Sankey Diagrams
LED light
What is the efficiency of this LED light?
10%
20%
80%
100%
Feedback?​

Answer:10cm

Explanation:5 / .5=10

Answer:

1.96Ns

Explanation:

Impulse = Ft = m(v-u)

Impulse = Force * time

Impulse = mgt

Impulse = 10 * 9.8 * 0.02

Impulse = 98*0.02

Impulse = 1.98Ns

Hence the impulse exerted is 1.96Ns

Answer:

10m/s^2

Explanation:

Given data

velocity= 40m/s

time= 4 seconds

Acceleration a =????

We know that

a= velocity/time

substitute

a=40/4

a= 10m/s^2

Hence the acceleration will be 10m/s^2

Answer:

calcium carbonate is transformed into calcium sulfate

Explanation:

Limestone stones are formed by calcium carbonate (Ca Co3), when acid rain falls with a little H2SO2, a chemical reaction of the type

          Ca Co3 + H2SO4 → CO2 + H2O + CaSo4

Calcium sulfate is much weaker than alatium carbonate, which is why the stone tends to break under its weigh

Answer:

3 m/s^2

Explanation:

acceleration = vf-vi/t = (30 m/s-0 m/s)/10 s = 3 m/s^2

Answer:

95%

Explanation:

Answer:

0%

Explanation:

im not sure kasi i dont understand the question.....

Answer:

Explanation:

Newton's 2nd Law

F = ma

25 = (0.43)a

a = 58.14 m/s^2

Answer:

is that high school work??? cause I don't know it and I'm about to go to high school

Answer:

The momentum of bike is more.

Explanation:

Given that,

Mass of the kid, m = 100 kg

Speed of the bike, v = 10 m/s

The momentum of the kid is given by :

p = mv

So,

p = 100 kg × 10 m/s

p = 1000 kg-m/s

Mass of the truck, m = 5000 kg

Speed of the truck, v = 0.1 m/s

The momentum of the truck is given by :

p = 5000 kg × 0.1 m/s

= 500 kg-m/s

So, the momentum of the kid riding a bike is more than that of the truck.

Answer:

true

Explanation:

as long as it is the right conductive material

Answer:

A phase change is occuring; the liquid water is changing to gaseous water, or steam. On a molecular level, the intermolecular forces between the water molecules are decreasing. The heat is providing enough energy for the water molecules to overcome these attractive forces.

Explanation:

 A pure substance cannot physically be separated, and is made out of one atom (or molecule). Unlike a mixture, however, which are made out of two or more atoms or molecules. A solution in itself is the example of a mixture. (The composition of a pure substance being fixed, and a mixture's being varying depending on which.) And a solution branching off from a mixture into being either homogeneous mixtures or heterogeneous mixtures.

srry it kinda turned into a paragraph lol, feel free to add or take away anything :)

Answer:

you get struck by lightning

Explanation:

hide in ur house

Answer:

the first one is Primary

the second one I think it's Mature but I don't know

Answer:

F = 3.01 N

Explanation:

Given that,

Mass of a block, m = 2.75 kg

Force applied to the block, F = 5.11 N

It is directed 53.8° above horizontal.

We need to find the total force acting on the block. The force acting on it is given by :

[tex]F=F\cos\theta\\\\F=5.11\times \cos53.8\\F=3.01\ N[/tex]

So, 3.01 N of force is acting on the block.

3.01 works as the right answer

Answer:pretty sure it’s 3

Explanation:

Answer:

1) Time period

2) amplitude

3) Hertz or hz

4) Noise

5) frequency

6) infrasonic and ultrasonic

7) solid liquid and gas

8) A man

9) energy

10)1 vibration per minute

Answer: Time taken by an object to complete one oscillation is called time PERIOD.

Explanation:Hope this helps!! Brainlist?plz I need it

[tex] \sf• \: The \: current \: in \: a \: circuit \: is \: 5 \: amps. \: and \: resistance \: is \: 30 \: Ohms.[/tex]

[tex] \\ [/tex]

[tex] \sf{• \: The \: Potential \: Difference. }[/tex]

[tex] \\ [/tex]

[tex] \huge\bf{ \underline{ Solution:- }}[/tex]

[tex] \sf According \: to \: the \: question, [/tex]

[tex] \sf• \: Current \: (I) = 5 \: Amps.[/tex]

[tex] \sf• \: Resistance \: (R) = 30 \: Ω[/tex]

[tex] \sf{Potential \: difference \: means \: Voltage \: ( V).}[/tex]

[tex] \sf{We \: know \: that, }[/tex]

[tex] \bf \red{ \bigstar{ \: V = IR }}[/tex]

[tex] \rightarrow \sf V =5 \times 30[/tex]

[tex] \rightarrow \sf V =150[/tex]

[tex] \\ [/tex]

[tex] \sf \purple{Therefore, \: the \: potential \: difference \: is \: 150 \: v \: .}[/tex]

Answer:

[tex]a=4.03\ m/s^2[/tex]

Explanation:

Given that,

The mass of the motorbike and rider is 286 kg.

We need to find the acceleration of the motorbike at this moment in time.

Net force acting on the bike is given by :

F = 2000 N - 845 N = 1155 N

Let a be the acceleration of the motorbike. So,

[tex]a=\dfrac{F}{m}\\\\a=\dfrac{1155}{286}\\\\a=4.03\ m/s^2[/tex]

So, the acceleration of the motorbike is [tex]4.03\ m/s^2[/tex].

"thanks for the points!!! and have a  (terrible) day"  - puppetasap4 :)

Answer:

"thanks for the points!!! and have a  (terrible) day"  - puppetasap4 :)

Explanation:

The universe is a vast expanse of space.

Some components are planets, stars and galaxies.

hope that helped.

Answer:

It allows them to write better and more comprehensible research papers. As well as being able to communicate the relevance and impact of their ideas and discoveries.

Explanation:

Answer:

F_A =5.625*10^1^6N

Explanation:

From the question we are told that

50,000 years ago,

A giant 4.5 107-kg meteor

180-m-deep hole

20,000 m/s

Generally for this problem the energy change is given as

\triangle E=\frac{1}{2} mv^2 +mgd△E=

2

1

mv

2

+mgd

Having the potential and kinetic energy in place

Mathematically solving for Average forceF_AF

A

\triangle E=F_a*d△E=F

a

∗d

F_A =\frac{1/2* 4.5*10^7(20,000)^2-kg+4.5*10^7*9.81*160}{160}F

A

=

160

1/2∗4.5∗10

7

(20,000)

2

−kg+4.5∗10

7

∗9.81∗160

Therefore Average force F_AF

A

is given by

F_A =5.625*10^1^6N

Answer:

B ig lol

Explanation:

Answer:

Explanation:

P = mv  

m = P/v

m = .25/3 = .08 Kg ... A

Answer:

I have attached a picture of me explaining the answers in written format. Hope this helps, thank you !!

Answer:

One: either C or D. I can't give you a definite answer. See below.

Two: D

Explanation:

One

F = m * a

F = 895 N

a = 9.8

m = F/a

m = 895/9.8

m = 91.82

This turned out to be a very nasty little question. I don't know how you should answer it. The closest answer is C but is it close enough? You have to decide if you've had approximation questions before. If you have, C is the answer. If not then D is what you should choose.

Two

The answer is III and IV which makes it D

Answer:

195

Explanation:

Answer:

They both experienced the same force as they weigh the same amount

Newtonian physics

Explanation: