Answer:
it is the Hubble law
Explanation:
Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from the Earth at speeds proportional to their distance. In other words, the farther they are the faster they are moving away from Earth.
Answer:
The hubble law
is the observation in physical cosmology that galaxies are moving away from the Earth at speeds proportional to their distance. In other words, the farther they are the faster they are moving away from Earth.
What is the difference between a scalar and a vector?
Answer:
Vector has magnitude and direction, scalar only has magnitude.
Answer:
A quantity that has magnitude but no particular direction is described as scalar. A quantity that has magnitude and acts in a particular direction is described as vector
3. A fighter jet covers a distance of 895m while accelerating from 22m/s to 35m/s. How long (in
seconds) did this take to happen?
Answer:
31.404 seconds
Explanation:
To answer this equation, SUVAT is your best option utilizing and rearranging the known values to solve for the unknown.
here we have the values for
s=895
u=22
v=35
t= the unknown value
in this instant the equation s=0.5 x (u+v)t is the best equation to use
so we sub in the known values
895=0.5 x (22+35)t
rearrange to solve for t
895=28.5t
895/28.5=t
t=31.404 seconds (rounded to 3 decimal places)
Waves are observed passing under a dock. Wave crests are 8.0 meters apart. The time for a complete wave to pass by is 4.0 seconds. The markings on the post submerged in water indicate that the water level fluctuates from a trough at 6.0 meters to a crest at 9.0 meters. Calculate the velocity of the wave.
Answer:
2 m/s
Explanation:
The crest of the wave moves 8 meters in 4 seconds, so its speed is ...
(8 m)/(4 s) = 2 m/s
Answer:
2 m/s is the answer .
Explanation:
#CarryOnLearningWhich of these would have the highest temperature?
ice
water
water vapor
Answer:
Water vapor
Explanation:
Water Vapor has the highest temperature, due to its being in a gas state, and gases usually have very high temperatures, for example steam when you boil pasta.
Hope this helps you! Have a nice day!
The law of conservation of momentum states that, if left alone, what happens to the total momentum of two interacting objects that make up a system? it increases over time it remains the same it eventually becomes zero changes based on how they collide
Answer:
it remains the same
Explanation:
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
Momentum = mass * velocity
The law of conservation of momentum states that the total linear momentum of any closed system would always remain constant with respect to time.
Hence, the law of conservation of momentum states that, if left alone, the total momentum of two interacting objects that make up a system remains the same.
This ultimately implies that, if two interacting objects exert forces only on each other, their total momentum will remain the same i.e it is conserved.
Answer:
it remaines the same :)
Explanation:
PLEASE HELP ME I NEED THE ANSWER FAST 1 A diver diving into a pool has
a. no energy b. potential energy c. kinetic energy
Answer:
C
Explanation:
A diver diving into a pool has kinetic energy when they hit the water, and that energy transfers and is given to the water, which splashes.
During an investigation on vehicle safety, four different vehicles were driven at a test wall at the same speed. The data from this investigation is in the table below. Which vehicle would most likely hit the test wall with the greatest amount of force? *
That's the pickup truck.
Explanation:
Here it is.
Imagine that someone is walking across a carpeted room and then touches a metal doorknob. Describe what happens when a doorknob is touched if there’s a buildup of static electricity.
Answer: if the door knob is metal the static electricity will exit your body, but shock you in the process
Explanation:
Why is it important for body cell to have twice and many chromosomes as sex cells?
Answer:
Why sex cells only need half the number of chromosomes compared to other cells in the body? As gametes are produced, the number of chromosomes must be reduced by half. Why? The zygote must contain genetic information from the mother and from the father, so the gametes must contain half of the chromosomes found in normal body cells.
Explanation:
Brainliest Plzz
Answer:
During Mitosis, the chromosomes split at G2 Phase.
What type of process occurs with no heat flow?
A. Isobaric
B. Isothermal
C. Adiabatic
D. Isolated
Answer:
Adiabatic
Explanation:
Adiabatic is defined as a process in which no heat transfer takes place.
Which statement describes the difference between ionic bonds and Van der
Waals forces?
A. Ionic bonds involve the sharing of electrons between atoms, while
Van der Waals forces involve the attraction of nonpolar molecules.
B. Ionic bonds involve the transfer of electrons between ions, while
Van der Waals forces involve the sharing of electrons between
atoms.
C. lonic bonds involve the transfer of electrons between ions, while
Van der Waals forces involve the attraction of nonpolar molecules.
D. Ionic bonds involve the attraction of nonpolar molecules, while
Van der Waals forces involve the transfer of electrons between
ions.
Answer:
C. lonic bonds involve the transfer of electrons between ions, while
Van der Waals forces involve the attraction of nonpolar molecules.
Explanation:
Just did it
Can someone answer fast
Physics help please! Offering 75 pts!
Answer:
A
Explanation:
i got it from 2021 edge
can someone help me please
Answer:
I think its distance
Explanation:
when measuring how far a p.o art u can use mm
An impulse of 12.2kg m/s is delivered to an object whose initial momentum is 4.5kgm/s. What is the object's final momentum?
Answer:
Object's final momentum = 16.7 kg-m/s
Explanation:
Given that,
Impulse, J = 12.2 kg-m/s
Initial momentum, [tex]P_i=4.5\ kg-m/s[/tex]
We need to find the object's final momentum. We know that the impulse is equal to the change in momentum. So,
Impulse = change in momentum
[tex]J=P_f-P_i\\\\P_f=J+P_i\\\\P_f=12.2+4.5\\\\P_f=16.7\ kg-m/s[/tex]
So, the object's final momentum is 16.7 kg-m/s.
Given:
Impulse, [tex]J = 12.2 kg-m/s[/tex]Initial momentum, [tex]P_i = 4.5 \ kg-m/s[/tex]We know the relation,
→ [tex]Impulse = Change \ in \ momentum[/tex]
or,
→ [tex]J = P_f-P_i[/tex]
then,
→ [tex]P_f = J+P_i[/tex]
By substituting the values,
[tex]= 12.2+4.5[/tex]
[tex]= 16.7 \ kg-m/s[/tex]
Thus the above answer is right.
Learn more about momentum here:
https://brainly.com/question/18551770
A 4kg object is moving at 5 m/s . A 10-N force is applied in the direction of motion and if the object has a final velocity 10m /s. calculate the distance that the object moves
Answer:
Distance, S = 15m
Explanation:
Given the following data;
Mass = 4kg
Force = 10N
Initial velocity = 5m/s
Final velocity = 10m/s
To find the distance;
First of all, we would calculate the acceleration
Force = mass * acceleration
10 = 4*acceleration
Acceleration = 10/4
Acceleration = 2.5m/s²
Now to find the distance, we would use the third equation of motion.
[tex] V^{2} = U^{2} + 2aS [/tex]
Where;
V represents the final velocity measured in meter per seconds. U represents the initial velocity measured in meter per seconds. a represents acceleration measured in meters per seconds square.S represents the displacement measured in meters.
Substituting into the equation, we have;
10² = 5² + 2*2.5*S
100 = 25 + 5S
5S = 100 - 25
5S = 75
Distance, S = 75/5
Distance, S = 15m
What are forces? (Check all that apply)
-Push or pull
-An action that has the ability to change potion
-Actions that can increase or decrease the speed of a moving object
-Actions that can change the direction in which an object is moving
-Gravity
-Electromagnetic
-Strong Nuclear Force
-Weak Force
-Matter
Answer:
Push or Pull
Gravity
Strong Nuclear Force
Weak Force
Explanation:
Car A has twice the mass of Car B; both travel at the same speed. Compared to Car B. Car A has:
o the same the energy
o four times the energy
Otwice the energy
one-half the energy
one-fourth the energy
Answer:
Car A has twice the energy of car B.
Explanation:
The kinetic energy of an object is given by :
[tex]K=\dfrac{1}{2}mv^2[/tex]
Where
m is the mass
v is the speed of the object
Car A has twice the mass of Car B. Both travel at the same speed i.e.
[tex]m_A=2m_B[/tex]
So,
[tex]\dfrac{K_A}{K_B}=\dfrac{(1/2)m_Av^2}{(1/2)m_Bv^2}\\\\=\dfrac{2m_B}{m_B}\\\\\dfrac{K_A}{K_B}=2\\\\K_A=2\times K_B[/tex]
So, the kinetic energy of car A is twice of the kinetic energy of car B.
Answer:
Car A has twice the energy
Explanation:
You have five employees. They worked the following hours last week: 40, 37, 33, 25, 20. What was the mean number of hours worked?
Answer:
[tex]40 + 37 + 33 + 25 + 20 \div 5 = 155 \div 5 = 31[/tex]
Answer:
Or you could just say 31 :)
Explanation:
I need help with this problem on science 8th grade here is the picture of the assignment place help me
Answer:
the first one is D
Explanation:
so if the others u put are right the the second would be c
Can someone PLEASE help me with this. Anyone that’s good in physics pls
A simple circuit has three resistors connected in series. The resistors are 14 ohms 12 ohms and 9 ohms. What is the total resistance of the circuit?
Answer:
RT = 35 Ohms
Explanation:
Let the three resistors be R1, R2 and R3 respectively.
Given the following data;
R1 = 14 Ohms
R2 = 12 Ohms
R3 = 9 Ohms
To find the total resistance, RT;
Since all the resistors are connected in series, the total resistance is equal to the sum of all three resistance of the resistors.
RT = R1 + R2 + R3
Substituting into the equation, we have
RT = 14 + 12 + 9
RT = 35 Ohms.
Therefore, the total resistance of the circuit is 35 Ohms.
Look at the image provided, it shows forces acting on a box.
What is the NET FORCE on the box?
A certain reptile species is an herbivore and exists only on an isolated island. Which of the following would most likely result in the extinction of the reptile species over a period of twenty thousand years?
The reptile species produces many offspring with many unique traits, and the vegetation remains constant
The reptile species produces many offspring with some unique traits, and the vegetation remains constant
The reptile species produces few offspring with no unique traits, and the vegetation changes quickly
The reptile species produces many offspring with some unique traits, and the vegetation changes slowly
Answer:
A
Explanation:
Answer:
The answer is D
Explanation:
I took he test and got it correct.
A fault is formed by the movement of a ___ plate boundary
A.convergent
B.traditional
C.divergent
D.transform
5.Noise pollution is harmful forRequired to answer. Single choice.Immersive Reader
(1 Point)
Human
Cat
Bird
All
Answer:
D: All
Explanation:
In cats, noise pollution causes what is known as acoustic stress in them.
In birds, noise pollution delays their nesting because it makes their songs which they use to probe to be at a low frequency.
Noise pollution affects humans because it can lead to loss of hearing, sleep disturbance, stress, high blood pressure e.t.c
Therefore, it affects Cats, birds and humans.
So option D is correct.
If I am walking towards the rising sun and turns left, on which side will my shadow be? PLEASE ANSWER BY 11.20 AT 8TH FEB 2020....
Answer:
The shadow would be on your left side.
Explanation:Give brainliest if this helped :)
Question 1 of 10
How much thermal energy is needed to melt 1.25 kg of water at its melting
point?
Use Q = mass x latent heat of fusion.
Properties of water
Property
Value
Melting point
0°C
Boiling point
100°C
Cliquid
4.18 kJ/(kg.°c)
Latent heat of fusion
333 kJ/kg
Latent heat of vaporization
2260 kJ/kg
The thermal energy needed to melt 1.25 kg of water at its melting point is 416.25 kJ.
What is the latent heat of fusion?The latent heat of fusion is the amount of thermal energy required to change the phase of a substance from a solid to a liquid state without a change in temperature.
When a substance is in a solid state, the molecules are packed closely together and are held in a rigid structure by intermolecular forces. As heat is added to the solid, the temperature of the substance increases until it reaches the melting point, which is the temperature at which the solid starts to change into a liquid.
At the melting point, the added thermal energy is used to break the intermolecular bonds that hold the molecules in the solid structure. The energy absorbed during this process causes the molecules to become less ordered and to move more freely, resulting in a liquid state. However, during the melting process, the temperature of the substance remains constant until all of the solid has melted.
The latent heat of fusion is a property of the substance and is defined as the amount of energy required per unit mass to change the phase from solid to liquid. It is usually measured in units of joules per kilogram (J/kg) or kilojoules per kilogram (kJ/kg).
The latent heat of fusion is an important concept in thermodynamics and is used in many applications, such as the melting of ice, the solidification of molten metals, and the formation of igneous rocks.
Here in the Question,
To calculate the thermal energy needed to melt 1.25 kg of water at its melting point, we can use the formula:
Q = mass x latent heat of fusion
where Q is the thermal energy required, and the latent heat of fusion is the amount of energy required to change the phase of a substance from solid to liquid without changing its temperature.
Substituting the given values, we get:
Q = 1.25 kg x 333 kJ/kg
Q = 416.25 kJ
Therefore, 1.25 kilogram of water requires 416.25 kJ of thermal energy to melt at its melting point.
To learn more about specific heat click:
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#SPJ7
Please help!! I'll name you brainliest!!
Answer:
b
Explanation:
in this condition the atom is not stable so in order to become stable ( trying to have the last energy level completely filled like the Nobel gases) it tends to lose or gain or share the electrons and that debend on its condition . I hope that's the right answer
PLS ANSWER FAST WILL GIVE BRAINLY!! BUT ONLY IF YOU KNOW!!
Fill in the blank
The atomic number is the same as the number of____in an atom
Whats the word for when "velocity equals 0 and direction changes" Its 14 letters, and I have _ _ _ _ i _ _ _ _ _ h_ i _ _ t
Answer:
Maximum Height
Explanation:
The maximum height is the highest point reached by a projected body. At this point, final velocity, v of the body is equal to 0; because upward motion is at its peak and the body start to fall again.
Hence, final velocity v is always 0 at this maximum point and the direction of motion changes from upward to downward.
Final velocity at this maximum height is zero because of the directional change experied by the object and the fact that upward motion of the body terminates at this point.