Answer:
b) gains electrons
Explanation:
When transferring electric charge, an object becomes negative when it gains electrons
Which of these correctly describes what would happen to a system if 100 J of heat energy is added to it?
1. The potential energy of the system will increase and this will increase the attraction between its particles.
2. The strength of the bonds in system will increase and this will decrease the speed of its particles.
3. The kinetic energy of the system will increase and this will increase the speed of its particles.
4. The kinetic energy of the system will decrease and this will decrease the speed of its particles.
The correct statement to describe that when a 100 J of heat energy is added to the system, then the kinetic energy of the system will increase and the speed of the particles will also increase. Hence, option 3 is correct.
What is Kinetic energy?The force that an object has because it is moving is known as kinetic energy in physics. It is defined as the quantity of effort required to accelerate anybody of a specific mass from rest to its specified velocity. The body keeps its kinetic energy after acquiring it during acceleration, barring changes in speed.
When slowing from its current pace to a condition of rest, the body expends the very same amount of energy. Any term in the Lagrangian of a system that has a derivative in regard to time is formally referred to as kinetic energy.
When the energy is added to the system the gap between the particles will increase due to which the velocity of the molecules will increase and with increase in the velocity the kinetic energy will also increase automatically.
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Matthew is looking at two different atoms. One has 8 protons and 10 neutrons. The other substance has 8 protons and 12 neutrons. Are these the same element? Why or why not?
Answer:
They are the same element.
Explanation:
Atom >>>>> Proton >>>> Neutron
A >>>>>>>> 8 >>>>>>>>> 10
B >>>>>>>> 8 >>>>>>>>> 12
From the table above we can see that both atoms have the same proton number.
Therefore, they are the same element because they have the same proton number which means that they have the same atomic number. The element in this case is existing as an isotope in that the atoms have the same proton number but different neutron number.
The mass of Mars is 6.42 × 1023 kg. Its moon Phobos is 9378 kilometers away from Mars and has a mass of 1.06 × 1016 kg. What is the gravitational force between Mars and Phobos? 5.16 × 1015 N 5.16 × 1021 N 4.84 × 1022 N 4.84 × 1025 N
Answer:
A on Edge 5.16 x 10^15 N
Explanation:
The gravitational force between Mars and Phobos is 5.16*10^15 N.
Using the formula
F = G m1 m2/ r^2
= 6.67*10^-11*6.42*10^23*1.06*10^16/(9378)^2
= 45.39*10^28/87946884
= 5.16 * 10^15 N
What is gravitational force ?"The force of attraction on a body by earth is called gravitational force." Example : The leaves and fruits fall from a tree downwards towards the ground, water in a river flows down streams, a ball thrown up goes to a height and then returns back on ground are some examples of motion due to gravitational force.
What is phobos ?"Phobos is the larger of Mars' two moons and is 17 x 14 x 11 miles (27 by 22 by 18 kilometers) in diameter. It orbits Mars three times a day, and is so close to the planet's surface that in some locations on Mars it cannot always be seen."
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Resistance is a measure of.
a) the energy per unit charge in a circuit
b) how hard it is for electrons to move through the circuit
c) how hard it is for electrons to move through the battery
d) the number of charge carriers in a circuit
These waves are often used as a means to transfer digital information such as a text message or website.
A)Infrared
B)Ultraviolet
C)Radio
D)Visible Light
Answer:The answer is C
Explanation:
The waves are often used as a means to transfer digital information such as a text message or website is radio waves. The correct option is C.
What is digital information?Digital information generally consists of data that is created or prepared for electronic systems and devices such as computers, screens, calculators, communication devices. These information are stored by cloud.
The wave used for the same purpose is radio waves which has the high frequency range.
Thus, the correct option is C.
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The mean diameter of the Earth is 12.76 x 103 km. What is the surface area of the Earth in m2 ?
(A) 4.01 x 107
(B) 5.12 x 1014
(C) 1.09 x 1021
(D) 1.68 x 109
(E) 2.05 x 1015
Answer:
The Answer is B
Explanation:
Hope this Helps :D
The diagram shows a motion map
Which best describes the motion of the object between 1
and 4 seconds
toata
• The object has decreasing acceleration and increasing
velocity
The object has positive acceleration and eventually
stops
The object has decreasing acceleration and decreasing
velocity
The object has negative acceleration and eventually
stops
Answer:
the object has decreasing acceleration and increasing velocity
A man of mass 60kg climbs up a 20m long staircase to the top of building 10m high. What is the work done by him
Answer:
mass=60kg
h=20m
g=10m/s²
here the work done by the body is equal to its potential energy
work done=P.E.
As we know that P.E.=mgh
putting values
P.E.=60kg×20m×10m/s²
P.E.=1200kgm×10m/s²
P.E.=12000Nm
so the work done by the body is 12000Nm
A planet has a period of revolution about the Sun equal to Tand a mean distance from the Sun equal to R. T varies directly as _____.
A. R
B. R²
C. R3
D. R4
E. R5
Answer:
C. R3
Explanation:
Answer:
C. R3
Explanation:
Plato
When a fuse blows
Check all that apply
O A it's a sign that there might be something causing too much
current to flow in the circuit
O B it is best to replace it with a much larger fuse
o you should replace the fuse and check to see what might have
caused it to blow
O the circuit catches fire
Answer: A
it's a sign that there might be something causing too much
current to flow in the circuit
Explanation: When a fuse blows, one of the causes may be short circuit. Also, it's a sign that there might be something causing too much
current to flow in the circuit leading to overloading. That is, drawing to much of power that can cause the metal inside the fuse to melt.
Option A is the best answer.
Which object has the least amount of kinetic energy?
Spinning top
Ball rolling water falling out of cup
Roller coaster
Answer:
Not sure about the answer but I think its roller coaster
Explanation:
Answer:
golf ball
Explanation:
it is correct on edge
It takes 50 N to move a desk 0.4 m high. What is the work done? W=F*d *
a) 20 J
b) 125 J
c) 0.008 J
d) 100J
brainliest for the best answer, asap plz
for science lovers
Answer:
A) 20J
Explanation:
Work = Force x Distance
Force = 50N
Distance = 0.4M
Work = 50 x 0.4 = 20J
On the moon, what would be the force of gravity acting on an object that has a mass of 7 kg?
Answer: 7 kg
Explanation:
How many suns do you think are in our galaxy? Explain your answer PLS HELP ASP BEST GETS BRAINLIEST
Answer: There is only one Sun in the galaxy … that is the thing that rises in the morning and sets at night. However, there is a use of “sun” to signify any old star … nobody knows exactly there might be trillions out there
Explanation:
which property of substances help to make a thermometer?
I NEED HELP.
Answer:
Mercury
Explanation:
Mercury streches when it is hot so that is why it goes up when the temperature is higher
Come up with an example of classical conditioning in your own life or in the real world. Be sure to identify the unconditioned stimulus, unconditioned response, conditioned stimulus, and conditioned response. Also explain, in this example, how extinction would occur.
Answer: All learning occurs through interactions with the environment; The environment ... In the before conditioning phase, an unconditioned stimulus is paired with an ... In our example, the conditioned response would be feeling hungry when you heard ... reinforce the salivation response to make sure the behavior is well learned.
Measurements show that the wavelength of
a sound wave in a certain material is 18.0 cm. The
frequency of the wave is 1900 Hz. What is the speed of
the sound wave?
Answer:a sound wave in a certain material is 18.0 cm. The
frequency of the wave is 1900 Hz. What is the speed of
Explanation:
If you have two waves, one with a frequency of 4.4 x 1010 Hz and one with a frequency of 3.6 x 1014 Hz, which has the highest energy? Justify your answer
with evidence from the lesson and/or mathematically.
Answer: frequency of 3.6 x 10^14 Hz
Explanation:
If someone have two waves, one with a frequency of 4.4 x 1010 Hz and one with a frequency of 3.6 x 1014 Hz, the one with higher frequency ( 3.6 × 10^14) will have the higher energy.
From electromagnetic spectrum,
E = hf
Where
E = energy
F = frequency
h = Planck constant
The one with higher frequency will have the higher energy since energy is directly proportional to the frequency.
The one with higher frequency ( 3.6 × 10^14) will have the highest energy.
What is the frequency?Frequency is the number of oscillations per second in the sinusoidal wave.
If someone have two waves, one with a frequency of 4.4 x 10¹⁰ Hz and one with a frequency of 3.6 x 10¹⁴ Hz.
From electromagnetic spectrum, energy associated with the frequency is
E = hf
Where, E = energy, f = frequency and h = Planck constant
The Planck's constant is the constant value. The energy is directly proportional to the frequency.
Thus, The one with higher frequency will have the higher energy since energy is directly proportional to the frequency.
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Click on the boxes below to indicate the number of electrons or protons in each labeled position for a zinc atom (z=30, a=65). Please carefully note the specific information requested for the nucleus by the letter designation.
Answer:
A 35
B 2
C 8
D 18
E 2
Explanation:
The number of electrons in the positions of the Zn atom, A, B, C, D and E are 30, 2, 8, 18 and 2 respectively.
What is meant by electronic configuration ?The arrangement of electrons within the orbitals of an atom is known as its electronic configuration.
Here,
The atomic number, which is equal to the number of protons in every neutral atom, is made up of a constant number of electrons in each neutral atom.
The atomic number of an atom is represented by the letter Z.
The mass number of an atom is the sum of the number of protons and neutrons, which are together known as the nucleons, within the nucleus. It is represented by the letter A.
The atomic number of Zinc is given,
Z = 30
From the figure, the electronic configuration can be represented as,
A = 30
which is the total number of electrons in Zn atom.
B = 2
which is the innermost orbital.
C = 8
D = 18
E = 2
Hence,
The number of electrons in the positions of the Zn atom, A, B, C, D and E are 30, 2, 8, 18 and 2 respectively.
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How do you inhibitors work
Answer:
By binding to enzymes' active sites, inhibitors reduce the compatibility of substrate and enzyme and this leads to the inhibition of Enzyme-Substrate complexes' formation, preventing the catalyzation of reactions and decreasing (at times to zero) the amount of product produced by a reaction.
Explanation:
Hannah knows she has some natural skill at field hockey, but she never practices in the off season. This is an example of
Answer:
wasting talent
Explanation:
Please Help! When drawing free-body diagrams, does the label "centripetal force" get used? Explain why.
Explanation:
No. Centripetal force is a not a force itself, but rather a sum of forces. From Newton's second law:
∑F = ma
∑F = m v²/r
So centripetal force does not get used on a free body diagram.
Match the type of metamorphism to its best definition.
Impact
metamorphism
?
The process in which a
rock changes as a result
of heat generated from
magma.
Dynamic
metamorphism
?
The process in which a
rock changes due to
pressure directed on it.
Contact
metamorphism
?
The process in which a
rock changes because of
extreme heat and pressure
caused by a meteorite
collision with Earth.
Regional
metamorphism
?
The process in which
buried rocks in a large
area are changed by heat,
pressure, and fluids.
Answer:
See Explanation.
Explanation:
Impact metamorphism:
The process in which a rock changes because of extreme heat and pressure caused by a meteorite collision with Earth.
Regional metamorphism:
The process in which buried rocks in a large area are changed by heat, pressure, and fluids.
Contact metamorphism:
The process in which a rock changes as a result
of heat generated from magma.
Dynamic metamorphism :
The process in which a rock changes due to
pressure directed on it.
The typing of metamorphism to its best definition should be explained below.
Matching with the best definition:
Impact metamorphism: The process where a rock changes due to extreme heat and pressure caused by a meteorite collision with Earth.
Regional metamorphism: The process where it should be buried rocks in a large area that should be changed by heat, pressure, and fluids.
Contact metamorphism: The process where a rock changes as a result
of heat generated from magma.
Dynamic metamorphism : The process where a rock changes due to
pressure directed on it.
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WHAT IS CHANGE OF STATE
Answer:
a change from one state (solid or liquid or gas) to another without a change in chemical composition
Explanation:
Explanation:
From Solid to. Liquid to Gas A change of state is the change of a substance from one physical form to another. All changes of state are physical changes. The particles have different amounts of energy when the substance is in different states.
Consider a situation where the acceleration of an object is always directed perpendicular to its velocity. This means that
(A) the object is increasing speed.
(B) the object is decreasing speed.
(C) the object is not moving.
(D) the object is turning.
(E) this situation would not be physically possible.
Answer:
this situation would not be physically possible
A wooden object (conically shaped) has a diameter of 8cm and height of 14cm. It floats in oil with 6cm of its height above oil level. Determine (a)The density of the object (b) If the volume of oil is twice that of the object, what fraction of oil is displaced after immersing the object?
Answer:
(a) The density of the object is 316/343 × the density of the oil
(b) The fraction of oil displaced after immersing the object is 0.461 of the oil volume
Explanation:
(a) The volume, V of a cone of height, h and base diameter, D = 2×r is given by the following equation;
[tex]V = \dfrac{\pi r^{2} h}{3}[/tex]
The volume of the object is therefore;
[tex]\dfrac{\pi \times 4^{2} \times 14}{3} = 74\tfrac{2}{3}\pi \, cm^3[/tex]
Where 6 cm is above the oil level we have;
[tex]\dfrac{\pi \times \left (6 \times \dfrac{4}{14} \right )^{2} \times 6}{3} = 5\tfrac{43}{49}\pi \, cm^3[/tex] above the oil level
Therefore, volume of the oil displaced = [tex]68\tfrac{116}{147}\pi[/tex] cm³ = 216.11 cm³
The density of the object is thus;
[tex]\dfrac{68\tfrac{116}{147}\pi}{ 74\tfrac{2}{3}\pi} \times Density \ of \ the \ oil = \dfrac{316}{343} \right ) \times Density \ of \ the \ oil[/tex]
The density of the object = 316/343 × the density of the oil.
(b) The volume of the oil = 2 × Volume of the object = [tex]2 \times 74\tfrac{2}{3}\pi \, cm^3 = 149\tfrac{1}{3}\pi \, cm^3[/tex]
The fraction of the volume displaced, x, after immersing the object is given as follows;
[tex]x = \dfrac{68\tfrac{116}{147}\pi}{ 149\tfrac{1}{3}\pi} = \dfrac{158}{343} = 0.461[/tex]
The fraction of oil displaced after immersing the object = 0.461 of the volume of the oil
A group of students gather for some fun during their summer break from school. Kendall and Jacoby have a water balloon fight during one of those “lazy” days of summer.
Marie, Gary, and Lois remember a video about work that their science teacher, Ms. Lewis, showed them before they left for vacation.
Marie says: “If Kendall throws a water balloon at Jacoby, there is no work being done. It’s just boys being boys.”
Gary says: “If Kendall throws a water balloon at Jacoby, there is work being done by Jacoby because he has to run.”
Lois says: “If Kendall throws a water balloon at Jacoby, there is work being done because Kendall had to exert a force that made the water balloon travel a certain distance to hit Jacoby.”
Which one of them is correct and why? Answer in complete sentences! You can type on this document and turn in.
Answer:
lois is right because throwing the water balloon is exerting a force running is not
ILL MARK YOU THR BRAINLIEST SOMEONE PLS HELP ITS URGENT.
The acceleration of a skydiver of mass 80 kg changes from 9.8 m/s ^ 2 to 5.8 m/s ^ 2 as he falls through the air. What is the air resistance experienced by him?
Answer:
320N
Explanation:
Net force =w- AR
AR=w -force
AR=mg- ma
AR=80*9.8- 80*5.8
AR=784- 464
AR=320N
Which statement correctly describes gravity?
O an attractive force that acts between all objects through contact
O an attractive force that acts between all objects without contact
O a repulsive force that acts between all objects through contact
a repulsive force that acts between all objects without contact
The second one is best. Gravity is an attractive force that acts between all objects, whether they're in contact or not.
Gravity is an attractive force that acts between all objects, whether they're in contact or not.
What is gravity?Gravity, also called gravitation, in mechanics, is the universal force of attraction acting between all matter. It is by far the weakest known force in nature and thus plays no role in determining the internal properties of everyday matter.
On the other hand, through its long reach and universal action, it controls the trajectories of bodies in the solar system and elsewhere in the universe and the structures and evolution of stars, galaxies, and the whole cosmos.
On Earth, all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth’s mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects. At Earth’s surface, the acceleration of gravity is about 9.8 metres (32 feet) per second per second.
Thus, for every second an object is in free fall, its speed increases by about 9.8 metres per second. At the surface of the Moon, the acceleration of a freely falling body is about 1.6 metres per second per second.
Hence Gravity is an attractive force that acts between all objects, whether they're in contact or not.
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Help ASAP please (: The waves with the MOST energy have
amplitudes.
frequencies and
A) low; large
B) low; small
C) high; large
D) high; small
Answer: C
high; large
Explanation:
The wave energy is related to its amplitude and frequency.
The wave energy is proportional to the amplitude of the wave. So, wave with the most energy will have high amplitude.
Also, frequency is related to wave energy. The larger the frequency, the more the energy of the wave.
Therefore, The waves with the MOST energy have high amplitudes and large
frequencies.