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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5 Apatite
6 Feldspar
7 Quartz
8 Topaz

Answer:

#6, orthoclase

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

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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.

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

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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

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Answer:

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Explanation:

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Answer:

A and B (Answer a)

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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.

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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:

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It’s the second one

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Answers

Answer:

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Explanation:

Hope this helps

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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

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b. Protects against different weather
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Answer:

Explanation:

The Exoskeleton allows animals to move alot more freely.

The answer is D my friend

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

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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.

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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.

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Explanation:

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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.

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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.

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

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Question:

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

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

(0, 10) and (10, 23)

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

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

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m = 1.3

Slope-intercept:

y - y1 = m(x - x1)

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y = 1.3x + 10

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Answer:

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

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

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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.

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Im p sure the answer is A !

Explanation:

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Liquid: A

Plasma: D

Solid: B

Gas: C

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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

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A cool silver strip most likely has the greatest conductivity.

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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.

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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.

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1 - cytoplasm

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a
To allow the plant to reproduce.

b
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d
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Answer: A. To allow the plant to reproduce

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Answer is: a

Example is

HELP ASP PLEASED AND THANKS NO LINKS PLEASED AND NO FILES

Venn Diagram Alternative

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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:

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.

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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:

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

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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