A machine converts 40% of electrical energy into mechanical energy and 60% into heat energy. What statement explains the law of conservation of energy?

a.Machines always convert only a part of electrical energy to another form of energy.

b.Electrical energy always produces heat energy.

c.The machine changes the form of the electrical energy but cannot create or destroy energy.

d.Electrical energy is always accompanied by mechanical energy.

Answer:

answer is C

Explanation:

just did this

Answer:

Pitch and loudness

C.

Explanation:

Answer:

5.4 seconds

Explanation:

use the formula v(final)= v(initial)+at

0=13.5-2.5t

-13.5=-2.5t

t=5.4

Answer:

F. jumping

Explanation:

you can't throw/toss yourself, you cant roll over water, catching?, you cant run over water, jumps are bigger than hops

Answer:

Human activities and natural processes have influenced the change in the global temperature by the following processes

1) Green house gas such as carbon dioxide, methane, ozone, nitrous oxide and fluorinated gases produced by the combustion of fossil fuels the use of  industrial chemicals, the production of coal, and natural gas

2) Deforestation which reduces the natural process of conversion of carbon dioxide to oxygen, thereby, increasing the greenhouse gases in the atmosphere

3) The accumulation of the greenhouse gases in the atmosphere results in the trapping of heat in the atmosphere, causing the atmospheric temperature to rise

4) Changes in the amount of energy produced by the Sun can result in an increase or decrease in the atmospheric temperature

5) Volcanic activity that occurs at a sufficiently large scale can produce sulfur dioxide that blocks the rays of the Sun from reaching the Earth, resulting in a change of atmospheric temperature.

Explanation:

Answer:

Green house gas such as carbon dioxide, methane, ozone, nitrous oxide and fluorinated gases produced by the combustion of fossil fuels the use of  industrial chemicals, the production of coal, and natural gas

Explanation:

please mark brainliest

Explanation:

Let the east direction to be i^ and north direction be j^.

Thus displacement of the man   S=8i^+6j^

So, magnitude of displacement  ∣S∣=62+82=100=10 m

800 J Got it right on edgenuity

"To do work, this truck uses energy stored in chemical

fuel and an electrical battery.

How much total energy does this truck put out?"

For your question "To do work, this truck uses energy stored in chemical fuel and an electrical battery. How much total energy does this truck put out?"

The answer would be 800 J

400 + 250 + 150 = 800

Answer: Li, S, F

Explanation:

They are all non-metallic elements

According to the electronic configuration, elements which will most likely form anions sulfur and fluorine .

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

Learn more about electronic configuration,here:

https://brainly.com/question/13497372

#SPJ3

Answer:

measuring

Explanation:

In international development, good governance is a way of measuring how public institutions conduct public affairs and manage public resources in a preferred way. Governance is "the process of decision-making and the process by which decisions are implemented"

Explanation:

way of measuring how public institutions conduct public affairs and manage public resources in a preferred way.

Answer:

more..................

Answer:

If you are referring units to the metric system, I think the answer would be less.

(I'm not completely sure)

Explanation:

I say this because for example, if you have a prescription for 5,000 mg of medicine, and upon getting it filled, the dosage than decimeters (dm), so you expect there to be more than one dm in a km. (Since you are going from a larger unit to a smaller unit, you multiply). Meters is larger than centimeters, so you expect your answer to be less than 7,225.

Hope this helps and makes sense! :D

Answer:

graph will be..

------------------------

I thank it’s true hope u have a good day

Answer:

B

Explanation:

Trust me

The best explanation of the muscles from the given list of statements would be tough strong tissues that provide energy to perform physical activities, therefore the correct answer is option B .

Exercise is an activity that includes the physical movements of the body and results in fitness, wellness , and healthiness of the person to protect and lower the risks of getting diseases. It allows the person to maintain a healthy weight .

As given in the problem statement we have to find out the best explanation for the muscles from the given list of statements ,

The greatest explanation for muscles from the selection of phrases provided would be that they are tough , powerful tissues that provide us the energy to engage in physical activity , hence choice B is the correct response .

To learn more about exercise here, refer to the link;

brainly.com/question/10007857

#SPJ6

Answer:

32m/s

Explanation:

obtained from V=vx square roo+ vy square root but all terms are squared.

Answer: 4 m/s

Explanation:

The scooter's velocity after 2 seconds of its start will be 4 m/s.

The first equation of motion is -

v = u + at

Given is Ms. Reitman's scooter that starts from rest and accelerates at

2 m/s².

We can write -

[a] = 2 m/s²

[t] = 2 s

Using the first equation of motion, we can write -

v = u + at

v = 0 + 2 x 2

v = 4 m/s

Therefore, the scooter's velocity after 2 seconds of its start will be 4 m/s.

To solve more questions on Kinematics, visit the link below-

https://brainly.com/question/27804030

#SPJ2

Answer: this is true

Answer:

it is actually false, the center of gravity is; the unique point where the weighted relative position of the distributed mass sums to zero, thus the center of mass doesn't have to be in the same spot as the center of gravity

Explanation:

Also i took the test and got it right.  

Answer: b. The United States Constitution

Explanation:

Montesquieu argued that the best form of government, was one where the legislative arm, executive arm, and judicial powers were separate. and in doing so helped kept each other in check to prevent any branch from becoming too powerful. Montesquieu’s separation of powers was not accurate when compared the government of England, But this was later adopted by Americans as the foundation of the U.S. Constitution.

Answer:

A) Conduction

Explanation:

The mitt keeps the heat from reaching your hand through conduction

Answer: A.conduction

Explanation: i got it right on my test!

False

Explantion: Energy is neither generated nor lost and can only be transferred from one form to another. But all energy is not transformed from one form to another. Some of the energy is radiated in the form of heat.

Answer:

Explanation:

True. It’s possible when energy changes form, some energy is lost to heat.

Answer:

122.5 meters

Explanation:

g = 9.8 m/s^2 (standard value of g). so the freely falling body fall during the first 5 seconds will fall 122.5 meters if there is no external force work on it in an standard environment

The distance traveled by the apply after being released is 127.45 m.

The given parameters;

time of motion of the apple, t = 5.1 s

initial velocity of the apple, u = 0

The distance traveled by the apply is calculated by applying second kinematic equation as shown below.

Assuming downward motion to be positive.

[tex]s = ut + \frac{1}{2} gt^2\\\\s = 0 + 0.5\times 9.8 \times 5.1^2\\\\s = 127.45 \ m[/tex]

Thus, the distance traveled by the apply after being released is 127.45 m.

Learn more here: https://brainly.com/question/2585397

When doing analysis of any kind, calculations can be assessed better using a graph.

A graph can be presented as pictorial form  the of data of numeric values in an organized manner which helps the user to represent large amount of data in visual form.

There are two types of questions and the features of graphs are interpretation of given graphs or selecting a graph based on a verbal description.

The bar graphs are the most commonly used type of graph, other graphs are dot plots, histograms, line graphs and scatterplots.

A Bar Graph can be presented as the graphical display of data using rectangular bars of different parameters like heights, The structure can be represented  in the y axis contains values, and the x axis contains categories or time periods.  

A dot plot is a simple graphical representation  which shows the frequency with which items appears in a data set and present data on the x axis.

For more details graph, visit

brainly.com/question/8660394

#SPJ2

Answer:

computer chips?

Explanation:

Answer:

They pass each other at 2415.79 m relative to the starting point.

Explanation:

Let s represent the distance moved by the car.

Since they are 900 m apart, it starts from rest and the truck moves at an acceleration of a = 3.2 m/s², we use

s - s₀ = ut + 1/2at²      u = initial velocity = 0 (since it starts from rest) and s₀ = 900

s = 900 + 1/2 × 3.2 m/s² × t²

s = 900 + 1.6t²

Let s' represent the distance moved by the motorcycle.

Since it starts from rest and the motorcycle moves at an acceleration of a = 5.1 m/s², we use

s' - s₀' = ut + 1/2at²      u = initial velocity = 0 (since it starts from rest) and s₀' = 0 (the starting point of the motorcycle)

s' = 0 + 1/2 × 5.1 m/s² × t²

s' = 2.55t²

At the point where they pass each other, s' = s

2.55t² = 900 + 1.6t²

collecting like terms, we find the time which they meet each other

2.55t² - 1.6t² = 900

0.95t² = 900

t² = 900/0.95

t = √(947.37)

t = 30.78 s

Substituting t into s', we have

s' = 2.55t²

= 2.55(30.78)²

= 2.55(947.37)

= 2415.79 m

So, they pass each other at 2415.79 m relative to the starting point.

Answer:

1.Turn your DC motor into a generator by disconnecting your motor load and replacing it with a prime mover (probably a petrol engine), then disconnect your DC supply lines from the motor and connect them to your electrical load (lighting system, heating units, etc.), taking care to convert the shunt windings of your

2.Start the motor-generator turning by whatever means you have elected to use, such as a gasoline engine. The motor-generator must spin at 5 to 10 percent over its rated speed. Allow the motor-generator to run for 1 to 2 minutes.

Explanation:

Answer:

1.56 seconds.

The rock will take 1.56 seconds to fall.

We have a rock.

We have to determine how long it will take for a rock to fall 12 meters.

The second equation of motion is -

S = ut + 1/2 at²

According to the question -

initial velocity = u = 0 m/s

acceleration = a = 9.8 m/s²

distance = S = 12 meters

Using the second equation of motion -

S = ut + 1/2 at²

12 = 0 + 0.5 x 9.8 x t²

12 = 4.9t²

t² = 2.45

t = 1.56 seconds

Hence, the rock will take 1.56 seconds to fall.

To solve more questions on Kinematics, visit the link below-

https://brainly.com/question/1476592

#SPJ2

Answer:980 N

Explanation:

Answer:

False

Explanation:

that is cohesion. adhesion is force between dissimilar molecules of a body