1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
N76 [4]
3 years ago
9

2.44mW of incident 520 nm light is directed through a1 cm sample cuvette and 0.68 mW of Plight exits the sample what is the abso

rbance of the sample? ​
Engineering
1 answer:
Flura [38]3 years ago
7 0

Answer:

?/?

Explanation:??

You might be interested in
What is the difference between the pressure head at the end of a 150m long pipe of diameter 1m coming from the bottom of a reser
uysha [10]

Answer:

\frac {p_2- p_1}{\rho g} = 31.06 m

Explanation:

from bernoulli's theorem we have

\frac{p_1}{\rho g} + \frac{v_1^{2}}{2g} +z_1 = \frac{p_2}{\rho g} + \frac{v_2^{2}}{2g} +z_2  + h_f

we need to find pressure head difference i.e.

\frac {p_2- p_1}{\rho g} = (z_1 - z_2) - h_f

where h_f id head loss

h_f = \frac{flv^{2}}{D 2g}

velocity v =\frac{1}{n} * R^{2/3} S^{2/3}

S = \frac{\delta h}{L} = \frac{40}{150} = 0.267

hydraulic mean radius R =\frac{A}{P} = \frac{hw}{2h+w}

R = \frac{40*1}{2*40+1} = 0.493 m

so velocity is  =\frac{1}{0.013} * 0.493^{2/3} 0.267^{1/2}

v = 24.80 m/s

head loss

h_f = \frac{0.0019*150*24.80^{2}}{1* 2*9.81}

h_f  =8.93 m

pressure difference is

\frac {p_2- p_1}{\rho g} = 40 - 8.93 = 31.06 m

\frac {p_2- p_1}{\rho g} = 31.06 m

4 0
3 years ago
You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the rea
vovangra [49]

Answer: 33.35 minutes

Explanation:

A(t) = A(o) *(.5)^[t/(t1/2)]....equ1

Where

A(t) = geiger count after time t = 100

A(o) = initial geiger count = 400

(t1/2) = the half life of decay

t = time between geiger count = 66.7 minutes

Sub into equ 1

100=400(.5)^[66.7/(t1/2)

Equ becomes

.25= (.5)^[66.7/(t1/2)]

Take log of both sides

Log 0.25 = [66.7/(t1/2)] * log 0.5

66.7/(t1/2) = 2

(t1/2) = (66.7/2 ) = 33.35 minutes

3 0
3 years ago
A panel crimper cuts metal True or False
densk [106]

Answer:

True (They can cut through most metal panels, and probably heavier)

Explanation:

Hope this helps you as much as intended.

3 0
2 years ago
1 A power transmission includes a belt drive, a chain drive and a gear drive. Which of the following is the best arrangement bet
Setler79 [48]

Answer:d

Explanation:

(d) chain drive belt drive gear drive

3 0
3 years ago
Single point cutting tool removes material from a rotating work piece to generate a cylinder is called • Facing Tuming • Both 1
madam [21]

Answer:Turning

Explanation: Turning is the process in which the work piece is subjected to machining so that excess part is removed with the help of rotation by turning machine or lathe machine.The cutter tool is used for cutting the excess of the work piece and it  is mostly single-pointed so that give accurate removal of the excess of work piece.At times , according to the requirement multi-pointed tool is also used Therefore, the correct option is turning.

6 0
2 years ago
Other questions:
  • The elementary liquid-phase series reaction
    11·1 answer
  • The direction of rotation of a dc series motor or a universal motor connected to a dc power source A) depends on the polarities
    15·1 answer
  • A gear box’s shaft is made of a hollow circular steel tube with allowable yield stress equal to σa????????o???? . The shaft is l
    7·1 answer
  • Why is it a good idea to lock your doors while driving?<br> WRITER
    10·1 answer
  • Water flows through a tee in a horizontal pipe system. The velocity in the stem of the tee is 15 f t/s, and the diameter is 12 i
    10·1 answer
  • A transmitter has an output power of 0.1mW while the fiber has coupling loss of 12dB, attenuation of
    11·1 answer
  • FREEEEEE POOIIIINTS RIGHT HERE EVERYONE LEVEL UPPPP​
    13·2 answers
  • Plateau Creek carries 5.0 m^3 /s of water with a selenium (Se) concentration of 0.0015 mg/L. A farmer withdraws water at a certa
    12·1 answer
  • A retail business, owned by share holders and having centralized decision making for their multiple store locations is called:
    13·1 answer
  • Christopher has designed a fluid power system that repeatedly gets clogs. Which of the following objects should he choose to add
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!