A crane lifts a 75kg mass a height of 8 m. Calculate the gravitational potential energy gained by the mass (g = 9.8 N/kg.

Answers

Answer 1
U=mgh
U= 75 x 9.8 x 8
U= 5880 j

Related Questions

what do electrons move from

Answers

Answer:

Negatively charged, to positively charged parts

Explanation:

Electrons are negative, negative is attracted to positive.

Which object might have the pattern of magnetic domains shown in the
image?
114 114
114 114
11 11
A. Cotton fabric near a magnet
O B. A piece of iron, not near a magnet
O C. A piece of iron near a magnet
D. Cotton fabric, not near a magnet

Answers

Answer: a piece of iron near a magnet

Explanation:

3. When a person is outside of the system and they add energy to the
system, we show this energy as

Answers

Answer:

We show added energy to a system as +Q or -W

Explanation:

The first law of thermodynamics states that, in an isolated system, energy can neither be created nor be destroyed;

Energy is added to the internal energy of a system as either work energy or heat energy as follows;

ΔU = Q - W

Therefore, when energy is added as heat energy to a system, we show the energy as positive Q (+Q), when energy is added to the system in the form of work, we show the energy as minus W (-W).

Define potential energy. Give its mathematical formula and SI unit.

Answers

Answer:

The type of mechanical energy that is possessed due to the virtue of motion or state of a body is known as potential energy.

Its formula: PE= mgh

Its SI unit is joule.

Hope it helps you..

A car speeds up from 0.00 m/s to 60.0
m/s in 8.53 s.
The acceleration of the car is:
A. 512 m/s2
B. 8.53 m/s2
C. 68.5 m/s2
D. 7.03 m/s2

Answers

D. 7.03 m/s^2

Acceleration is equal to the change in velocity divided by the elapsed time:

a = 60.0/8.53 = 7.0339

What is the difference between distance and position?

Answers

Explanation:

HERE you go. hope this helps.

Place the location of a watermelon in order from most to least potential energy.

aboard a flying airplane

2
on a roof

3
above a refrigerator

4
on the ground

5
on top of a table

Answers

it would be on the ground

Compare and contrast an earthquake and a tsunami.

Answers

Answer:

An earthquake is a trembling movement of the earth's crust. These tremors are generally caused by shifts of the plates that make up the earth's surface. ... A tsunami (pronounced soo-NAHM-ee) is a series of huge waves that occur as the result of a violent underwater disturbance, such as an earthquake or volcanic eruption.

Explanation:

pls help me i’m begging u

Answers

Answer:

C

Explanation:

Balanced forces cancel each other out so they do not change the object's motion

a supersonic aircraft travels faster than the speed of sound. What might be the top speed of such an aircraft? 200 Kilometers per hour 500 Kilometers per hour O 1000 Kilometers per hour O 1500 Kilometers per hour​

Answers

‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎1500 kpm

What is the Range of the projectile motion?

Answers

Answer:

Range of projectile, R

For projection above ground surface, the range of the angle of projection with respect to horizontal direction, θ, is 0° ≤ θ ≤ 90° and the corresponding range of 2θ is 0° ≤ 2θ ≤ 180°.S

hope you're looking for this.

The range of a projectile is how far it travels in the horizontal direction. If you know the horizontal speed you then multiply by the time in flight and you have the range. I hope this helps :)


1. What are valence electrons used for by an element?

Answers

Answer:

An element's valence electron tells us about its ability to react and not react. More rules to this, but that's the gist of it. it also helps us form bonds

Explanation:

Valence electrons are used by an element for bonding and ionization, contributing to the element's chemical reactivity and behavior.

Valence electrons also play a vital role in ionization, which refers to the process of gaining or losing electrons to form ions. Elements tend to gain or lose electrons in order to achieve a stable electron configuration, typically by acquiring a full valence shell.

Metals, located on the left side of the periodic table, have fewer valence electrons, often one or two, and tend to lose them to form positive ions (cations). This characteristic makes them good conductors of electricity.

Nonmetals, located on the right side of the periodic table, have a nearly full valence shell and tend to gain electrons to achieve a stable configuration, forming negative ions (anions). Nonmetals generally do not conduct electricity as well as metals.

In summary, valence electrons are used by an element for bonding, where they participate in the formation of covalent and ionic bonds, and for ionization, where they are gained or lost to form ions and achieve a stable electron configuration.

To know more about electrons here

https://brainly.com/question/12001116

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When a toy car is moving across a flat surface, what forces are acting on it (gravity, tension, spring, friction,air,normal,applied)?

Answers

Answer:

I believe gravity is acting on it

Under what circumstances will the distance traveled by an object be the same as the magnitude of the displacement of an object?​

Answers

Hi Randa, want me to help you with physics? The answer is when the object moves in a straight line.

A 56 kg diver runs and dives from the edge of a cliff into the water which is located 4.0 m below. If she is moving at 8.0 m/s the instant she leaves the cliff, determine the following.
Her gravitational potential energy relative to the water surface when she leaves the cliff
Her kinetic energy when she leaves the cliff
Her total mechanical energy relative to the water surface when she leaves the cliff
Her total mechanical energy relative to the water surface just before she enters the water.
The speed at which she enters the water.

Answers

Answer:

1) 2197.44 J

2) 0 J

3) 2197.44 J = Constant

4) 2197.44 J

5) Approximately 8.86 m/s

Explanation:

The given parameters are;

The mass of the diver, m = 56 kg

The height of the cliff, h = 4.0 m

The speed with which the diver is moving, vₓ = 8.0 m/s

The gravitational potential energy = Mass, m × Height of the cliff, h × Acceleration due to gravity, g

1) Her gravitational potential energy = 56 × 4.0 × 9.81 = 2197.44 J

2) The kinetic energy = 1/2·m·u²

Where;

u = Her initial velocity = 0 when she just leaves the cliff

Therefore;

Her kinetic energy when she just leaves the cliff = 1/2 × 56 × 0² = 0 J

3) The total mechanical energy = Kinetic energy + Potential energy

The total mechanical energy is constant

Her total mechanical energy relative to the water surface when she leaves the cliff = Her gravitational potential energy = 2197.44 J = Constant

4) Her total mechanical energy relative to the water surface just before she enters the water = 2197.44 J

5) The speed with which she enters the water, v, is given from, v² = u² + 2·g·h

Where;

u = The initial velocity at the top of the cliff before she jumps= 0 m/s

∴ v² = 0² + 2 × 9.81 × 4 = 78.48

v = √78.48 ≈ 8.86 m/s

The speed with which she enters the water, v ≈ 8.86 m/s

1) Her gravitational potential energy relative to the water surface when she leaves the cliff is; GPE(leaves cliff) = 2195.2 J

2) Her kinetic energy when she leaves the cliff is; KE = 0J

3) Her total mechanical energy relative to the water surface when she leaves the cliff is; ME_total = 2195.2 J

4) Her total mechanical energy relative to the water surface just before she enters the water is; ME_total = 2195.2 J

5) The speed at which she enters the water is; v = 8.85 m/s

We are given;

Mass of the diver; m = 56 kg

Height of the cliff; h = 4 m

Speed at which she is moving; vₓ = 8 m/s

1) Formula for gravitational potential energy is;

GPE = mgh

where;

m is mass

g is acceleration due to gravity

h is height

Thus;

GPE = 56 × 4 × 9.8

GPE(leaves cliff) = 2195.2 J

2) The formula for kinetic energy when she leaves the cliff is;

KE = ¹/₂mu²

Where;

m is mass

u = initial velocity = 0 m/s

Thus;

KE = ¹/₂ × 56 × 0²

KE(leaves cliff) = 0 J

3) The total mechanical energy relative to the water surface when she leaves the cliffis;

ME_total = GPE(leaves cliff) + KE(leaves cliff)

Thus;

ME_total = 2195.2 + 0

ME_total = 2195.2 J  

4) Her total mechanical energy relative to the water surface just before she enters the water is same as that when she leaves the cliff = 2195.2 J

5) The speed with which she enters the water, v, is gotten from newtons third equation of motion;

v² = u² + 2gh

Thus;

v² = 0² + (2 × 9.8 × 4)

v² = 78.4

v = √78.4

v = 8.85 m/s

Read more at; https://brainly.com/question/25708521

What is Latin word for "little lumps?"

Answers

Answer:

tura paulo

Explanation:

sry if im wrong ;)

change the following to celisus
a.-400f b.800f
please its urgent i will give u brainliest

Answers

-400f = -240c, 800f = 426 2/3 C

Physics help, please? :)
3. Consider a locomotive and the rest of a freight train to be a single object. Suppose the locomotive is pulling the train up a hill. Describe the action and reaction forces that cause the locomotive to move up the hill, such as the reaction force and gravity.
4. Is the force of the earth’s gravity on the sun stronger, weaker, or the same as the force of the sun’s gravity on the earth? Explain why the sun’s attraction affects the motion of the earth more than the earth’s attraction affects the sun’s motion. Employ Newton’s second and third laws in your answer.
If anyone could help me at all, with either question it would be greatly appreciated, Physics is my hardest subject, and I struggle with it.

Answers

Answer:

Explanation:

3. Newton’s third law explains how every action has an equal but opposite reaction, meaning that forces comes in pairs. While the locomotive’s wheels are pushing back against the ground as the action force, the ground is producing a reaction force towards the locomotive, propelling it forward. Another pair of forces that act on the locomotive is gravity and normal force. While gravity is pulling the locomotive towards the ground, the normal force the ground exerts on the locomotive is why the locomotive doesn’t fall through the ground.

4. The force of Earth’s gravity on the Sun is weaker than the force of the Sun’s gravity on Earth. The Sun’s attraction  affects the motion of Earth more than the Earth’s attraction affects the Sun’s motion because according to  Newton’s second law, force has mass as one of its factors. The Sun has a significantly higher mass than Earth,  meaning that its force of gravity would also be significantly higher. Newton’s third law is why the Earth doesn’t get  marginally closer to the Sun, stating that every action has an equal and opposite reaction. As the Sun is pulling  Earth towards itself, Earth is pulling away from the Sun.

please help!!! I will mark brainly.
A parachute on a drag-race car opens and changes the velocity of the car from 75 meters per second to 25 meters per second in just 5 seconds. Calculate the acceleration of the car.

Answers

Explanation:

v = u + at

25 = 75 + a * 5

25 = 75 + 5 a

a = 25 - 75/5

a = -50/5

a = -10m/sec^2

please mark me as a brainelist


A metal ball has a mass of 2.05 kg and a volume of 6.8 cm. What is its density? Remember

Answers

Answer:

the density is 0.301 :)

Which of the following is not an example of work?
1.a man pushing a heavy box across the floor
2.an air hockey puck traveling at a constant speed
3.a magnet repelling a 4.compass needle
ship movement that causes ripples in the water

Answers

Answer:

3 a is the ans i think so ....

Why are black holes so deeply part of the collective imagination (books, movies, songs, video games, comics, paintings, etc)?

Answers

Answer:

Black holes are some of the strangest and most fascinating objects in outer space. They're extremely dense, with such strong gravitational attraction that even light cannot escape their grasp if it comes near enough. so when in books, movies, songs, video games, comics, paintings, etc you can imagine the impossible. as in escaping a black hole

Explanation:

Which of the following is the best way to decrease an objects acceleration?

Increase mass

Reduce friction

Decrease mass

Increase force​

Answers

increase mass

hope it helps

Answer:

its D

Explanation:

i took the assignment, its D

unit of power is derived unit why​

Answers

Answer:

it was given the name Newton (N). from this, the derived unit of energy (or work) is defined ,as the work produced when the unit of force causes a displacement equal to the unit of length of its point of application along its direction . It was given the name Joule (J).

Explanation:

A student wishes to conduct an investigation on heat transfer that demonstrates convection, Which
method should the student use?

A.
Pour hot, colored water into a bowl of cooler water that is another color,
B.
Melt chocolate bars in a microwave at different settings,
C.
Leave a glass of ice water outside in the direct sunshine.
D.
Place a spoon that is room temperature on top of a hot burner on a stove,

Answers

It’s D your answer is D because

How does Health & Physical Education relate to any other subject you now study in
school?

Answers

Answer:

Health relates to science because

in science you study, research, and knowledge in this case, health science, which helps you under stand more about how humans and animals function. And Physical education relates to science because , you study the way of human movement, think of push-ups as a example.

I hope I helped U ´꓃ ` U


A block of cheese Bhangs from the ceiling by rope 1 A wheel of cheese Whangs from the block of
cheese by rope 2
What is the correct free body diagram for the block of cheese B?
URGENT

Answers

Answer:

Explanation:

KHAN ACADEMY

The correct free body diagram is option (B). There will only be two forces acting on cheese B.

Given that Cheese B hangs on rope 1. The weight of the cheese is balanced by the tension force on the rope. That is, the cheese experiences a force in the upward direction due to the tension on rope 1.Similarly, a wheel of cheese W hangs from block B by a rope 2. This rope has a tensional force that is balanced by the weight of the cheese W. This causes a downward pull on block B due to the tension on rope 2.

By representing the tensional forces by the ropes 1 and 2 as [tex]F_{T1}[/tex] and [tex]F_{T2}[/tex] respectively, the correct free body diagram will be option B.

Learn more about free body diagrams here:

https://brainly.in/question/12953409

What does it mean for objects to be at different temperatures?

Answers

The temperature of an object is dependant on its heat capacity and the rate at which heat can be removed from its surface. Heat conduction depends on the structure and capability of the atoms to move within the material and pass on their energy to other atoms. Some materials are better conductors then others that is why two objects can be in the same room but feel two different temperatures. It is also true if two object are at different temperatures and are in contact with one another they will reach the same temperature.

this is also for a Digital Electronics class​

Answers

Answer:

Rt = 908.25 [ohm]

Explanation:

In order to solve this problem, we must remember that the resistors connected in series are added up arithmetically.

In this case, R2 and R3 are in series therefore.

R₂₃ = 200 + 470

R₂₃ = 670 [ohm]

Now this new resistor (R₂₃) is connected in parallel with the resistor R4. therefore we must use the following arithmetic expression, to add resistances in parallel.

[tex]\frac{1}{R_{4-23} }= \frac{1}{R_{4}}+\frac{1}{R_{23} } \\\frac{1}{R_{4-23} }=\frac{1}{1800}+\frac{1}{670} \\R_{4-23}=488.25[ohm][/tex]

In this way R₁, R₅ and R₄₋₂₃ are connected in series.

Rt = R₁ + R₅ + R₄₋₂₃

Rt = 150 + 270 + 488.25

Rt = 908.25 [ohm]

Attachment Lab:Conservation of Linear Momentum

Answers

Answer:

This is what I got the teacher hasn’t graded it yet so sorry if it’s not right

Explanation:

Other Questions
PLEASE HELP This is solving Exponential and Logarithmic Equations I got the other ones, but I dont even know what this says to be honest please help. The map shows where the Bering land bridge once existed. A map titled Area of the Bering Land Bridge. A key shows Land with present-day coastlines in dark green and Land exposed during the last ice age due to lower sea levels in green. Green surrounds the coast of Northeast Russia and Alaska, USA and an area between those two areas. Which statement does the map support? Humans from North America crossed the Bering land bridge to follow animal herds. The Bering land bridge connected the Arctic Ocean and the Pacific Ocean. The Bering land bridge was hundreds of miles wide at its narrowest spot. North America was cut off from Asia when rising sea levels covered the Bering land bridge. The price of a smart watch is $109.99 and the sales tax is 6.5%. What is the total cost of the smart watch? Enter your answer in the box. On December 31, 2017, Extreme Fitness has adjusted balances of $800,000 in Accounts Receivable and $55,000 in Allowance for Doubtful Accounts. On January 2, 2018, the company learns that certain customer accounts are not collectible, so management authorizes a write-off of these accounts totaling $10,000. What amount would the company report as its net accounts receivable on December 31, 2017 Help my friend just texted saying "it's way to fing early" what do I say back?????? Use the distributive property to remove the parentheses.9(6-v) Describe the end behavior of a 9th degree polynomial with a negative leading coefficient?? What is the common property of the elements pinctogen What single decimal multiplier would you use to decrease by 7% followed by a 20% decrease? Why was the crisis so devastating for Latin America and European colonies in Africa and Asia? all of these bodies of water are associated with the continent of africa except one. which of these is not found in Africa?A. Nile river B. Atlantic oceanC. Huang he riverD. Mediterranean river Please answer correctly and quickly*Thank You* A 4.80 g bullet moves with a speed of 170 m/s perpendicular to the Earth's magnetic field of 5.00105T.Part AIf the bullet possesses a net charge of 1.06108 C , by what distance will it be deflected from its path due to the Earth's magnetic field after it has traveled 1.00 km ? anybody understand this ? please help me . How did the telescope contribute to Galileo's theories? * 1 point Church elders could see the motion in the universe for themselves and support Galileo. Through the telescope, Galileo could see how bodies in the universe moved and what they were made of. Galileo invented the telescope and earned money to carry out his work selling them. The telescope made automatic measurements of the movements in the universe. There are 60 students in a classroom, 50% of the students areboys. 30% of the boys and 60% of the girls want to buy thenew textbook. How many students want to buy the newtextbooks?___ students Find the area of the shape shown below (Please read the question carefully) Answer is not BRogelio sold a 1/3-page ad to client A, a 3/4-page ad to client B, and a 1/8-page ad to client C. Rogelio says he sold about 1 1/2 pages of ads. Is he right? (EXPLAIN.) translation is the process by which mrna is translated into a sequence of amino acids Answer ASAP Brainliest and 22 Points! The metric unit of power is _____.