Physics Middle School

Calculate the potential energy stored in an object of mass 50 kg at a height of 20 m from the ground.
(g=10 m/s2)

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Answers

Answer 1

Answer:

potential energy=mgh

=50×10×20

=10000 J

Answer 2

Answer:

[tex]\huge\boxed{\sf P.E. = 10 kJ}[/tex]

Explanation:

Given Data:

Mass = m = 50 kg

Height = h = 20 m

Acceleration due to gravity = g = 10 m/s²

Required:

Potential Energy = P.E. = ?

Formula:

P.E. = mgh

Solution:

P.E. = (50)(20)(10)

P.E. = 10,000 Joules

P.E. = 10 * 10³ Joules (10³ = Kilo)

P.E. = 10 kJ

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

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help pls!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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It’s the second one

On the document, the answer to the equation and problem would be the second answer( can evaporate easily) your welcome :)

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Answer:

It comes from the word "moon" and it is because it takes a full moon cycle around the earth to complete a month, around 30 days

It comes from the word moon

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Answer:

The answer is 1

Explanation:

good luck

The answer is the first one

PLEASED HELP ME AND ALSO NO LINKS OR FILES PLEASED AND THANKS

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Answer:why is there no grade

Explanation:

What grade is this?

What causes you to miss an object you reach for when looking at it at an angle through two media?

A. The eyes get confusing signals because they are interpreting information from two different places.

B. The brain gets confusing signals because it is used to interpreting light that moves through air.

C. The hands get confusing signals from the eyes because of the change in medium.

Answers

Answer: A. The eyes get confusing signals because they are interpreting information from two different places.

Step-By-Step Explanation: I know this is right because it has happened to me, and others multiple times.

Question:

What causes you to miss an object you reach for when looking at it at an angle through two media?

A. The eyes get confusing signals because they are interpreting information from two different places.

B. The brain gets confusing signals because it is used to interpreting light that moves through air.

C. The hands get confusing signals from the eyes because of the change in medium.

The answer to your question is A

please help no trolls no links
How does the mass of a wheelchair influence the force needed to move it?

Answers

Answer:

When mass is greater, the force needed must be greater keeping the acceleration of the wheel chair constant

Explanation:

[tex]force = mass \times acceleration \\ f \: \alpha \: m[/tex]

force is directly proportional to the mass

The force needs greater keeping of the wheel chair

please help me to fix this sentence to sentence with more delivery and fluency

Which amount of water is more between the amount of water that evaporates in a day or the amount of water that comes down as rain in a day?

Answers

Answer:

Is the amount of water evaporated in a day more significant than the amount of rain falling in a day?

Explanation:

Don't overcomplicate it

Which amount of water is between how much water evaporates, and how much comes down during rainfall in the same day

how are all of the nonmetal elements on the periodic table related in terms of ability to lose electrons?

Answers

Nonmetal elements have relatively low boiling points, are poor conductors of heat and electricity, and don't like to lose electrons. ... Metals and nonmetals react to form ionic compounds. In these reactions, nonmetals steal electrons from metals.

Orrrrrrrrrr...

Nonmetal elements have relatively low boiling points, are poor conductors of warmth and electricity, and do not wish to lose electrons. ... Metals and nonmetals react to make ionic compounds. In these reactions, nonmetals steal electrons from metals.

Answer:

Explanation:

help plssssssssssssssssssss

Answers

Answer:

"humans cannot hear all the same sound frequencies as animals", & "Humans cannot make make all the same sound frequencies as animals" are correct. the other two are incorrect, hope this helps!

Yes, that is most like the answer but I’m not to sure

i need help i dont have a caculator that need to use for it sadly

Answers

Answer:

A) y = 1.3x + 10

Explanation:

2 Points on the graph by using x and y values:

(0, 10) and (10, 23)

Slope:

m= (y2-y1)/(x2-x1)

m= (23 - 10)/(10 - 0)

m= 13/10

m = 1.3

Slope-intercept:

y - y1 = m(x - x1)

y - 10 = 1.3(x - 0)

y - 10 = 1.3x

y = 1.3x + 10

I NEED THIS A SOON AS POSSIBLE
Which spring has more potential energy stored?
a) 1.0 N/m constant spring stretched 0.2 m.

b) 2.0 N/m constant spring stretched 0.2 m.

c) 1.0 N/m constant spring stretched 0.3 m.

d) 2.0 N/m constant spring stretched 0.3 m.

Answers

Work is done when spring is extended or compressed. Elastic potential energy is stored in the spring. Provided inelastic deformation has not happened, the work done is equal to the elastic potential energy stored.

Answer: c) 1.0 N/m constant spring stretched 0.3 m.

Explanation:

HELP ASP PLEASED AND THANKS NO LINKS PLEASED AND NO FILES

Venn Diagram Alternative

Directions: Use the phrases in the word bank below to describe either analog signals, digital signals, or both. Write the phrase under the concept it represents.

Word Bank:

Transmitted as pulse

Used by landline telephones

Converted into binary code

More reliable

Used by computers

Continuous

Less Reliable

All electromagnetic waves

Intervals

Digital signals:

Analog Signals:

Both:

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Answer:

just search up a ven-diagram and then try to draw it or trace it then use it for ur question

Explanation:

someone help! (i will give u a thanks)

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Answer:

a drummer practicing his drum set

Explanation:

A drummer practicing his drum set

An astronomer writes down the following for an object in the night sky: azimuth 364˚ and altitude 93˚, what is wrong with the values?

Answers

I think 25 degrees . I am definitely going to be wrong probably though

If your azimuth is larger than 180 degrees, multiplying it by 180 degrees to find your rear azimuth will result in an azimuth that is greater than 360 degrees.

What azimuth 364˚, altitude 93˚, what is wrong with values?

A circle has 360 degrees, thus if your azimuth is higher than 180 degrees, multiplying it by 180 degrees to find your back azimuth will result in an azimuth higher than 360 degrees.

Because many ancient calendars had 360 days, it may be because the stars appeared to rotate around the north star at a rate of around 1 degree every day that azimuth is measured using a 0-360° interval. Azimuth is utilized outside of astronomy in disciplines like navigation and geology.

Therefore, Whereas an object at 90 degrees height is directly overhead, one at 0 degrees altitude is just above the horizon.

Learn more about altitude here:

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help i give brainilest
Which is the function of the exoskeleton in animals? (2 points)

a. Produces the sperm used in reproduction
b. Protects against different weather
Protects against their environment's (this answer is incorrect so don't choose it stoopid)
d. Works with muscles to allow movement

Answers

Answer:

Explanation:

The Exoskeleton allows animals to move alot more freely.

The answer is D my friend

Four beakers have water at 27 °C. A piece of metal is dropped into the water in each beaker. The table below shows the initial temperature of the four metals.

Metal Initial Temperature
A 30 °C
B 42 °C
C 25 °C
D 16 °C

I WILL GIVE BRAINLIEST AND 50 POINTS
Which metals will transfer heat to the water?
Metal A and Metal B
Metal B and Metal C
Metal C and Metal D
Metal B and Metal D

Answers

Answer:

Metal A and Metal B

Explanation:

because the temperature if the metals are higher than the temperature of the water

Answer:

A and B (Answer a)

Explanation:

helping the guy above get brainlist

PLEASE HELP ME ASAPPPPPP

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Answer:

i cants see it

Explanation:

Answer:

a drummer practicing a drum set

Explanation:

I NEED THIS A SOON AS POSSIBLE
NO LINKS(I'm doing this again bc someone sent a link in the other one)
Which spring has more potential energy stored?
a) 1.0 N/m constant spring stretched 0.2 m.

b) 2.0 N/m constant spring stretched 0.2 m.

c) 1.0 N/m constant spring stretched 0.3 m.

d) 2.0 N/m constant spring stretched 0.3 m.

Answers

Answer:

Im p sure the answer is A !

Explanation:

Listed in the Item Bank are some important labels for sections of the image below. To find out more information about labels, some have more details available when you click on them. Drag and drop each label to the corresponding area it identifies in the image.

Answers

1 - cytoplasm

2 - DNA

3 - rybosome

4 - cell membrane

5 - nucleus

please help me NO JOKING

Answers

Answer:

Full moon

Explanation:

At full moon the moon appears to be directly opposite the sun so as the sun sets, the moon rises

Answer:

Full Moon

Explanation:

When full moon appears its appears at the opposite side of the earth and also when the sun sets then only the moon rises

A photographer is in a green field of grass on a sunny day. She decides to use a red camera filter to take a picture. What color does the green grass appear to be in the picture? Explain.

Answers

Answer:

Based on color theory it would come out as brown

Explination:

Basic color theory states the primary colors are red yellow and blue. Expanding that to the rainbow you know. Red plus yellow equals orange. Yellow plus blue equals green. And blue plus red equals purple. Red and Green are opposite colors and when you combine opposite colors you get brown

The answer is none-black
Explanation: Because red filter only allows red light pass through and the green light will not be transmitted.

What improvements can be made by doing ladder drills on a regular basis? Increased Speed Increased Agility Increased Quickness All the above

Answers

Answer:

All of the above

Explanation:

Hope this helps

They improve three key fitness factors—speed, agility and quickness—in addition to strengthening your joints, ligaments and tendons. Incorporating agility ladder workouts into your fitness routine is also great for improving brain health

An object of mass 100kg is moving with a velocity of 5m/s. Calculate the kinetic energy of that object

Answers

Answer:

1250 J

Explanation:

KE = 1/2(100 kg)(5 m/s)^2

KE = 1250 J

Given m=100kg
V=5m|s
Required KE=?
Solution KE=1/2mv^2
=1/2 100kg(5m/s)^2
=50kg*25(m/s)^2
=1250J

Please help with question!

Answers

5 Apatite
6 Feldspar
7 Quartz
8 Topaz

Answer:

#6, orthoclase

Explanation:

Mohs' hardness scale indecates that orthoclase can scratch apatite but not Quarts.

i need help someone answer, thanks!

Answers

Answer:

The third one.

Explanation:

fhfztdgjkhhi

Answer:

3rd one

Explanation:

Because the drum vibrates in a way that produces compression waves. The other options provide other waves, or no waves at all.

A car is moving at 80km/h accelerates to pass a truck. Five seconds later the car is moving at 100km/h. What is the Acceleration of the car? Please show the equation, Ty.

Answers

Answer/Explanation:

Acceleration is the rate of change of the velocity of an object that is moving. This value is a result of all the forces that is acting on an object which is described by Newton's second law of motion. Calculation of such is straightforward, if we are given the final velocity, the initial velocity and the total time interval. We can just use the kinematic equations. Fortunately, we are given these values. So, we calculate as follows:

acceleration = v - v0 / t

acceleration = (80 mph - 50 mph) ( 1 h / 3600) / 5 s

acceleration = 1.67 x 10^-3 m / s^2

a = V2-V1 ÷ Δt
a = 27.78 m/s - 22.2 m/s ÷ 5 seconds
a = 1.116 m/s ²

*you needed to convert the km/h to m/s for proper evaluation, which is what i did*

Please Help! Brainliest For Correct Answers!

Answers

Answer:

Liquid: A

Plasma: D

Solid: B

Gas: C

Liquid- D
Plasma- A
Solid- B
Gas- C

Which most likely has the greatest conductivity? a warm plastic rod a cool rubber tube a cool silver strip a warm copper wire

Answers

Answer:

Copper

Explanation:

Plastic and Rubber are both bad conductors of electricity so it cant be those

Copper is a good conducter of electricity since it warms up it allows electrons to move easily faster than silver.

A cool silver strip most likely has the greatest conductivity.

What is meant by conductivity ?

The ability of a material to transmit heat or an electric charge through it is measured by its conductivity.

Here,

A conductor is a substance that offers extremely little resistance to the transmission of thermal or electrical energy.

Metals, semiconductors, and insulators are the three main categories of materials. The least conductive materials are called insulators which include ceramic, wood, and plastic, while metals are the most conductive materials.

Of all metals, silver has the highest electrical conductivity. In actuality, silver is the benchmark metal against which all other metals are measured for conductivity.

On a scale of 0 to 100, silver scores a perfect 100, followed by copper at 97 and gold at 76.

Hence,

A cool silver strip most likely has the greatest conductivity.

To learn more about conductivity, click:

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What is the function of the pistil and stamen of a plant? (2 points)

a
To allow the plant to reproduce.

b
They provide support for the plant.

c
They protect the plant from the weather.

d
The protect the plant from predators.

Answers

Answer: A. To allow the plant to reproduce

Explanation: Stamen is the male reproductive organ of the flower, which produces pollen grains while pistil is the female reproductive organ, which produces ovules. The two parts of the stamen are anther and filament while the three parts of the pistil are stigma, style, and ovary.

Answer is: a

Example is

please help no trolls no links pls
How does changing the mass of a wheelchair affect its velocity?

Answers

It would move slower/ faster by changing the mass, which would effect the weight and speed.

if it’s mass is heavier it will need more force to travel, making its velocity slower

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Calculate the potential energy stored in an object of mass 50 kg at a height of 20 m from the ground. (g=10 m/s2) PLEASEEE FASTTTTT PLEASEEE

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Calculate the potential energy stored in an object of mass 50 kg at a height of 20 m from the ground.
(g=10 m/s2)

PLEASEEE FASTTTTT PLEASEEE