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
nikitadnepr [17]
4 years ago
8

Why do we need to learn about median and mode?

Physics
1 answer:
siniylev [52]4 years ago
3 0
We need to learn about median and mode because they are both important in statistical data and statistical data is what shows us important information about the world around us.
You might be interested in
Science, pls!!
dem82 [27]

Answer:

I would say that the answer is B because it is the most reasonable one

Explanation:

5 0
3 years ago
Read 2 more answers
A 100 W incandescent lightbulb emits about 5 W of visible light. (The other 95 W are emitted as infrared radiation or lost as he
frutty [35]

Answer:

n = 1.89 x 10¹⁹ photons/s

Explanation:

given,

Power of bulb = 100 W

Visible light = 5 W

wavelength of the visible light = 600 nm

number of photons emitted per second

using formula of wavelength

\lambda = \dfrac{c}{\nu}

\nu= \dfrac{c}{\lambda}

\nu= \dfrac{3 \times 10^8}{600 \times 10^{-9}}

\nu=5 \times 10^{14}\ Hz

energy of photon

U = h υ

U = 6.63 x 10⁻³⁴ x 4 x 10¹⁴

U = 2.65 x 10⁻¹⁹ J

number of photon

n = \dfrac{P}{U}

n = \dfrac{5}{2.65 \times 10^{-19}}

n = 1.89 x 10¹⁹ photons/s

6 0
3 years ago
wo different electrical devices have the same power consumption, but one (device 1) is meant to be operated on 127 V AC and the
Ilya [14]

Answer:

a) R₂/R₁ = 0.3049

b) I₂ / I₁  =  1.81

c) (230)² / ( 127)² =  3.28

Explanation:

By definition  the power consumption is:

P = I²*R    ⇒  as  I = V/R   I² = (V/R)²    and  P = (V²/R²)*R

P = V²/R

P = power consumtion  

I = current

R = is the resistor

Case Device 1   Voltage 127 (V)

P₁  = V₁² /R₁     P₁  =  (127)²/ R₁

Case Device 2 Voltage  230 (V)

P₂  = ( 230)²/ R₂

As   P₁  =  P₂        (127)²/R₁  =  (230)²/R₂

(127)²/(230)²  =  R₂/R₁

a) R₂/R₁ = 0.3049

b)  P₁ = I₁²*R₁              P₂  =  I₂²*R₂

I₂² *R₂  =  I₁²*R₁

I₂² / I₁²   =  R₁/R₂

I₂² / I₁²   =  1/ 0.3049

I₂² / I₁²   =  3.2797

√  (I₂² / I₁² )   =  √3.2797

b) I₂ / I₁  =  1.81

c)  P₁  = V₁*I₁      ⇒   P₁ = V₁²/R₁      if we "use" the device in 230 (V)

P₁´  =  V₂² / R₁

P₁  =  (127)²/R₁      and     P₁´ = (230)²/ R₁

Then the increasing factor is:

c) (230)² / ( 127)² =  3.28

5 0
3 years ago
Which of these processes take place at the same temperature? freezing and condensation melting and sublimation condensation and
DENIUS [597]

condensation and vaporization

4 0
4 years ago
On a proton is 1.6×10`¹⁹. how many protons are in one coulomb of charge​
olga nikolaevna [1]

Answer: There are 6.25 \times 10^{18} protons present in one coulomb of charge​.

Explanation:

Given: Charge on proton = 1.6 \times 10^{-19} C

It is known that the charge on a proton is equal to the charge present on an electron.

Formula used to calculate number of protons is as follows.

Q = ne

where,

Q = charge considered

n = number of protons

e = charge on electron or proton

Substitute the values into above formula as follows.

Q = ne\\1 C = n \times 1.6 \times 10^{-19} C\\n = 0.625 \times 10^{19}\\= 6.25 \times 10^{18}

Thus, we can conclude that there are 6.25 \times 10^{18} protons present in one coulomb of charge​.

5 0
3 years ago
Other questions:
  • Write a hypothesis about how the height of the cylinder affects the temperature of the water. Use the "if . . . then . . . becau
    14·2 answers
  • A car going 50mph accelerates to pass a truck. five seconds later the car is going 80mph. calculate the acceleration of the car.
    15·2 answers
  • A particle confined to a motion along the x axis moves with a constant acceleration of 2.5m/s2. Its velocity at t=0s is 6m/s. Fi
    13·1 answer
  • Suppose that the emf from a rod moving in a magnetic field was used to supply the current to illuminate a light bulb in a circui
    5·1 answer
  • What is<br> volt equivalent to?<br> ohm<br><br><br> A) amps <br> B)degrees <br> C)ohms<br> D)volts
    10·2 answers
  • Anna will wear a black dress when she attends her cousin’s wedding. Which color(s) does the dress absorb?
    8·2 answers
  • At some distance from a point charge, the electric potential is 635.0 V and the magnitude of the electric field is 189.0 N/C. Fi
    11·1 answer
  • A system does 1.80×10^{8}J of work while 7.50×10^{8}J of heat transfer occurs to the environment. What is the change in internal
    13·1 answer
  • What is tomentous flower​
    9·1 answer
  • 7. An Archimedean screw is a screw within a closely fitting cover, so that water can be raised when the
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!