and it takes 5t seconds to reach down.

The height of the roof h is the distance traveled by the first drop and is given by,

h=\frac{1}{2} g(5t)^2=\frac{25t^2}{2g} =\frac{25(0.02915s^2)}{2(9.8m/s^2)} =3.57 m

the height of the roof is 3.57 m



8 0
4 years ago
Read 2 more answers
The armature windings of a dc motor have a resistance of 5.0 Ω. The motor is connected to a 120-V line, and when the motor reach
Snezhnost [94]

Answer:

The current in the motor in this case is 13.2 A

Explanation:

Given:

Resistance R = 5 Ω

Emf E = 120 V

Induced emf E _{induced} = 108 V

When motor run at half speed due to load increased then induced emf is also reduced to half of its value

So new induced emf in our case is given by,

E_{induced }  = \frac{108}{2} = 54 V

  I = \frac{V}{R}

Where V = E - E_{Induced }

  I = \frac{120-54}{5}

  I = 13.2 A

Therefore, the current in the motor in this case is 13.2 A

3 0
3 years ago
The Kentucky Derby is a 1¼ mile race. Mandaloun ran it in 1.52 minutes. Hot Rod Charlie ran at a speed of .79 miles per minute.
artcher [175]

Answer:

Mandaloun won the race.

Explanation:

First, we will calculate the time taken by the Hot Rod Charlie:

s = vt\\t = \frac{s}{v}

where,

t = time taken by Hot Rod Charlie = ?

s = distance covered = 1.25 miles

v = speed of Hot Rod Charlie = 0.79 miles/min

Therefore,

t = \frac{1.25\ miles}{0.79\ miles/min} \\t = 1.58 min

Since Hot Rod Charlie took more time (1.58 min) than the Mandaloun (1.52 min).

<u>Therefore Mandaloun won the race.</u>

6 0
3 years ago
What is Mass definition for physics
jolli1 [7]

Answer:

Scientific Definition of Mass Mass is the quantity of inertia (resistance to acceleration) possessed by an object or the proportion between force and acceleration referred to in Newton's Second Law of Motion (force equals mass times acceleration).

Explanation:

Again, Same Thing!

And Another Wendys Roast

4 0
3 years ago
Which is the function of a nucleus within a eukaryotic cell?
DerKrebs [107]
ANSWER
D) store genetic information that provides instructions for the cell
6 0
3 years ago
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