What is Energy in physics?

The quantity of heat energy that must be transferred to 2.25 kg of brass to raise its temperature from 20 °C to 240 °C is 195030 J

First, we shall list out the given parameters from the question. This is shown below:

The quantity of heat energy that must be transferred can be obtained as follow:

Q = MCΔT

= 2.25 × 394 × 220

= 195030 J

Thus, we can conclude quantity of heat energy that must be transferred is 195030 J

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The acceleration of the car is approximately -3.06 m/s^2.

To find the acceleration of the car, we can use the kinematic equation:

v^2 = u^2 + 2as

Where:

v = final velocity = 0 m/s

u = initial velocity = 14 m/s

a = acceleration (to be determined)

s = displacement = 32 m

Plugging in the values into the equation, we can solve for acceleration:

0^2 = 14^2 + 2a(32)

Simplifying:

0 = 196 + 64a

Rearranging the equation:

64a = -196

Dividing both sides by 64:

a = -196/64

a ≈ -3.06 m/s^2

This means that every second, the car's velocity decreases by 3.06 meters per second. The negative sign indicates that the acceleration is in the opposite direction of the initial velocity, opposing the car's motion and bringing it to a stop.

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Office.com should receive a 2/10 credit for the partial payment made on April 14. The outstanding balance is $6,100.

Outstanding balance is the amount of money owed on a loan or credit card after accounting for payments and credits applied to the account. It is the current balance of the account and is usually the principal amount plus any interest or fees that have accrued since the last payment was made. Outstanding balance is an important indicator of the current financial health of the borrower and is used to calculate the minimum payment due and the interest rate charged on the account.

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Answer:

Thank you very much!!!

Explanation:

Answer:

Explanation:

A elastic

Answer:

Option c.

Explanation:

Answer:

c and d

Explanation:

I got your back bro ;)

Answer:

C and D

Explanation:

Answer: B im sorry if its wrong

Explanation:

The cost of operation for an A.C for 10 hours per day for a month will be 71,100 francs.

Power is the amount of energy transferred or converted per unit time. The unit of power is the watt, equal to one joule per second. Power is a scalar quantity.

Cost of operation for 10 hours a day;

Daily consumption = 3kW x 10 hours

Daily Consumption = 30kW

Since 1kWH = 79 francs;

Daily consumption amount = 30 x 79 francs

Daily consumption amount = 2,370 francs

Therefore, the monthly consumption (using 30days) will be;

2,370 francs x 30 = 71,100 francs

In conclusion, 71,100 francs will be spent in a month (30 days) to run the 3kW rated A.C for 10 hours a day at 1kWH.

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Answer:

-Elasticity will determine how well the particles in the medium bounce back after being disturbed.

-Density will determine how fast the sound will travel; sound travels slower in denser mediums.

-Temperature will also determine how fast sound travels; the lower the temperature, the slower the sound will travel.

Answer:

c

Explanation:

Answer:

Its gonna be (Guided)

Have a nice day <3

Answer:

The correct answer is - 6.49 × 10^3 mm.

Explanation:

The correct scientific notation of the given subtraction problem is:

6.94 × 10^3 mm - 4.5 × 10^2 mm = _____.

The correct number of significant digits is

a. 6.94 × 10^3 mm = 3

b. 4.5 × 10^2 mm = 2

So subtracting the 6.94 × 10^3 mm - 4.5 × 10^2 mm

= 6940 - 450

= 6.49× 10^3 mm.

Answer:

6.5x 10^3 mm

Explanation:

In Asch's study referenced above, all the questions are answered below.

It states that conformity to land use objective contributes to economic stability in a residential community.

In areas that were not developed all at once or not well planned, individuals purchase vacant lots and set about building on their own homes. These areas suffer from the not having sense of conformity.

Asch measured number of times each individual has conformed to the majority views.  About 32% of individual participated who were placed and conformed with incorrect majority. Over 12 critical trials, 75% of individuals conformed at least once and 25% never conformed.

The reason for individuals to participate is because they have been interviewed after the experiment. Most of the people did not believe in conforming. They still go along due to group fear of being ridiculed. Some believed the group's answers were not correct.

There were two reasons to conform, one is to fit in the group and believed the groups are better informed than they are.

When compared, mostly the answers are found to be incorrect and not satisfying and conformity has increased.

The more difficult is the task, one goes for conformity. When an individual is allowed to answer in private, the conformity decreases.

There is a need to conform because there are fewer groups not so powerful as there is no fear of any rejection.

Thus, all the questions are answered.

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Histograms are graphs that display the distribution of your continuous data. ... measurements and want to understand the distribution of values and look for ... Download the CSV data file to make most of the histograms in this blog post: Histograms. In the field of statistics, we often use summary statistics to describe an entire ...

Answer: When a pathogen enters their colony, ants change their behavior to avoid the outbreak of disease. In this way, they protect the queen, brood and young workers from becoming ill. These results, from a study carried out in collaboration between the groups of Sylvia Cremer at the Institute of Science and Technology Austria (IST Austria) and of Laurent Keller at the University of Lausanne, are published today in the journal Science.

Explanation: search for it.

According to the question the magnetic field is -3.925 x 10⁻⁶ T.

A magnetic field is an invisible force field created by a magnet or a moving electric charge. This field is made up of magnetic lines of force that move outward from the magnet or electric charge and can interact with other magnets and electric charges. The magnitude and direction of the force can be determined by measuring the strength and direction of the magnetic field.

The magnetic field can be determined using the equation:
F = qv x B,
where F is the force, q is the particle's charge, v is its velocity, and B is the magnetic field.
We can rearrange this equation to solve for B:
B = F / (qv)
In our case, the charge of the particle is 80 μC, its velocity is 20iˆ km/s, and the force is given by F = ma = (10g)(-9.8jˆ m/s²) = -98 mN.
Substituting these values into the equation, we find that the magnetic field is:
B = -98 mN / (80 μC x (20iˆ km/s)) = -3.925 x 10⁻⁶ T.

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Answer:

B-A-C

Explanation:

The idea is to evaluate the slopes of the three graphs. Notice that the three graphs are a representation of position (x) as a function of time (t).

Then, the slope of those lines are giving information of the change in position over the change in time (rise over the run). For the graph with positive slope the velocity is positive, for those with negative slope (line going down) the velocity is negative. But we are asked to compare speeds, which are the magnitude  of each velocity (slope) so it is important to determine the graph with the largest slope (graph C), and that with the smallest (graph B)

Then the order is: B-A-C (third option answer option)

Answer:

with?

Explanation:

Answer:

the greater the height of an object the *greater* its gravitational potential energy

greater

To find

Which of the following has units of velocity

Explanation

The unit of velocity is m/s

Conclusion

So the correct option are

-120 m/s

9.8m/s downward

In precipitation, Rainwater can fall as either Liquid or Solid.

Precipitation is a part of the water cycle. Precipitation falls to the floor as snow and rain. It subsequently evaporates and rises back into the surroundings as a gas. In clouds, it turns back into a liquid or stable water, and it falls to Earth again

The water cycle shows the non-stop motion of water within the Earth and its surroundings. it's miles a complex system that consists of many one-of-a-kind techniques. Liquid water evaporates into water vapor and condenses.

There are four fundamental ranges in the water cycle. they are evaporation, condensation, precipitation, and collection. permit's examined every one of these ranges. Evaporation: that is whilst warm temperature from the sun causes water from oceans, lakes, streams, ice, and soils to upward push into the air and grow to be water vapor.

Disclaimer: your question is incomplete, please see below for the complete question.

Liquid

Steam cloud

2nd half

Steam

Solid

Cloud

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Answer:

Net force = 20 N - 7 N = 13 N downward.

Explanation:

Answer:

Ideas for Prototype Design  

Similar to a cardboard oven just smaller and solar powered

Preliminary Sketches (attach separate paper, if needed)  

Option A:  i gave the picture

____________________________________________________________

Advantages: Disadvantages:  

● the tin foil will attract the sun● if theres enough heat for the food to warm up

●the plastic will keep bugs and/or animal away from getting it ● it might take longer  

●the box gives the food something to be in instead of the ground  

Option B: i think im going to stay with my original plan i can always make changes

__________________________________________________________

More advantages and disadvantges

Advantages: Disadvantages:  

●reducing my carbon footprint by alot ● heat varies so the food my take really really long

●using no energy other than the sun  

__________________________________________________________

Which of the three designs will you move forward with? Explain your reasons for selecting this design.

I will be moving forward with option A bc i personally can't think of another way or design and i think option A has more advantages than disadvantages  

__________________________________________________________

Building the Prototype  

What modifications, if any, did you make to the basic design during the construction process?

I used skewers to hold the flap up

__________________________________________________________

Predictions  

Will your device warm the hot dog to a temperature of 165°F? How will your device do this?

Well i guess it depends n alot of things such as where i will place my solar cooker and the weather changes i will most likely put my solar cooker on the black paper because darker colors absorb more heat then lighter ones, then i will wait maybe 10 -20 minutes and check on my hotdog

__________________________________________________________

Will your device efficiently warm the hot dog in 20 to 25 minutes? How will your device do this?  so my device will do this by attracting the suns rays and energy towards the box

__________________________________________________________

Will your device reach a temperature well above that of its surroundings? How will your device do this?

I think so especially if i put it in direct sunlight around a darker surface and of course the aluminium foil will help with this as well

__________________________________________________________

Observations  

Record your observations and the results of the experimental tests of your device below. Temperature of the surroundings (in °F): ______68_______  

Maximum temperature reached inside the solar cooker (in °F): _____59_____

__________________________________________________________

i added a picture but i will also put the numbers here althought keep in mind u might want to switch them up because its based off of my temperatures

Use this table to record the internal temperature of the hot dog every 2 minutes. Use a separate sheet of  paper, if necessary.

time:                           Temperature (°F)

4:00                            20

4:02                            20

4:04                            25

4:06                            26

4:08                            30

4:10                            34

4:12                            38

4:14                            40

4:16                            44

4:18                            46

4:20                           50

4:22                           55

4:24                           57

4:26                           60

4:28                           65

4:33                           72

4:35                           75

4:37                           76

4:39                           80

__________________________________________________________

Evaluating Your Prototype  

What worked well?

i would say definitely the black paper and tin foil sin they attracted most of the suns energy

__________________________________________________________

Which features can be improved upon?

i think maybe if i did t on a different day it would have gotten hotter

__________________________________________________________

How could the overall design of this device be improved?  

Position the flap more so that the hotdogs can get more sun

Doing it on a hotter day

Letting it cook longer

__________________________________________________________

Why would this change be an improvement? What concepts related to thermal energy transfer is this  improvement based on?  

this change would be an improvement by the hotdogs getting warmed to the right temperature this is related to thermal energy by the position of the flap i think if i angled it more in an abtuse angle the sun would have transferred to the foil to the bottom foil with the hotdogs

__________________________________________________________

Sketch of Your Final Design  

Draw a well-labeled sketch of the final design.

i provided a sketch it should be the last picture

OKAY FINALLY PLZ DONT REORT THIS I WORKED SO HARD ON IT LAST TIME AND IT GOT DELETED IF U HAVE ANY QUESTIONS ABOUT THE PROJECT I WILL TRY TO HELP YOU IN THE COMMENTS THANK YOUUUU - ( if your wndering what grade i got on this got a 100 percent )

OH AND PEACE.

Answer:

I am simply adding another answer so the one above can get a brainliest

Explanation:

I do not care about the points that I will wind up getting for this and they are right here just answer with gibberish

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edit: in an attempt to return your points my question was taken down ill will return these

somehow

someway

sometime

If the universe were to suddenly begin shrinking rather than continuing to expand, it would have a significant effect on the cosmic microwave background radiation (CMB).

The CMB is the afterglow of the Big Bang and is observed as a nearly uniform background radiation in all directions. It is thought to have been emitted when the universe was about 380,000 years old and had cooled enough for neutral atoms to form.

If the universe were to suddenly begin shrinking, the photons in the CMB would lose energy as they travel through the contracting space. This would cause the CMB radiation to shift to shorter wavelengths, which is known as blue-shifting.

Therefore, the correct answer is B. It would blue-shift.

Answer:

Hello From your question  you already have the answers for  ( a ) and ( b ) hence I will provide the solution to option ( c )

answer :

a) 5.88 N

b) 0.452 s

c) 27.68 rad/s

Explanation:

Hoop radius ( R ) = 0.08 m

mass of hoop = 1.2 kg

height hoop descended ( h ) = 0.5 m

Calculate The angular velocity of the rotating hoop after it descends 0.5 m

since it is released from rest we will apply the law of conservation

mgh = 1/2 mv^2 + 1/2 * Ic * ω^2 ----- ( 1 )

where :  Ic (moment of inertia ) = m*R^2  ,  ω = angular velocity , v = Rω

Back to equation 1 above

mgh = m*R^2*ω^2  ------- ( 2 )

therefore angular velocity ( ω ) = \(\sqrt{\frac{gh}{R^2} }\)  ,     h = 0.5 m,  g = 9.81,  R = 0.08 m

∴ ω = 27.68 rad/s

A spring has an energy of 10.0 joules when stretched 0.200 metres from its equilibrium point.

The formula for calculating the force a spring produces is Fs=kx F s = k x where k is indeed an experimentally determined number known as the spring constant that indicates the force the spring exerts per metre of stretch or compression or x is indeed the distance the spring is compressed or stretched from its initial position.

|v| =(x2 + y2) is the formula to calculate the magnitude of the a vector (or two dimensions) v = (x, y). The Pythagorean theorem serves as the basis for this formula.

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The additional information needed to calculate the acceleration of the motorcycle is the time taken to complete the distance.

Acceleration is the amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).

The acceleration of a moving body can be calculated by dividing the change in velocity of the motion (∆V) by the time taken to complete the motion as follows:

Acceleration (m/s²) = change in velocity (m/s)/time(s)

According to this question, a motorcyclist is traveling in the positive direction at a velocity of 7.0 meters per second. She then increases her velocity to 9.0 meters per second. This means that the change in velocity {∆V} is 2m/s.

However, the time taken to complete the distance is still required to compute the acceleration of the motorcycle.

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As a result, when Andrew is moving at a speed of 31 m/s, his momentum is 2077 kg*m/s.

Kinetic energy has the following formula: K.E. = 1/2 m v2, where m is the object's mass and v is its square velocity. The kinetic energy is measured in kilogrammes-meters squared per second squared if the mass is measured in kilogrammes and the velocity is measured in metres per second.

An object's mass (m) and velocity (v) can be multiplied to find its momentum (p), which is written as:

p = m * v

Given that Andrew's mass is 67 kg and his velocity is 31 m/s, his momentum can be calculated as:

p = 67 kg * 31 m/s

p = 2077 kg*m/s

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Question:

Andrew is riding his bike up a hill. At some point, he stops and rests at the top of the hill. He then turns around and starts riding down the hill. When he reaches a velocity of 31 m/s, calculate his momentum. Andrew's mass is 67 kg.