If you walk 4mi north and then 2mi south what is your total displacement?

Which of the following has the longest wavelength?

Georgia [21]

Radio wave is the longest wavelength

7 0

3 years ago

The power ratings of several motors are listed in the table. A 2 column table with 3 rows. The first column is labeled motor wit

Lapatulllka [165]

The statement " Brand-W motor does 7,640 N of your toughest work." can be truthfully use.

Advertisement Rules:

An advertiser can not compare its products using the other companies name.

An advertiser can not make the false statement in its advertisement.

Here, the brand-W has the power rating of 7,640 W that is less than brand-Y. Advertiser cannot compare his brand using the name of Brand X, Y, or Z.

Therefore, the statement " Brand-W motor does 7,640 N of your toughest work." can be truthfully use.

To know more about Advertisement Rules:

brainly.com/question/13679377

7 0

2 years ago

Please help 2.

Mariulka [41]

Answer:

The new volume of the balloon is 8.8 L

Explanation:

Charles's Law consists of the relationship between the volume and the temperature of a certain amount of ideal gas, which is kept at a constant pressure. This law establishes that the volume is directly proportional to the temperature of the gas, that is to say that if the temperature increases, the volume of the gas increases and that on the contrary if the temperature of the gas decreases, the volume decreases.

In other words, Charles's law states that when the amount of gas and pressure are kept constant, the ratio between the volume and the temperature will always have the same value:

$\frac{V}{T}=k$

Having a certain volume of gas V1 that is at a temperature T1, by varying the volume of gas to a new value V2, then the temperature will change to T2, and it will be fulfilled:

$\frac{V1}{T1}=\frac{V2}{T2}$

In this case:

V1= 8.5 L
T1= 294 K
V2= ?
T2= 305 K

Replacing:

$\frac{8.5 L}{294 K}=\frac{V2}{305 K}$

Solving:

$V2=305 K*\frac{8.5 L}{294 K}$

V2=8.8 L

<u><em>The new volume of the balloon is 8.8 L</em></u>

7 0

3 years ago

What is the minimum (non-zero) thickness ttt of the film that produces a strong reflection for green light with a wavelength of

scZoUnD [109]

Answer:

200 nm.

Explanation:

The minimum thickness can be found using the following equation:

$2t = \frac{m\lambda}{n}$

Where:

t: is the thickness =?

m: is the order of interference = 1 (since it is minimum)

n: is the refractive index = 1.25

λ: is the wavelength = 500 nm

$t = \frac{m\lambda}{2n} = \frac{500 nm}{2*1.25} = 200 nm$

Therefore, the minimum thickness is 200 nm.

I hope it helps you!

6 0

3 years ago

Elevated water tanks are used in a municipal water distribution system to provide adequate pressure. Compute the height (h) of t

Lemur [1.5K]

Answer:

a) h = 53.8 m, b) h_minimum = 28 m, h_maximum = 63.3 m

Explanation:

a) For this exercise let's use Bernoulli's equation.

The subscript 1 is for the tank and the subscript for the building

P₁ + ½ ρ g v₁² + ρ g y₁ = P₂ + ½ ρ g v₂² + ρ g y₂

In general, the water tanks are open to the atmosphere, so P1 = Patm, also the tanks are very large so the speed of the water surface is very small v₁=0 and as they give us the precious static, this it is when the keys are closed so the output velocity is zero, v₂= 0. The height of the floors in a building is y₂ = 12 m

we substitute in Bernoulli's equation

P_{atm} + 0 + ρ g h = P₂ + 0 + ρ g y₂

h = $\frac{(P_2 - P_{atm}) + \rho \ g \ y_2}{\rho \ g}$

h = $\frac{\Delta P}{\rho g}$ + y₂

indicate that the value of ΔP = 410 10³ Pa

we calculate

h = 410 10³ / (1000 9.8) + 12

h = 53.8 m

b) ask for the height range for the minimum and maximum pressure

h = $\frac{\Delta P}{\rho g}$ ΔP / rho g

minimum

h_minimum = 275 103/1000 9.8

h_minimum = 28 m

maximums

h_maximo = 620 103/1000 9.8

h_maximum = 63.3 m

8 0

3 years ago