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3 years ago

HELP ASAP!!

Physics

1 answer:

andriy [413]3 years ago

3 0

Answer:

This is false becuase different object weigh different

Thank you!

Explanation:

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Consider 3 polarizers. Polarizer 1 has a vertical transmission axis and polarizer 3 has a horizontal transmission axis. Taken to

kirill [66]

Answer:

Option D.) 0.09 I₀

Explanation:

The intensity, I, of a polarized light after passing through a polarizing filter is given by $I = I_{0} cos^{2} \theta$

$I_{0} =$ Original Intensity

$\theta =$ Angle between the direction of polarization and the axis of filter

After passing through the first polarizer, the initial intensity, $I_{o}$ is halved, i.e $I_{1} = \frac{I_{0} }{2}$

After passing through the second polarizer, the angle of polarization, θ = 30⁰

$I_{2} = I_{1} cos^{2} \theta$

$I_{2} = \frac{I_{0} }{2} cos^{2} 30\\I_{2} =\frac{3}{8} I_{0} \\I_{2} = 0.375 I_{0}$

After passing through the third polarizer, the angle of polarization, θ = 90⁰-30⁰ = 60⁰

$I_{3} = I_{2} cos^{2} \theta$

$I_{3} = 0.375I_{0} cos^{2} 60$

$I_{2} =0.09 I_{0}$

7 0

4 years ago

Please answer me my question

creativ13 [48]

Answer:

1299 N/m²

Explanation:

Applying,

P = ρgh............... Equation 1

Where P = pressure of water at the bottom of the container, ρ = density of water, h = height of water in the container, g = acceleration due to gravity.

but,

V = πr²h............ Equation 2

Where V = volume of water, r = radius of the container

make h the subject of the equation

h = V/πr².................. Equation 3

From the question,

Given: V = 200 liters, = 200000 cm³, r = 70 cm

Constant: π = 22/7

Substitute these values into equation 3

h = 200000/[(22/7)(70²)]

h = 12.99 cm

h = 0.1299 m

Also given

Constant: g = 10 m/s², ρ = 1000 kg/m³

Substitute these values into equation 1

P = 0.1299(10)(1000)

p = 1299 N/m²

3 0

3 years ago

How are sound waves different from light (and other electromagnetic, waves?

Blababa [14]

Sound waves travel faster

8 0

3 years ago

Sawyer received two tubes of solution at 10 a.m., four tubes of solution at 12 p.m., eight tubes of solution at 3 p.m. and six t

Reptile [31]

Using the division operation, the number of tubes gotten by each patient can be obtained by dividing 20 by 5. Hence, each patient will get 4 tubes of solution.

Tubes of solution received :

10 a.m = 2 tubes
12 p.m = 4 tubes
3 p.m = 8 tubes
6 p.m = 6 tubes

Total tubes received :

(2 tubes + 4 tubes + 8 tubes + 6 tubes) = 20 tubes

Number of patients = 5 patients

Number of tubes of solution gotten by each patient :

(Total tubes of solution ÷ number of patients)

Tubes of solution per patient = (20 ÷ 5) = 4 tubes

Therefore, each patient will get 4 tubes of solution.

Learn more : brainly.com/question/25339242

3 0

2 years ago

A girl coasts down a hill on a sled, reaching level ground at the bottom with a speed of 7.1 m/s. The coefficient of kinetic fri

Lelu [443]

Answer:

114.19186 m

Explanation:

v = Velocity of girl at bottom = 7.1 m/s

$\mu$ = Coefficient of kinetic friction = 0.045

g = Acceleration due to gravity = 9.81 m/s²

d = Distance

N = Normal force = 783 N

The weight of the sled and girl is considered as the sum of the frictional force and weight

Hence we use the following equation where the kinetic energy and potential energy are conserved

$\frac{1}{2}mv^2=\mu Nd\\\Rightarrow \frac{1}{2}\frac{783}{9.81}\times 7.1^2=0.045\times 783\times d\\\Rightarrow d=\frac{1}{2}\times \frac{783\times 7.1^2}{9.81\times 0.045\times 783}\\\Rightarrow d=114.19186\ m$

The sled travels 114.19186 m on the level ground before coming to a rest

5 0

3 years ago