A 7.0 kg mass is lifted 4.0 m above the ground. Find the change in gravitational energy.

Answers

Answer 1

[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the concept of Graviatoonal Energy.

P = mgh

hence,

E = (7)*(9.8)*(4) = 274.4 joules

==> Energy = 274.4 J


Related Questions

Direction: Write TRUE if the statement is correct, and FALSE if it is not
correct

3. When light strikes a black surface, it is reflected by the surface and
nothing is absorbed.
4. Mirrors are used in telescopes because they have the ability to reflect
5. Transmission in the passing of light through some materials​

Answers

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

When light strikes a black surface, it is reflected by the surface and

nothing is absorbed    This would be False because black absorbs the light not reflect

Mirrors are used in telescopes because they have the ability to reflect

True? Telescopes designed with mirrors avoid the problems of refracting telescopes. Because the light is reflected from the front surface only, flaws and bubbles within the glass do not affect the path of the light

Transmission in the passing of light through some materials​

False? Some materials allow much of the light that falls on them to be transmitted through the material without being reflected. Materials that allow the transmission of light waves through them are called optically transparent. ... Materials which do not allow the transmission of any light wave frequencies are called opaque.

5. How do you represent the strength of a force in a free-body diagram?

Answers

You can represent these forces in a free-body diagram where we crush the book down to a point. You then position that tails of the force vectors on the point with the tips point in the direction of the interaction. The relative length of the arrows tells you about the relative strength of the forces.

have a nice day

How could nanotechnology best be used to improve the treatment of cancer with chemotherapy?

A. A nanometer-size carrier could be designed to bring the chemotherapy drugs only to cancer cells.

B. A nano carbon wire could be designed that would aid in the manufacture of chemotherapy drugs.

C. A quantum dot could be used to watch where the chemotherapy drugs go in the body.

D. Biomaterials could be made that would allow for cell growth within the cancer cells so that they are easier to find.

Answers

Answer: A

Explanation: Edg2020

Assignment
S
of
write the Symbol
Told, mercury and
Cooper, Iron,
Lead

Answers

Answer:

Check explanation

Explanation:

Gold - Au (Aurum)

Mercury - Hg (Hydrargyrum)

Copper - Cu (Cuprum)

Iron - Fe (Ferrum)

Lead - Pb (Plumbum)

These elements in the periodic table are some of the elements represented by letters not in line with their names.

This is because, these elements were known in ancient times and therefore, they are represented by letters from their ancient names.

What is electrical resistance and types of electrical resistance

Answers

Answer:

Electrical Resistance is a measure of the opposition to current flow in an electrical circuit

Types: variable resistance and set resistance

Explanation:

Standing on the surface of the earth you have a weight of 100 N. If you were to travel until you were 2
earth radii above the surface of the earth your weight would be?
b.) 11 N
c.) 25N
d.) 50 N
e.) about 100N
a.) 0N

Answers

Answer:

E

Explanation:

The SI unit for pressure is the

Answers

Answer:

The SI unit of pressure is Pascal .

Which of the following could be included in your gamer's creed that would help keep gamers safe?
A. I will work hard and play harder. Games are my life.
B. I will use privacy features that gaming sites provide to ensure I do not share personal information with strangers.
C. I will do whatever I can to win games I play online.
D. I will share the game equally with my friends and family.
swered

Answers

Answer:

The answer is B. I will use privacy features that gaming sites provide to ensure I do not share personal information with strangers.

Explanation:

It keeps you safe online

Answer: the answer is b

Explanation:

Which of the following settings describes a displacement vs. time graph that
looks like this?
Displacement
Time
Check all that apply
O A. Constant velocity
OB. Increasing velocity
I C. Zero acceleration
O D. Decreasing acceleration
I NEED HELP ASAP

Answers

Answer:

c and a

Explanation:

ape x

Si un conductor tiene una longitud de 4 metros y una sección de 2 mm^2 calcule su resistencia, si su coeficiente de resistividad es de 0.10(Ωmm^2/m)

Answers

Answer:

R = 0.2 Ω

Explanation:

Para aplicar el concepto de resistencia de un conductor electrico, consideramos la siguiente formula:

R = ρ . l / S

Donde l es la longitud del conductor

S la superficie

y ρ el coeficiente de resistividad

Primero necestiamos hacer ciertas conversiones:

ρ = 0.10 ×10⁻⁶ (Ω . m²/m)

S = 2 mm² → 2 ×10⁻⁶ m²

R = 0.10 ×10⁻⁶ (Ω . m²/m) . 4m / 2 ×10⁻⁶ m²

Dentro de la formula simplificamos las unidades, los metros de ρ con la longitud y ambos m². De esa forma la unidad de R queda en Ω (ohmios).

Resolvemos:

R = 0.10 ×10⁻⁶ Ω . 4 / 2 ×10⁻⁶

R = 0.2 Ω

how to calculate light year, minute and second?

Answers

Answer:

A light-year is the distance light travels in one year. How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It's about 5.88 trillion miles (9.5 trillion km).

Explanation:

4. When a key on piano is pressed, a sound is heard. What produces this sound?
A. the vibrating key of the piano
B.
The Vibrating String Of Piano
C. the finger pressing the piano key
D. the air molecules inside the piano

Answers

Answer:

D

Explanation:

since we press the key , air molecules ate presented and sound wave is formed what we hear.

Answer:

B

Explanation:

the vibrating string of piano

A coil with 55 loops has its flux change from 0 Wb to 0.0266 Wb in a certain amount of time, generating 5.22 V of EMF. How much time elapsed?

Answers

Answer:

0.280 s

Explanation:

I set it up as 5.22=(55)(0.0266)/x and then solved for x to be 2.80.

A jet plane travels at 40.8 km at an average speed of 340 m/s calculate how long this journey took- giveyour answer to the nearest minute

Answers

Answer:

[tex]2\ \text{minutes}[/tex]

Explanation:

d = Distance traveled = 40.8 km

s = Speed of jet = 340 m/s

Time is given by

[tex]t=\dfrac{d}{s}[/tex]

[tex]\Rightarrow t=\dfrac{40.8\times 10^3}{340}[/tex]

[tex]\Rightarrow t=120\ \text{s}[/tex]

[tex]\Rightarrow t=\dfrac{120}{60}=2\ \text{minutes}[/tex]

The time taken to complete the journey is [tex]2\ \text{minutes}[/tex].

3. A 40-gram ball of clay is dropped from a height, h, above a cup which is attached to a spring of spring force constant, k, of 25 N/m. The ball lands in the cup, and the spring compresses a distance, x. If x is 0.506 m, then what is the maximum speed of the ball?

Answers

Answer:

the maximum speed of the ball is 12.65 m/s

Explanation:

Given;

mass of the ball, m = 40 g = 0.04 kg

spring constant, k = 25 N/m

Apply the principle of conservation of energy;

The Elastic potential energy of the spring will be converted into Kinetic of the ball;

[tex]\frac{1}{2} kx^2 = \frac{1}{2} mv^2\\\\ kx^2 = mv^2\\\\v^2 = \frac{kx^2}{m} \\\\v = \sqrt{\frac{kx^2}{m}} \\\\v = \sqrt{\frac{(25)(0.506)^2}{0.04}} \\\\v = \sqrt{160.0225} \\\\v = 12.65 \ m/s[/tex]

Therefore, the maximum speed of the ball is 12.65 m/s

How can you stay safe on the Internet?
A. Create a screen name that includes your first and last name.
B. Do not talk to people you know online.
C. Do not share any personal information.
D. Share your parents' information.

Answers

Answer:

I believe the answer is C.

Explanation: Hope this helps and have a great day! :)

the correct answer to this question is c

A bus driver drove from Philadelphia to Washington DC. He drove the first 100km in 2 hours, the next 55km in 1 hour, and the final 75km in 2 hours. What is the average speek of the bus throughout the trip? a 77km/hr b 46km/hr c 81km/hr d 50km/hr

Answers

Answer:

b. 46 km/hr

Explanation:

Applying,

S' = d'/t'................... Equation 1

Where S' = Average speed of the bus, d' = Total distance covered by the bus, t' = Total time taken.

From the question,

d' = (100+55+75) km = 230 km

t' = (2+1+2) = 5 hours

Substitute these values into equation 1

S' = 230/5

S' = 46 km/hr.

Hence the correct option is b. 46 km/hr

10
5 points
What is the power of a small motor that can do 2500 J of work in 25 seconds?
0.01 Watts
100 Watts
1000 Watts
62500 Watts

Answers

Answer:

100 Watts

Explanation:

Energy can be defined as the ability (capacity) to do work.

Given the following data;

Energy = 2500 J

Time = 25 seconds

To find the power of the motor;

Power = energy/time

Substituting into the formula, we have;

Power = 2500/25

Power = 100 Watts

Tell the difference between an internal and an external influence and give 1 examples of each.

Answers

Answer:

Si tienen diferencia

Explanation: Internas: Proviene de la herencia; el legado genético que las personas reciben de sus padres.

Externa: Provienen de las experiencias personales frente

al mundo exterior

compare and contrast current and static electricity plz help.

Answers

Static

Type of electron movement: random

path of electrons: unpredictable

duration flow: short

usefulness: stattionery objects

Current

Type of electron movement: steady in a given direction

Path of electrons: can be directed

Duration of flow: long

Usefulness: can power appliances

Note: This is a few notes I know about it sorry if its not what you are looking for This is all the info I have

A force of 20 newtons is used to much a box a distance of 2 meters. How much work was done?

Answers

Answer:

40 J

Explanation:

In the case of a rectilinear movement, the work is calculated as the product of Force (N) * movement (m). In your case, unless the angle between the force vector and the displacement vector is different from 0, the work is:

20 N * 2 m = 40 J

I need help
With this

Answers

Answer:

dfvgxbcjnhmv,kbl

Explanation:

fvgbnhjmk

True or False. Can Metalloids conduct electricity under certain conditions?

Answers

can metalloids conduct electricity under certain conditions?

true

Dos masas con valores de 8kg y 12kg cada una se encuentran separadas por una distancia de 1m. Determinar la fuerza de atraccion gravitacional entre ellas si se compara con el valor de sus pesos Como es este valor?

Answers

The question is: Two masses with values ​​of 8kg and 12kg each are separated by a distance of 1m. Determine the force of gravitational attraction between them if compared with the value of their weights. What is this value?

Answer: The force of gravitational attraction between them if compared with the value of their weights is [tex]640.704 \times 10^{-11} N[/tex].

Explanation:

Given: [tex]m_{1}[/tex] = 8 kg,       [tex]m_{2}[/tex] = 12 kg

Distance = 1 m

Formula used is as follows.

[tex]F = \frac{G \times m_{1} \times m_{2}}{r^{2}}[/tex]

where,

F = force of gravitational attraction

G = gravitational constant = [tex]6.674 \times 10^{-11} N m^{2}/kg^{2}[/tex]

[tex]m_{1}[/tex] = mass of object 1

[tex]m_{2}[/tex] = mass of object 2

r = distance between the centers of these two objects

Substitute the values into above formula as follows.

[tex]F = \frac{G \times m_{1} \times m_{2}}{r^{2}}\\= \frac{6.674 \times 10^{-11} Nm^{2}/kg^{2} \times 8 kg \times 12 kg}{(1 m)^{2}}\\= 640.704 \times 10^{-11} N[/tex]

Thus, we can conclude that the force of gravitational attraction between them if compared with the value of their weights is [tex]640.704 \times 10^{-11} N[/tex].

PLEASE HELP THIS IS BIG. ITS 2ND GRADE WORK BTW. HELP FOR CROWN AND POINTS!!!!

What did Ben Franklin show with his famous kite experiment?
that lightning is electricity
how sounds could be recorded
that electromagnetic waves could be found and turned into sound energy
how to create a battery

Answers

Answer:

your answer is A

Explanation:

brainliest plzzzz

Answer:

c is the correct answer

1. What are the two main gases responsible for lowering down the pH.
2. Can we control an acid rain? Why or Why not?
3. When pH changes from 6 to 3, how many times does acidity increase?

Answers

Answer:

1. The three main acidic gases responsible for lowering the pH of rainwater are non-metal oxides produced by the burning of fossil fuels like coal, oil and natural gas. Sulfur dioxide is produced when fossil fuels containing sulfur impurities are burned.

2. A great way to reduce acid rain is to produce energy without using fossil fuels. Instead, people can use renewable energy sources, such as solar and wind power. Renewable energy sources help reduce acid rain because they produce much less pollution.

3. The pH scale is logarithmic, meaning that an increase or decrease of an integer value changes the concentration by a tenfold. For example, a pH of 3 is ten times more acidic than a pH of 4.

What is the efficiency of a car's engine when heat input is 400,000 joules and
the waste heat is 300,000 joules?
O A. 25%
B. 35%
O C. 75%
D. 85%

Answers

Either 25% or 75%. does it to how much is wasted or the difference in the input and waste?

Answer: A. 25%

Explanation: Ap3x

Where is an object's center of gravity?

Answers

The center of gravity (CG) location is the average location of all the weights of an object. The center of gravity is the balance point of an object, also expressed as the point where all the mass appears to be located.

The location of the body's center of gravity is where its mass is concentrated. The human body's center of gravity is a fictitious position where the gravitational force is claimed to appear to act (COG). It is where the body's overall bulk seems to be concentrated.

What is an object's center of gravity?

The center of gravity of an object is the point at which its weight is most evenly distributed. Any object's travel through space may be completely explained in terms of how its center of gravity moves from one location to another and, if it is free to spin, how it rotates around that center of gravity.

Therefore, In physics, the center of gravity is a hypothetical location within a solid where, for the sake of convenience in some computations, the body's whole weight may be assumed to be concentrated.

Learn more about center of gravity here:

https://brainly.com/question/17409320

#SPJ2

The mirror is a opaque object. When light hits the mirror, a small amount is reflected and converted to thermal energy, while most of the light waves are

1. absorbed
2. transmitted
3. reflected

Answers

Answer : All of the above

Answer:

3.When light incidents on a mirror  , the most of the light waves are reflected.

Explanation:

What is mirror ?Mirror is a simple device that reflects light. It is an opaque object.It allows reflection but also absorb some amount of light waves.It also convert small amount of reflected rays in thermal energy.

https://brainly.com/question/10507280

#SPJ2

(please help asap 15 points) Ocean tides are created by...
the spinning of the Earth
heating of the water from
the Sun gravitational pull from the moon and Sun
All of the Above

Answers

all of the above..........
It’s all the above lol
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How does the company, Durex, build credibility as a company in this video, besides the information you addressed above? Think specifically about what kind of personality this commercial suggests that the company has as a brand. Please solve i need help. What are the results of (3 + 1) + 27 9 = 8. What type of editing can be described as computer editing that allows dragging and dropping clips of video or audio with transitions and effects being easy to apply?A. interpretive editingB. Foley editingC. linear editingD. non-linear editing please help me im so stuck Are SUT and XWV similar? If so, state the reason and the similarity statement.Question 4 options:A) Yes; SSS; SUT XWVB) Yes; SAS; SUT XWVC) Yes; SSS; TSU XWVD) The triangles aren't similar. what is the measure of each angle You and three of your friends go parasailing for 128.40 you split the cost evenly. How much does each person pay? Lucia's first language is Italian. As she reads a novel, she comes across this sentence. Ella tired of the crowds of well-wishers and sneaked into the coat closet for a moment of solitude. How might Lucia best unlock the meaning of the word solitude? Lucia should consider the meaning of the Italian word solitudine, which has the same cognate. Lucia should consider the meaning of the word solidify, which has the same prefix as solitude. Lucia should consider the meaning of the word gratitude, which has the same suffix as solitude. Lucia should consider the meaning of the word altitude, which rhymes with solitude. The financial statements for Castile Products, Inc., are given below: Castile Products, Inc. Balance Sheet December 31 Assets Current assets: Cash $ 21,000 Accounts receivable, net 220,000 Merchandise inventory 320,000 Prepaid expenses 8,000 Total current assets 569,000 Property and equipment, net 860,000 Total assets $ 1,429,000 Liabilities and Stockholders' Equity Liabilities: Current liabilities $ 280,000 Bonds payable, 9% 390,000 Total liabilities 670,000 Stockholders equity: Common stock, $10 par value $ 110,000 Retained earnings 649,000 Total stockholders equity 759,000 Total liabilities and equity $ 1,429,000Castile Products, Inc. Income Statement For the Year Ended December 31 Sales $ 3,010,000 Cost of goods sold 1,110,000 Gross margin 1,900,000 Selling and administrative expenses 640,000 Net operating income 1,260,000 Interest expense 35,100 Net income before taxes 1,224,900 Income taxes (30%) 367,470 Net income $ 857,430 Account balances at the beginning of the year were: accounts receivable, $210,000; and inventory, $280,000. All sales were on account.Required: Compute the following financial data and ratios: 1. Working capital. 2. Current Ratio (round to 2 decimal places) 3. Acid-Test Ratio (round to 2 decimal places) 4. Debt-to-equity Ratio (round to 2 decimal places) 5. Times interest earned Ratio (2 decimal places) 6. Average collection period (days) 7. Average sale period (days) 8. Operating cycle (Days; round intermediate calculations and final answer to 1 decimal place) Between which two numbers does 11 lie on a number line? A 10 and 11 B 3 and 4 C 5 and 6 D 4 and 5 Helppppppppppppppppp What do you get if you cross two different species? Depending upon the species, you might end up with a grolar bear, a wolfdog, or a Savannah cat, among many others. What do these animals have in common? They're hybrids. Sometimes hybrids happen naturally in the wild, but usually, hybrids are the result of humans selectively breeding animals.Grolar bears and pizzlies are the result of crossing polar bears and grizzly bears. These hybrids were first seen in zoos, as the bears' natural habitats did not normally overlap. Recently, these hybrids have started appearing in the wild. Due to climate change, the bears' once-separate habitats are beginning to overlap. Bigger and more aggressive than their parents, grolar bears and pizzlies could pose a risk to natural habitats and humans.Wolfdogs are, as their name suggests, the result of crossing a wolf with a domestic dog. Bred for the pet trade, these hybrids do not often happen in the wild. Wolfdogs do not make good pets, however, as they can be destructive and aggressive. Many states have outlawed keeping wolfdogs because they can pose a danger to people.Savannah cats are another example of human-made hybrids that were developed to be pets. Savannahs are the result of crossing a small wildcat called a serval with a domestic housecat. They look like miniature versions of the wildcat, which is why many people like keeping them as pets. Like the wolfdog, however, Savannahs do not make ideal house pets. They can be destructive, and usually, they keep the wild nature of the serval.There are many more examples of human-made hybrid animals. Some hybrids, such as the mule, have been helpful to humans. Unfortunately, others, like the wolfdog or Savannah cat, should not have been made in the first place.According to the text, why are bear hybrids being seen in the wild?Grolar bears and pizzlies could pose a risk to natural habitats and humans.These hybrids were first seen in zoos, as the bears' natural habitats did not normally overlap.Grolar bears and pizzlies are the result of crossing polar bears and grizzly bears.Due to climate change, the bears' once-separate habitats are beginning to overlap. Help me with this please. The graph below shows the averaged sunspots from 1610 to 2007. The graph shows sunspot number on the y axis and years 1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950, and 2000 on the x axis. The graph rises and falls in a cyclic order in gaps of approximately 10 years. The number of sunspots observed in 1610 was 40, in 1650 it was 5, in 1700 it was 10, in 1750 it was 90 and the number of sunspots in 1800 was 50. The number of sunspots observed in 1850 was 130 and the number of sunspots in 1900 was 10. The number of sunspots observed in 1950 was 150 and the number of sunspots observed in 2000 was 30. Based on the graph, which of these conclusions is correct? Some of the previously warm regions became colder from 1650 to 1700. Some of the previously cold regions became warmer from 1600 to 1700. Some of the previously warm regions became warmer from 1610 to 1700. Some of the previously cold regions became colder from 1900 to 1950. 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