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If you have chance to rearrange the periodical table, what is the style of it?
if i had chance to rearrange thw periodical table i would arrange like this because it's not fair to change it it's a fact
With this pandemic, have you gained a new appreciation for your education
Answer
YESSS. my education went down hill since the pandemic :(
Explanation:
Why are images reflected from a rough surface not as clear as those reflected from a smooth
surface?
Answer:
Just as images are reflected from the surface of a mirror, light reflected from a smooth water surface also produced a clear image. ... Consequently, the outgoing rays are reflected at many different angles and the image is disrupted. Reflection from such a rough surface is called diffuse reflection and appears matte.
Explanation:
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A 3500 N is force is applied to a spring that has a spring of constant of k= 14000 N/m. How far from equilibrium will the spring be displaced?
Answer:
the spring be displaced by 25.0 cm
Explanation:
The computation is shown below:
As we know that
F= -K × x
So,
[tex]x = \frac{-F}{K}[/tex]
Now
[tex]x = \frac{-3500}{14000} \\\\[/tex]
= -0.250m
= 25.0 cm
Hence, the spring be displaced by 25.0 cm
Your student desk has been in the room for many hours, it is at thermal equilibrium with the room?
Which part of your desk is colder: the wood or the metal? Why?
Answer:
metal because A: In general, metals feel colder or hotter to the touch than other materials at the same temperature because they're good thermal conductors. This means they easily transfer heat to colder objects or absorb heat from warmer objects. Thermal insulators like plastic and wood don't transfer heat as easily.
Explanation:
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Answer the following question:
Which process is an example of a physical change?
a. carrots are cut into small pieces and mixed into a salad
b. a peanut butter sandwich is eaten and broken down by enzymes in the stomach
c. sodium metal and chlorine gas are combined to form a sodium chloride, or table salt
d. sodium metal and water are combined to form a basic compound and a flammable gas
Warm air rises because it has less ___________.
Answer:
because it is less dense than the surrounding air
Explanation:
Some students found this information about an energy saving lamp and a filament lamp that give out almost the same amount of light.
Describe the advantages and disadvantages of each type of lamp.
Answer:
By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save $75 each year.
Compared to traditional incandescents, energy-efficient lightbulbs such as halogen incandescents, compact fluorescent lamps (CFLs), and light emitting diodes (LEDs) have the following advantages:
Typically use about 25%-80% less energy than traditional incandescents, saving you money
Can last 3-25 times longer.
Mickey had three substances. He hit each of them with a hammer. A red
substance was malleable and easily flattened. A white crystal cracked but did
not break. A silver substance flattened but did not crack. Which two
statements could be true?
A. The silver substance is a metal,
B. The red substance is ionic,
C. The silver substance is ionic.
I D. The white substance is ionic.
Answer:
A & D
Explanation:
Took the test already
The two statements that could be true on the basis of the information given in the question are as follows:
The silver substance is metal.The white substance is ionic.Thus, the correct options are A and D.
What are the properties of metal?The properties of the metal are described as follows:
They are good conductors of heat and electricity.They possess high melting points and high density. They are malleable, ductile, and lustrous in nature. They are generally hard as compared to other elements.The silver substance is metal because it is flattened into thin sheets but did not crack. This shows the property of malleability of metals. The white substance is ionic because it is cracked but did not break. It shows that ionic compounds are tough to break.
A red substance is also metal but does not express in any options.
Therefore, the correct options for this question are A and D.
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The first mineral to melt from a rock is
Answer:
Quartz
Explanation:
Answer:
Quartz
Explanation:
The temperature must be high enough to melt at least some minerals in the rock. The first mineral to melt from a rock will be quartz
testing related to criteria
Answer: Test criteria offers assistance the analyzer(s) to compose the test prepare. They ought to be chosen in understanding with the accessible test exertion. Test scope measures are characterized as a proportion between the test cases required for fulfilling the criteria and those of these which have been executed
Answer 7575
Explanation: the numbers are cool
How long will it take for a basketball spinning on someone’s finger to stop if it undergoes and angular acceleration of -0.15 rad/s and is traveling at 27 rad/s initially? How many revolutions will it make?
The basketball's angular velocity ω at time t is
ω = 27 rad/s + (-0.15 rad/s²) t
It comes to a stop when ω = 0, which happens for
0 = 27 rad/s - (0.15 rad/s²) t
t = (27 rad/s) / (0.15 rad/s²)
t = 180 s
In this time, the ball would undergoes an angular displacement θ of
θ = (27 rad/s) t + 1/2 (-0.15 rad/s²) t ²
Plug in t = 180 s and solve for θ :
θ = (27 rad/s) (180 s) - 1/2 (0.15 rad/s²) (180 s)² = 2430 rad
One complete revolution corresponds to a turn of 2π rad, so the ball makes
(2430 rad) / (2π rad/rev) ≈ 386.747 rev
or about 387 revolutions as it slows down.
9. True or false. Training at high altitudes can also increase the amount of
oxygen that can be carried by the circulatory system. *
What materials changed due to the light from the light bulb?(Multiple Choice)
A. Plant
B. Solar Panels
C. Glass
D. Melanin
E. Foil
F. Genetic Material
How do you get on the cheer squad?!
Answer:
you don't cuz cheerleaders only get in the way of the football game
How much work is required to raise a 0.75 kg flag from shoulder height (1.2m) To the top of the flag pole (4 m)?
Answer:
20.58J
Explanation:
[tex]W=\Delta E[/tex]
[tex]\Delta E= \Delta U_{g}[/tex]
[tex]\Delta U_{g}=mgh[/tex]
[tex]mgh=(.75kg)(9.8m/s^2)(2.8m)=20.58J[/tex]
From an apple tree 2 metres high, a 100g mass apple fell of the tree, what work did it do?
Answer:
When an apple falls from the tree to the ground, its energy of position (stored as gravitational potential energy) is converted to kinetic energy, the energy of motion, as it falls. When the apple hits the ground, kinetic energy is transformed into heat energy.
Which equation determines the acceleration of an object moving in a straight line?
You must calculate the change in speed per unit of time.
Group of answer choices
Acceleration = ( initial speed - final speed ) / time
Acceleration = time / ( initial speed - final speed)
Acceleration = time / ( final speed - initial speed)
Acceleration = ( final speed - initial speed ) / time
Answer:
Option D
Last option
GOOD LUCK FOR THE FUTURE! :)
Explain What is electrical energy and why do we need this energy
Answer:
WHAT IS ELECTRICAL ENERGY?Electrical energy is the most convenient form of energy for most human uses. Electrical energy is easy use and move from one location to another, but it is almost impossible to store in any large quantity. It can be used for running computers and most appliances, home heating, and even transportation.ELECTRICITY is used by industry, households, and businesses—accounting for 18% of end use energy worldwide.Electrical energy is very convenient, and as a result more and more of the energy used by a high energy society is in the form of electricity, see figure 1. The rate of electrical energy use is growing faster than the rate of electricity use, see figure 2.WHY DO WE NEED ELECTRICAL ENERGY?Electrical energy is used throughout the world to power devices, appliances and methods of transportation utilized in daily life. To make things operate, electrical energy must be emitted from energy sources such as power plants, to enable an object to consume the power it needs to function.PLEASE HELP I HAVE FINALSSS
Answer: 26.67 m/s
Explanation:
Given
Length traveled by the ball [tex]s=40\ m[/tex]
Time taken to reach the goal post is [tex]t=3\ s[/tex]
Initial velocity [tex]u=0\ m/s[/tex]
Using the second equation of motion
[tex]\Rightarrow s=ut+\frac{1}{2}at^2\\\Rightarrow 40=0+\frac{1}{2}a(3)^2\\\Rightarrow a=\frac{80}{9}\ m/s^2\\[/tex]
Now using
[tex]\Rightarrow v^2-u^2=2as\\\\\Rightarrow v^2-0=2\times \frac{80}{9}\times 40\\\\\Rightarrow v=\sqrt{\dfrac{80\times 80}{9}}=\dfrac{80}{3}\\\Rightarrow v=26.67\ m/s[/tex]
The velocity of ball will be 26.67 m/s
the court that has the executive power on review cases from regional trial courts
Answer:
courts of appeals
Explanation:
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i need help in (a) and (c)
please at least try
I don't know please mark as brilliant
After reading a book, Julio looks out of the window and sees clouds in the distance. Which change allows Julio to clearly see the clouds after looking at his book? His corneas become flatter. His lenses change shape. His optic nerves begin sending signals. His vitreous humor becomes denser.
Answer:
Lens change
Explanation:
by changing the shape of the lens the rays from the clouds will be able to refract correctly in the lens then create the correct upside-down image on the retina.
Hope it helped
PLS mark BRAINLIEST
Answer:
His lenses change shape.
Explanation:
just took the quiz
what type of particle carries an electric current through a wire
Someone who strength trains twice a week can reduce their muscle loss percentage from % to % every decade.
Shrill sound is of -------------- *
Higher frequency
Lower frequency
Higher amplitude
Lower amplitude
Answer:
Higher frequency.
Explanation:
Sound are mechanical waves that are highly dependent on matter for their propagation and transmission.
Sound travels faster through solids than it does through either liquids or gases. A student could verify this statement by measuring the time required for sound to travel a set distance through a solid, a liquid, and a gas.
Mathematically, the speed of a sound is given by the formula:
[tex] Speed = wavelength * frequency [/tex]
Generally, the frequency of a sound wave determines the pitch of the sound that would be heard.
A shrill sound refers to a type of sound that is typically sharp, high pitched and as such has higher frequency.
Hence, shrill sound is of higher frequency.
I need help on this question !
Answer:
A. Create habitats for coral, but not fish
KE=0.5.m.v2 or PE=m.g.h
kinetic and potential energy practice problems solve and show your work
1. When a golf ball is hit, it travels at 41 meters per second. The mass of a golf ball is 0.045 kg. What is the kinetic energy of the golf ball?
2. the newly developed F-22 Raptor jet fighter weighs approximately 100,000kg and can travel up to 600 meters per second what is the kinetic energy of the F-22 jet fighter at this speed
3. if the jet fighter in #2 is traveling at a height of 10,000 meters, what would the potential energy be
(1) The kinetic energy of the golf ball is 37.82 Joules,
(2) The kinetic energy of the F-22 jet fighter is 1.8 × 10¹⁰ Joules.
(3) The potential energy of the F-22 jet fighter is 9.8 × 10⁹ Joules .
What is kinetic energy?Kinetic energy is a type of power that a moving object or particle possesses. When an object undergoes work, which involves the transfer of energy, by exerting a net force, the object accelerates and consequently obtains kinetic energy.
Given:
The velocity of the ball, v = 41 m / s,
The mass of the golf ball, m = 0.045 kg,
(1) Calculate the kinetic energy as shown below,
KE = 1 / 2 × 0.045 × 41²
KE = 37.82 Joules
(2) Calculate the kinetic energy of the F-22 jet fighter as shown below,
KE = 1 / 2 × 600² × 100000
KE = 1.8 × 10¹⁰ Joules
(3) Calculate the potential energy of the jet as shown below,
PE = 100000 × 9.8 × 10000
PE = 9.8 × 10⁹ Joules
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Think of one obstacle that you know YOU CAN, YOU WILL, & YOU MUST overcome.
Answer:
myself tbh
Explanation:
hope this helps
Answer: Depression and myself, love life
Hope this helps have a awesome day❤️✨Explanation:
A 0.144 kg baseball approaches a batter with a speed of . The batter lines the ball directly back to the pitcher with a speed of . Find the impulse exerted on the ball . If the bat and ball were in contact for 0.012 sec , find the average force exerted on the ball by the bat 20 m/s 30 m/s.
Answer:
What you say ¡
no pagal
Mayur is very very shame
Sorry