Explanation:
A unit length of the solid will expand in length by a fraction 1.0 × 10^-5 of the original per kelvin rise in temperature
How much work is done on a pumpkin with a force of 16 newtons when you lift it 15
meters?
Answer:
240 Joules
Explanation:
work = f x d
16 newtons is the force
15 meters is the distance
15*16= 240
Hilda looks at a cd and sees different colors. Which best explains why she sees different colors when light strikes a cd?.
Answer:
The smooth surface of the CD causes wavelengths of light to scatter. The CD at this point acts somewhat like a prism splitting white light into the colors of the rainbow. This is called the visible spectrum of light and is composed of the colors red, orange, yellow, green, blue, indigo and violet.
Explanation:
Answer: The reflected wave has less energy
Explanation:
The incident wave would be the light wave before it comes in contact with the CD. Once the incident wave hits the CD, there is a reflected wave which will have some portion of energy from the incident wave. The reflected wave is a different color from the incident wave due to the reflected wave having less energy. Less energy means a different wavelength of visible light
An empty gas balloon has a mass of 500 kg. The balloon is filled with 3000m^3 of helium gas, at standard temperature and pressure (STP). If the densities of air and helium, at STP are 1.3kgm ^ - 3 and 0.18 kgm^ -3 respectively. Calculate the resultant force acting on the balloon. [g = 10N / Kg]
The resultant force acting on the balloon is 10,400 N.
Resultant force acting on the balloonThe resultant force acting on the balloon is calculated by applying Newton's second law of motion as follows;
F = ma
where;
m is massa is accelerationMass of the helium gas = density x volume
= 0.18 x 3000
= 540 kg
Total mass of the balloon = 500 kg + 540 kg = 1,040 kg
Resultant force = mg
Resultant force = 1040 x 10 = 10,400 N
Learn more about resultant force here: https://brainly.com/question/25239010
In a parallel circuit, what’s happens to the current through each resistor when the voltage is doubled?
A. The current is doubled
B. The current is decreased by half
C. The current remains constant
Answer:
A
Explanation:
Voltage, V = Current, I x Resistance, R (V is directly proportional to I where R is constant of proportionality)
This means that when Voltage is increased, Current increases and when voltage is decreased, current decreases (and the inverse is true). Through all this though, resistance remains constant regardless.
The radder clocked sonic going 300 miles per hour how long will it take him to go 48.1 miles from Miami to Florida
Answer:
9.62 minutes 0r 0.16 of an hour
Explanation:
Speed = distance/time
300mph = 48.1 m/t
xt
300t = 48.1
÷300
t = 48.1/300
t = 0.16033333333 hr
0.16033333333 x 60 = 9.62 minutes
60 minutes in an hour
9.62/60= 0.16033333333 hr
So, around 10 minutes.
Hope this helps!
2. What factor determines the path a star will take in its post-main sequence?
O amount of light
O gravitational pull
Omass
O number of hydrogen molecules
Tori is using her working memory to complete a math problem in her calculus class. She also must retrieve a formula to be able to complete the problem. The primary area of the brain she is using is called the:
The primary area of the brain she is using is called the frontal cortex. It works combined with the hippocampus.
What is the frontal cortex?The frontal cortex or frontal lobe refers to a region of the cerebral cortex in the brain, which can be divided into the medial and lateral frontal cortex.
The frontal cortex is involved in major executive functions including, among others, cognitive skills, working memory, etc.
The frontal cortex works combined with the hippocampus to solve arithmetic mathematical problems.
Learn more about the frontal cortex here:
https://brainly.com/question/7304463
Yolanda is studying two waves. The first wave has an amplitude of 2 m, and the second has an amplitude of 3 m. Which statement accurately describes something that Yolanda can do as a part of her study? She can use destructive interference to generate a wave with an amplitude of 3. 1 m. She can use constructive interference to generate a wave with an amplitude of 1. 5 m. She can use destructive interference to generate a wave with an amplitude of 0 m. She can use constructive interference to generate a wave with an amplitude of 3. 5 m.
Option D is correct. She can use constructive interference to generate a wave with an amplitude of 3.5 m.
What is a wave?A wave is a phenomenon that flows across a material medium without leaving any lasting mark. Mechanical or electromagnetic waves can be used to classify them.
The wavelength of waves obtained by the interference is more than the two primary waves.
Hence Option D is correct. She can use constructive interference to generate a wave with an amplitude of 3.5 m.
To learn more about the wave refer to the link;
https://brainly.com/question/3004869
WHAT IS SOUND? EXPLAIN ITS WAVES
Answer:
sound is made up of vibrations or sound waves that we can hear these sound waves are formed by objects
Answer:
Sound wave consists to vibrating particles.These knock into other particles causing them to vibrate,and so the sound can travel away from the source.You can hear sound because the vibration in the air cause your ear drums to vibrate this vibration is converted into signals which travel down a nerve to your brain.
Explanation:
hpe its help
How does the interference of sound waves make sounds louder or softer?
Answer:
Changing the amplitude of a sound wave changes its loudness or intensity.
Explanation:
Constructive interference is what can make a sound louder, destructive interference will make a sound quieter. Two waves that add together may have different frequencies.
A post driver has a mass of 10kg. Calculate the change in GPE stored when the post driver is lifted by 50cm above the post. The gravitational field strength on earth is 10N/kg.
Answer:
500kJ
Explanation:
Common equation;
GPE = mgh
m = mass - in kg
g = gravitational field strength - in N/kg
h = height lifted/lowered - in meters
GPE = 10kg × 10N/kg × 5000m
GPE = 500000Nm
GPE = 500000J
GPE = 500kJ
Please mark me branliest thank you!!!!!!!
can someone please answer this, ill give you brainliest and your getting 100 points.
Answer: A
Explanation:Convection currents in the mantle Mantle convection is the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. The Earth's surface lithosphere rides atop the asthenosphere and the two form the components of the upper mantle.
Answer:
B
Explanation:
A is lithosphere (The above surface of earth)B is asthenosphereC is outer coreD is inner core .Cars are made of several metals, including iron, steel (a mixture of iron and carbon), aluminum, copper, and zinc. Which of these metals would the magnet attract?
Answer:
Steel
Explanation:
It can easily join with a magnet as long as u place it close to the magnet
Answer:
Zinc
Explanation:
it is because it is in group 2
**Compare a water molecule, H2O, to a carbon dioxide molecule, CO2.**
Which statement is true?
They are made from the same types of atoms combined in the same way.
They are made from different types of atoms, combined in the same way.
They are made from the same types of atoms, but combine in different ways.
They are made from different types of atoms, combined in different ways.
Answer: The answer to this question is: They are made from different types of atoms, combined in different ways.
The statement is true for the comparison of the water molecule, H2O, to a carbon dioxide molecule, CO2.
They are made from different types of atoms, combined in different ways.
Therefore the correct answer is option D
What is a Chemical compound?A chemical compound is a combination of two or more either similar or dissimilar chemical elements.
For example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.
The assertion is accurate when comparing the molecules of water and carbon dioxide, H2O, and CO2, respectively.
They are composed of several atom kinds that have been assembled in various ways.
Option D is the right response as a result.
Learn more about a chemical compound here,
brainly.com/question/12166462
#SPJ2
Calculate the ideal mechanical advantage of a lever in which effort arm is 60 cm and load the arm is 4 cm
Question :-
Calculate the ideal Mechanical Advantage of a Lever in which Effort Arm is 60 cm and Load Arm is 4 cm .Answer :-
Mechanical Advantage is 15 .Explanation :-
As per the provided information in the given question, we have been given that the Effort Arm of liver is 60 cm . Load Arm is given 4 cm . And, we have asked to calculate the Mechanical Advantage .
For calculating the Mechanical Advantage , we will use the Formula :-
[tex] \bigstar \: \: \boxed{ \sf { \: Mechanical \: Advantage \: = \: \dfrac{Effort \: Arm}{Load \: Arm} \: }} \\ [/tex]
Therefore , by Substituting the given values in the above Formula :-
[tex] \dag \: \: \sf { \: Mechanical \: Advantage \: = \: \dfrac{Effort}{Load} \: } \\ [/tex]
[tex] \longmapsto \: \: \sf{Mechanical \: Advantage \: = \: \dfrac{ \: 60 \: }{4} } \\ [/tex]
[tex] \longmapsto \: \: \textbf {\textsf {Mechanical \: Advantage \: = \: 15 }} [/tex]
[tex] \underline {\rule {180pt} {4pt}} [/tex]
Answer:
Calculate the ideal Mechanical Advantage of a Lever in which Effort Arm is 60 cm and Load Arm is 4 cm .
Answer :-
Mechanical Advantage is 15 .
Explanation :-
As per the provided information in the given question, we have been given that the Effort Arm of liver is 60 cm . Load Arm is given 4 cm . And, we have asked to calculate the Mechanical Advantage .
For calculating the Mechanical Advantage , we will use the Formula :-
\begin{gathered} \bigstar \: \: \boxed{ \sf { \: Mechanical \: Advantage \: = \: \dfrac{Effort \: Arm}{Load \: Arm} \: }} \\ \end{gathered}
★
MechanicalAdvantage=
LoadArm
EffortArm
Therefore , by Substituting the given values in the above Formula :-
\begin{gathered} \dag \: \: \sf { \: Mechanical \: Advantage \: = \: \dfrac{Effort}{Load} \: } \\ \end{gathered}
†MechanicalAdvantage=
Load
Effort
\begin{gathered} \longmapsto \: \: \sf{Mechanical \: Advantage \: = \: \dfrac{ \: 60 \: }{4} } \\ \end{gathered}
⟼MechanicalAdvantage=
4
60
\longmapsto \: \: \textbf {\textsf {Mechanical \: Advantage \: = \: 15 }}⟼Mechanical Advantage = 15
\underline {\rule {180pt} {4pt}}
how do plants get energy
Explanation:
They get energy by taking water and minerals from the ground by root and take CO2 by leaves.They get energy by absorbing sunlight and use in the process of photosynthesisA(n) 2602 kg van runs into the back of a(n)
989 kg compact car at rest. They move off
together at 7.2 m/s. Assuming no friction
with the ground, find the initial speed of the
van.
Answer in units of m/s.
Answer:
8.5 m/s
Explanation:
please see paper for the work!
someone please answer this, ill give you brainliest and your getting 100 points.
Answer:
b) Asthenosphere
Explanation:
The Earths crust is broken into plates. These plates float on the Asthenosphere. This is observed in the diagram.
They float on asthenosphere
D is the inner core (Very hot place)C is the outer core E is Mantal section .Read this for that question ok
Answer:
Jesus didn't have to die in the cross for us but yet he chose to
What are nebulas, and how are they affected by gravity?.
is oil a compound or element
Oil is a compound.
The species which contain more than one element is called compound. Oil is a mixture of many elements like liquid hydrocarbons, oxygen, nitrogen, sulphur, hydrogen gas etc. This elements form a large variety of structure.
Answer:
compound I believe
Explanation:
Many elements are present in the oil, such as liquid hydrocarbons, oxygen, nitrogen, sulfur, hydrogen gas, etc. These elements have many different structures.
Mrs. Fatima has a a small sports car that she uses to drop her kids off from school that has a mass of 5000 kg. Mr. Zaid drives a truck with a mass of 4200 kg. If the two vehicles are travelling down the road, side by side, at a speed of 75 km/hr, which one will have the most momentum? Explain *
[tex]\textbf{Use equation of momentum}[/tex]
[tex]p=mv[/tex]
[tex]\text{momentum\ =\ mass x velocity}[/tex]
[tex]\textbf{Substitute in the values}[/tex]
[tex]5000 \times 75 = 375,000 \text{\ kg\ km/hr}[/tex]
[tex]4200 \times 75 = 315,000 \text{\ kg\ km/hr}[/tex]
[tex]\textbf{The\ small\ sports\ car\ will\ have\ the\ most\ momentum.}[/tex]
Which will happen if a ball is thrown upward?
a. The ball will remains in the air.
b. The ball moves in a curve path.
c. The ball will go back to the ground
d. The ball continues to move upward.
science po ito.
Answer:
C
Explanation:
this is because of gravity
What is one thing that describes the motion of all waves?.
Answer:
always repeats itself
Explanation:
hope this helps
Answer: Cosine function
Explanation:
All physical waves can be described as linear combinations of cosine and sine wave functions.
What animal plays an important role in aerating, consuming, and recycling the soil?
snakes
earthworms
grasshoppers
salamanders
Answer:
Earthworms
Explanation:
I hope this answer helps
What has more KE, a 3 kg mass at 5 m/s or a 2 kg mass at 8 m/s?
how much mass does the sun have?
Answer:
1.989 •10^30 kg that is the aswer
Answer:
1.989 × 10^30 kg
Explanation:
yeppp
:p :p :p lol
ok is it just me or does "lol" look like a guy putting both his hands in the air???
what happens to heat energy after an object is cooled down lolololol asking for my bff
Answer:
Heat energy does not cool. Objects cool. Energy is not an object. Now, what happens when an object cools is that it gives off some of its thermal energy by one or more mechanisms: radiation, conduction, or convection. In radiation the energy escaped the object as electromagnetic waves - you see the red hot poker slowly dim as it cools, in conduction the energy is transferred Mechanically by the atoms of the hot object being in physical contact with those of the cool object and in convection the hot material moves to a cooler region where it gives up its heat energy by either radiation or conduction.
What is the gravitational force acting on a 556 kg object standing on the Earth's surface?
Answer:
gravity
Explanation:
Help!
What does Einstein's famous equation for nuclear energy, E=mc2, mean?
Mass and energy are produced in a nuclear reaction.
Mass and energy are destroyed in a nuclear reaction.
Some mass and energy are lost in a nuclear reaction.
Some mass is converted into energy in a nuclear reaction.
Answer:
1.It's the world's most famous equation, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.
2.The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.
3.In nuclear reactions, mass is never conserved—some mass is exchanged for energy and energy for mass. Nuclear reactions take place in an atom's nucleus. In a spontaneous nuclear reaction, such as radioactive decay, mass is "lost" and appears as energy in the form of particles or gamma rays.
4.In a nuclear reaction, mass decreases and energy increases. The sum of mass and energy is always conserved in a nuclear reaction.
5.The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.
Explanation:
hope it helps