Power is measured in unit of Joules per second or

Entropy measures _____.<br> a. disorder<br> b. energy<br> c. heat transferred<br> d. force

11111nata11111 [884]

Entropy measures disorder and nothing else

8 0

3 years ago

Read 2 more answers

Answer these two questions please

Grace [21]

1.The answer is True
2.The answer is False

8 0

3 years ago

A soap bubble usually pops because some part of it becomes too thin due to evaporation or drainage of fluid. The change in thick

Lapatulllka [165]

Answer:

To understand why the change in thickness also changes the color of light the bubble reflects, we definitely know that

mλ = dsinθ

when d sin θ = mλ, we expect constructive interference

d = distance between the slits

θ = the angle relative to the incident direction

m = order of the interference

Hence, a change in the thickness will also cause a change in the wavelength, and as wavelength changes, various colors are generated.

The light's path difference is therefore generated as a result of the thickness variation of the soap bubble.

Explanation:

To understand why the change in thickness also changes the color of light the bubble reflects, we definitely know that

mλ = dsinθ

when d sin θ = mλ, we expect constructive interference

d = distance between the slits

θ = the angle relative to the incident direction

m = order of the interference

Hence, a change in the thickness will also cause a change in the wavelength, and as wavelength changes, various colors are generated.

The light's path difference is therefore generated as a result of the thickness variation of the soap bubble.

5 0

2 years ago

What is concave mirror

Licemer1 [7]

Answer:

A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex or concave. Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices.

Explanation:

8 0

3 years ago

Water is traveling through a horizontal pipe with a speed of 1.7 m/s and at a pressure of 205 kPa. This pipe is reduced to a new

Arturiano [62]

Answer:

The velocity is $v_2 = 6.8 \ m/s$

The pressure is $P_2 = 204978 Pa$

Explanation:

From the question we are told that

The speed at which water is travelling through is $v = 1.7 \ m/s$

The pressure is $P_1 = 205 k Pa = 205 *10^{3} \ Pa$

The diameter of the new pipe is $d = \frac{D}{2}$

Where D is the diameter of first pipe

According to the principal of continuity we have that

$A_1 v_1 = A_2 v_2$

Now $A_1$ is the area of the first pipe which is mathematically represented as

$A_1 = \pi \frac{D^2}{4}$

and $A_2$ is the area of the second pipe which is mathematically represented as

$A_2 = \pi \frac{d^2}{4}$

Recall $d = \frac{D}{2}$

$A_2 = \pi \frac{[ D^2]}{4 *4}$

$A_2 = \frac{A_1}{4}$

So $A_1 v_1 = \frac{A_1}{4} v_2$

substituting value

$1.7 = \frac{1}{4} * v_2$

$v_2 = 4 * 1.7$

$v_2 = 6.8 \ m/s$

According to Bernoulli's equation we have that

$P_1 + \rho \frac{v_1 ^2}{2} = P_2 + \rho \frac{v_2 ^2}{2}$

substituting values

$205 *10^{3 }+ \frac{1.7 ^2}{2} = P_2 + \frac{6.8 ^2}{2}$

$P_2 = 204978 Pa$

4 0

2 years ago