If you hold a heavy weight over your head, the work you do is Is converted into potential energy.
What is Work done?Work is said to be done when the applied force displaces an object over a given distance.
Work - energy theoremWork energy theorem states that, the work done on object is equal to change in mechanical energy of the object.
When an object is raised over a given distance the work done is equal to the potential energy of the object given as;
W = P.E = mgh
Thus, If you hold a heavy weight over your head, the work you do is Is converted into potential energy.
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Which is one difference between visible and non-visible light.
If we add 50 Joules of thermal energy to a heat engine, and that heat engine does 30 Joules of work, how much thermal energy is left over?
20 Joules
10
None
All of it
Answer:
The correct answer should be
A. 20 Joules
Explanation:
I'm taking the K12 Unit Test: Energy - Part 1 right now
What is the mass of an object if a force of 48 Newtons produces an acceleration of 6 m/s2?
Answer:
m = 8 kg
Explanation:
According to Newton's second law of motion, F = ma.
Solving for m using algebra:
m = F ÷ a
m = 48 N ÷ 6 m/s² = 8 kg
According to Jean Piaget, unrealistic idealism often occurs in adolescence as a result of __________. Rational thought egocentrism environmental conditions lack of education.
According to Jean Piaget, unrealistic idealism often occurs in adolescence as a result of egocentrism. The inability to distinguish between self and others is referred to as egocentrism.
What is egocentrism?The inability to distinguish between self and others is referred to as egocentrism. It is, more precisely, the incapacity to effectively assume or comprehend any viewpoint other than one's own.
Egocentrism may be present in every stage of life, including childhood, adolescence, and maturity.
Hence option B is correct. According to Jean Piaget, unrealistic idealism often occurs in adolescence as a result of egocentrism.
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Answer:
egocentrismgot it right⬇️✅
A material that can be magnetized
A. has magnetic domains.
B. is called ferromagnetic.
C. must contain iron.
D. two of the above
Savanna regions developed during the Triassic period. Please select the best answer from the choices provided T F.
The statement 'savanna regions developed during the Triassic period' is TRUE. It is a type of biome.
What is a Savana?A savanna is a type of grassland biome located on low latitudes, in which grasses are the dominant vegetation.
Savana biome is characterized by warm temperatures all year and high levels of precipitation during the summer.
Moreover, the Triassic period is a geological period that ended 145 million years (Mya) ago.
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Answer:
true
Explanation:
When energy is added to a wave, how can the wave change? Select all that apply
A The amplitude can increase
B
The frequency can increase
C
The amplitude can decrease.
D
The frequency can decrease
E
The wavelength can increase.
F
The wavelength can decrease.
Answer:
c is the right answer to this
If a load of 600 N is overcome by a simple machine using an effort of 400 N. Calculate the mechanical advantage.
ㅤ➙ Mechanical Advantage= 1.5
Solution:Mechanical advantage allow to perform tasks much easier in terms of the force needed to apply, but must always obey the conservation of energy. Mechanical advantage is the measure of the ratio of output force to input force needed in a system, used to analysis the force in simple machines like livers and pulleys.
Mechanical advantage is given by:
[tex] \qquad\hookrightarrow\quad {\pmb{\sf{MA =\dfrac{Load}{effort} }} }[/tex]
We are provided with:
Load = 600 NEffort = 400 NTherefore,
[tex] :\implies\quad \sf{MA = \dfrac{L}{E} }[/tex]
[tex] :\implies\quad \sf{ MA = \dfrac{6\cancel{00}}{4\cancel{00}}}[/tex]
[tex] :\implies\quad \sf{MA=\dfrac{6}{4} }[/tex]
[tex]: \implies\quad \sf{ MA =\dfrac{3}{2}}[/tex]
[tex]: \implies\quad\underline{\underline{\pmb{ \sf{ MA = 1.5}}}}[/tex]
ㅤㅤ ㅤㅤ~Hence, the mechanical advantage is 1.5
Question :-
If a Load of 600 N is overcome by a Simple Machine using an Effort of 400 N . Calculate the Mechanical Advantage .Answer :-
Mechanical Advantage is 1.5 .[tex] \rule {180pt} {2pt} [/tex]
Given :-
Load = 600 NEffort = 400 NTo Find :-
Mechanical Advantage = ?Solution :-
As per the provided information in the given question, the Load is given 600 N . Effort is given as 400 N . And, we have been asked to calculate the Mechanical Advantage .
For calculating the Mechanical Advantage , we will use the Formula :-
[tex] \bigstar \: \: \boxed{ \sf{ \: Mechanical \: Advantage \: = \: \dfrac{Load}{Effort} \: }} [/tex]
Therefore , by Substituting the given values in the above Formula :-
[tex] \dag \: \: \sf{Mechanical \: Advantage \: = \: \dfrac{Load}{Effort} } \\ [/tex]
[tex] \longmapsto \: \: \sf{Mechanical \: Advantage \: = \: \dfrac{600}{400} } \\ [/tex]
[tex] \longmapsto \: \: \sf{Mechanical \: Advantage \: = \: \dfrac{6}{4} } \\ [/tex]
[tex] \longmapsto \: \: \sf{Mechanical \: Advantage \: = \: \dfrac{3}{2} } \\ [/tex]
[tex] \longmapsto \:\textbf{ \textsf{Mechanical Advantage = 1.5}} \\ [/tex]
Hence :-
Mechanical Advantage = 1.5 .[tex] \underline {\rule {180pt} {4pt}} [/tex]
true or false? Sound travels faster trough water than air
Answer:
true
Explanation:
Sound travels faster in water compared with air because water particles are packed in more densely.
A 26.5 kg crate is pushed with a force of 1,893 N, moving the crate a distance of 13.0 m. 579 W of power was used. For how much time was the force applied
Explanation:
[tex]t = \frac{f \times d}{p} [/tex]
t = ?
f = 1893N
d = 13m
P = 579W
t = { 1893×13}/(579)
t = 42.5secs
how much mass does the sun have? <33
Explanation:
1.989 × 10^30 kg
1.989 × 10^30 kg
Four spheres with positive and negative charges hang from strings.
Which illustration correctly shows how the spheres will behave?
A
B
C
D
The charges may be positive or negative. However, the behavior of the charges depend on the position of like charges and unlike charges.
What is a charge?An electrical charge may be positive or negative. We must recall that a charge may attract or repel another charge. According to the first law of electrostatics, like charges repel while unlike charges attract.
The image is not shown here however, the behavior of the charges depend on the position of like charges and unlike charges.
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What are the effects of gravity if you and a classmate are dropped out in space very far away from anything else
The effects of gravity if we were dropped out in space is the feeling of weightlessness.
What is Gravity?This is defined as the universal force of attraction acting between all matter.
In space, there is no ground to push against astronauts hence the feeling of weightlessness by the astronauts which was why it was chosen as the nost appropriate choice.
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People who have color vision deficiency typically lack one or more of the three cones that are sensitive to a particular wavelength. Please select the best answer from the choices provided T F.
The given statement is true. People who have color vision deficiency typically lack one or more of the three cones that are sensitive to a particular wavelength.
What is color blindness?The incapacity to determine the exact shades of color is known as color vision insufficiency. This optical disorder is also referred to as "color blindness," however only a few people are actually color blind.
The sensitivity of color-blind people towards a particular wavelength is high. They are more sensitive to a particular wavelength.
So People who have color vision deficiency typically lack one or more of the three cones that are sensitive to a particular wavelength.
Hence the statement is true.
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A tea kettle is boiling on the stove, and all of a sudden the whistle in the spout of the kettle starts shrieking. Steam rising from the boiling water causes the whistle to sound. What part of the water cycle does the steam represent
Answer:
Condensation is your answer
Explanation:
Condensation is the process of steam rising back into the atmosphere and the steam would be the evaporation "steam" hope this helped
Steam rising from the boiling water causes the whistle sound, which means that the convection part of the water cycle is present here.
What is convection?The process of convection entails the movement of a heated fluid, such as air or water, in order to transfer heat.
Convection is caused by the fact that most fluids have a tendency to expand when heated, which causes them to become less dense and rise due to the increased buoyancy. The homogeneous heating of air in a heated room or water in a kettle is due to circulation generated by this effect: heated particles expand the area they move in by moving faster against each other, rise, and afterwards cool and close again, increasing density and causing a corresponding sinking.
In forced convection, fluid is carried using mechanisms other than those that result from differences in density with temperature. Examples of forced convection include the air movement by a fan or water by a pump.
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#SPJ5
2 pts
What is a Push or Pull?
Force
O Weight
O Mass
Answer:
It is Force
Explanation:
A Force is a push or pull upon an object resulting from the objects interaction with another object.
A typical consumer purchases a set of smart light bulbs. The set comes with a centralized connection device and basic instructions for installation. For most of these types of devices, what steps may be involved in configuring them?
In order to properly configure the smart light bulbs, buyers should read the installation and configuration manual before connecting or using them to avoid possible damage due to improper handling.
What is the user manual?The user manual is a tool that is usually included when we buy a product. This manual includes all the characteristics of the object that we have purchased and the recommendations and specifications for correct use and maintenance to prolong its useful life.
According to the above, what the common buyer should do to prevent their bulbs from being damaged and to be able to configure them properly is to read the user manual.
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Exercise 3: A van of mass 1200kg was moving at a velocity of 8m/s when it was involved in a head on collision with a lorry moving in the opposite direction. Assuming that the van came to stop after the collision,
We need momentum
mass=1200kgVelocity=8m/s[tex]\\ \rm\Rrightarrow Momentum=Mass\times Velocity [/tex]
[tex]\\ \rm\Rrightarrow Momentum=1200(8)[/tex]
[tex]\\ \rm\Rrightarrow Momentum=9600kgm/s[/tex]
Explain why the moon appears illuminated
good morning to you all! can someone please answer this, ill give you brainliest and your earning 50 points.
Some natural hazards are preceded by geologic activities that allow for reliable predictions; other natural hazards occur suddenly, with no notice, and are not yet predictable.
TrueThere are some disasters that can be predicted like tornadoes, tsunamis etc.. But some hazards like earthquake cannot be predicted. Still the technology has not developed so much that it could predict earthquakes...~
Answer:
True
Explanation:
Yes we became modern a lot and are too ahead in terms of technology .We can predict cyclones way before it happens .We can predict tornadoes by measuring air pressure.But we are still unable to predict some hazardous things such as earth quake.explain what Is meant by the term potential energy and give four different examples of potential energies?
the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
A book on a table before it falls.
A child at the top of a slide.
Ripe fruit before it falls.
River water at the top of a waterfall.
a certain conductor has a resistnace of 200 ohms. What potential difference is required across the conductor in order to cause a current of 0.5 A to flow through it.
Answer:
100 volts
Explanation:
V= IR
V= 0.5×200
V= 100 volts
Calculate the resistance of the circuit and the amperage through all the resistors.
R = 2 Ω, R1 = 2 Ω, R2 = 4 Ω, R3 = 4 Ω, U2 = 2 V.
Choose one:
a.
R = 10 Ω; I = 5 A; I1 = 2 A, I2 = I3 = 1.5 A.
b.
R = 3 Ω; I = 1,5 A; I1 = 1 A, I2 = I3 = 0,5 A.
c.
R = 3 Ω; I = 2 A; I1 = 1 A, I2 = I3 = 0,5 A.
Answer: C
Explanation:
Resistors R1, R2 and R3 are in parallel so
1/R1 + 1/R2 + 1/R3 = 1 ohm
adding Resistor 'R' make it 2ohm + 1 ohm = 3 ohm
Whereas for current use formula I = V/R
How does wind affect the amount of rain?
3 or sentence
Explanation:
Hope it helps you!!Define force as the cause of acceleration?
Physics
Answer:
In short, a force applied to an object at rest causes it to accelerate in the direction of the force.
Explanation:
Newton's second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e. to change its velocity, at a constant rate.
Answer:
As the force acting upon an object is increased, the acceleration of the object is increased.
Explanation:
The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object.
can someone please answer this, ill give you brainliest and your getting 100 points.
Answer:
Social cost is the answer
:D let's hope that helped
Explanation:
How much force is need
to accelerate a 50 kg
object 20 m/s2?
Answer:
F = 1000 N
Explanation: When calculating force, F=ma.
So...
F = (50)(20)
1000 = (50)(20)
At what point is the speed at a maximum? .
A. Just before the skater reaches the very bottom
B. At the exact bottom
C. A little bit after reaching the bottom
Answer:
B. At the exact bottom
Explanation:
This is because his acceleration is at its max, which means his speed is at a max. HOPE THIS HELPS!
Answer:
B, At the exact bottom
Explanation:
i got it right
Which factors affect the electrical force between two objects?.
Answer:
the distance between the particles and the amount of electric charge that they carried.
Explanation:
hope this helps
Answer: charge and distance between them
Explanation:
The panel of solar cells transform ______________ energy into electrical energy.
Answer: The panel of solar cells transforms solar or sunlight energy into electrical energy.
Explanation:
The panels take the visible light waves emitted from the sun and convert them into electricity.
Answer:
sunlight or solar it absorb sun energy