How do we define energy efficiency?

A. The ratio of the actual output energy to the input energy

B. The ratio of the power gain to power loss

C. The product of input power and output power

D. The sum of potential and kinetic energy

Answers

Answer 1

Answer:

it is b bro that's what it is


Related Questions

What are indicative acts? FORENSICS

Answers

Answer:

Actions or behaviors that may have taken place before death.

Do you wanna know how I know? No.... You do not wanna know how I know that you know what I known that you know I know

Explanation:

You Know?

what is marketing according to AMA​

Answers

Answer:

The new 2007 AMA defini- tion is as follows: Marketing is the activity, set of institutions, and processes for creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large.

Explanation:

How many seconds are there in a calendar year,given that a calendar year has 365.24 days in it?

Answers

Answer:

31556736

Explanation:

Since there are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 365.24 days in a year, then you multiply all of those.

60*60*24*365.24 =

31556736

answer = 31.6 million seconds

earth yr - 365.24 days / 8,765 hours / 526,000 minutes / 31.6 million seconds

in humans what makes the sound vibration vibrate​

Answers

Answer:

sound vibration of spicker

The gradual temperature change from one season to the next is due to what? view attachment

Answers

Global warming jk part of the earth is either facing the sun or part of the sun or away from the sun

Which two factors affect the amount of force seen in objects?

Answers

Answer:thanks

Explanation:xixo

gv

If a tennis ball has a velocity of 18 m/s and a momentum of 1.06 kg • m/s, what is the mass of the tennis ball in grams? Round the answer to two significant figures.

Answers

Answer:

58 g

Explanation:

Momentum = mass* velocity

P=mv

P= 1.06 kg*m/s

M=?

V=18 m/s

1.06 kg*m/s=m(18m/s)

M=0.058 kg

0.058kg = 58 g

Answer:

59

Explanation:

edge 2021

A transformer has 1000 turns on the primary coil.
The voltage applied to the primary coil is 230V a.c,
How many turns are on the secondary coil if the output
voltage is 46 V a.c.?
A)20 B)200 C)2000 D4000 E)8000

Answers

Answer:

200

Explanation:

Given parameters:

Number of turns in primary coil  = 1000 turns

Primary voltage  = 230V

Secondary voltage  = 46V

Unknown:

Number of turns in secondary coil = ?

Solution:

To solve this problem, we have to use the expression for solving problems related with transformers;

   

        [tex]\frac{Vs}{Ns}[/tex]   = [tex]\frac{Vp}{Np}[/tex]  

Vs is the secondary voltage

Ns is the number of secondary turns

Vp is the primary voltage

Np is the number of primary turns

 Now insert the parameters and solve;

         [tex]\frac{46}{Ns}[/tex]   = [tex]\frac{230}{1000}[/tex]

          46 x 1000 = 230Ns

             Ns = 200

Which of the statements are true about the collision of two objects with different
masses based on Newton's laws of motion?
A. Each object experiences an equal and opposite force.
B. The more massive object will exert a greater force on the less massive object.
Each object will accelerate in an opposite direction from the other but at a
different rate.
D. The less massive object will accelerate due to the force of the collision, but the
more massive object will not.​

Answers

Answer:

A. TRUE

B. TRUE

C. It depends on the mass of both the objects

D. TRUE

What is an earthquake​

Answers

An earthquake is when the ground shakes.

Answer:

When a underground suddenly breaks along a fault it cause vibration it is called earthquake.

find the amount and the compound interest on rupees 10000 for 2 years at 5% per annum compounded annually​

Answers

Compound interest:

[tex]a = p( 1 + \frac{r}{n} ) { }^{nt} [/tex]

a = final amount

p = principal amount

r = rate of interest

t = time

n = no. of compounding periods per year

p = 10000

r = 5% = 5/100 = 0.05

t = 2

n = 1

[tex]a = 10000(1 + \frac{0.05}{1} ) {}^{2 \times 1} [/tex]

[tex]a = 10000(1 + 0.05) {}^{2} [/tex]

[tex]a = 10000(1.05) {}^{2} [/tex]

[tex]a = 10000(1.1025)[/tex]

[tex]a = 11025[/tex]

A car accelerates from rest at a rate of 3 m/s² for 4 seconds. How far did the car travel?
PLEASE help fasttt

Answers

Distance= distance(initial)+v(initial)*t+0.5at^2
D=0+0*4+0.5*3*4^2
D=24 m

Answer:

24m

Explanation:

Given parameters:

Initial velocity  = 0m/s

Acceleration  = 3m/s²

Time  = 4s

Unknown:

Distance covered  = ?

Solution:

To solve this problem, we apply the right motion equation:

             S = ut + [tex]\frac{1}{2}[/tex]at²

S is the distance

u is the initial velocity

t is the time taken

a is the acceleration;

        S  = (0 x 4) +  [tex]\frac{1}{2}[/tex] x 3 x 4²  

        S = 24m

What are four pieces of evidence for continental drift?

Answers

continents, paleoclimate indicators, truncated geologic features, and fossils:D
They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.

A car enters the freeway with a speed of 6.4 m/s and accelerates uniformly for 3.2 km in 3.5 min. How FAST (m/s) is the car moving after this time?

Answers

here i found this on socratic hope this helps

among 1 litre boiling water and red hot glowing nail which one has more amount of heat and why​

Answers

Answer: The Water

Explanation:

The boiling litre of water has more volume and so has more heated molecules per cubic metre so it will have a higher amount of heat than the glowing nail.

To practically test this, put the glowing nail into a litre of cold water and record the final temperature when the nail has cooled down. Repeat this with the boiling litre of water. You will notice a higher final temperature with the boiling water indicating that it had more heat.

If the force is applied to a car, then its acceleration will ___________ because of Newton's _____________.

Answers

increase; newton’s second law of motion

compare the 3 different types of waves

Answers

Answer:Mechanical waves, electromagnetic waves, and matter waves.

Explanation: does are the waves

please help .-. its for physics

Answers

Answer:

your answer is correct

calculate the height from from which a body is released from rest if its velocity just before hitting the ground is30m\s

Answers

Answer:

height = 45 m

Explanation:

Initial velocity = 0 m/s

Final velocity = 30 m/s

Acceleration due to gravity = +10m/s^2 ( because ball is going down )

Using the eqn of motion

[tex] {v}^{2} - {u}^{2} = 2gh[/tex]

where v= final velocity ; u = initial velocity ; g = acceleration due to gravity ; h = height

So,

[tex] {30}^{2} - {0}^{2} = 2 \times 10 \times h[/tex]

[tex] = > 20h = 900[/tex]

[tex] = > h = \frac{900}{20} = 45[/tex]

How can temperature influence the rate chemical reaction between an acid and a base that will make our rocket defy gravity and launch upward?

Answers

Answer:

Explanation:

Generally, an increase in temperature increases the rate of a chemical reaction. Consequently, when the temperature of a reaction is raised, the molecules present in the reaction interact faster by colliding with one another and surpassing the effective collision of such reaction to bring about a high reaction rate. Similarly, in the case of the rocket launch, the same process occurs as the temperature increase will cause an increase in the reaction rate leading the hydrogen from the acid to react explosively with the oxygen from the base to form water - this makes the rocket defy gravity and launch upward.

amp, is named after a person who was the person

Answers

Answer:

Explanation:

Named for 19th-century French physicist André-Marie Ampère, it represents a flow of one coulomb of electricity per second.

answer them all please!!

Answers

Answer:

1. stomach

2. arteries

3. trachea

4. spinal cord

What is the modern periodic table of elements?

A. A chart organizing all elements by their atomic mass

B. A list of all elements occuring in nature

C. A chart organizing all elements by their atomic number

D. A list of all elements created by humans

Answers

C is the correct answer
I agreee ^ with that person

What is the acceleration of an object with a mass of 367 kg when a net force of 183 N is applied to it

Answers

Answer:

[tex]0.5m/s^{2}[/tex]

Explanation:

F= m x a

a= [tex]\frac{F}{m}[/tex] =  [tex]\frac{183 N}{367 kg}[/tex]  = [tex]\frac{0.4986 N}{kg}[/tex] = [tex]\frac{0.4986 kg*m/s^{2} }{kg}[/tex] = [tex]0.5 m/s^{2}[/tex]

Hopefully, this is right!

Canyon walls are eroded at a rate of approximately:
Group of answer choices

A half a centimeter per day.

B half a centimeter per year.

C one centimeter per day.

D one centimeter per year.

Answers

B. Half a centimeter per year

God bless!! <3

1. A plane flying horizontally at an altitude of 490 meters and having a velocity of 250 meters per second east, drops a supply packet to a work crew on the ground. It falls freely without a parachute. [Assume no wind and negligible air resistance.] A. Calculate the time required for the packet to hit the ground. (25 pts)

Answers

Answer:

t = 10 s

Explanation:

Given :

Altitude, h = 490 m

Initial velocity of a plane, u = 250 m/s

To find :

The time required for the packet to hit the ground. When it hits the ground its velocity will be 0. Let t is the required time. It can be calculated as follows :

[tex]t=\sqrt{\dfrac{2h}{g}} \\\\t=\sqrt{\dfrac{2\times 490}{9.8}} \\\\t=10\ s[/tex]

So, it will take 10 s to reach the ground.

How are scientists able to predict when and where the next eclipse will occur?

Answers

Answer:

When the Earth and sun are perfectly lined up, then it will happen. They can tell when it's going to happen.

Explanation:

This is why it only happens in some places. Some days it's not sunny out, so it's not going to happen.

2. For every action there is an equal and opposite reaction. Which Newton's law is defined?​

Answers

Answer:

newtons 3rd law

Explanation:

newtons thirs law states for every action there is an equal and opposite reaction.

Answer:

Newton Third law states that for every action there is an equal and opposite reaction

What is the acceleration of the box?

Answers

Answer:

a=4,32m/s^2

Explanation:

Fnet = F1 - F2

= 12-1.2

= 10.8N

m=2.5kg

Fnet =ma

10.8=2.5a then divide both sides by 2.5 to get acceleration

why people bleed from nose while climbing uphill rapidly​

Answers

Answer:

because the presure it puts on your body same as if you go to deep in the water

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