Answer:
Chromatin is a mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division. Chromatin is located in the nucleus of our cells . The primary function of chromatin is to compress the DNA into a compact unit that will be less voluminous and can fit within the nucleus.
I hope this helps
Explanation:
Answer: Me again! Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells. Nuclear DNA does not appear in free linear strands; it is highly condensed and wrapped around nuclear proteins in order to fit inside the nucleus. Chromatin exists in two forms.
Explanation: Hope this helps! Happy Holidays!
1. João tem um tempo de reação de 0,2 s, pedala a bicicleta com velocidade de 5 m/s. Ele se depara com uma situação de emergência e aciona os freios. Qual foi a distância percorrida antes de frear? Tempo = 0,2s Velocidade = 5m/s = ou = ⋅
Responda:
1 metro
Explicação:
Dado que :
Tempo de reação = 0,2 segundos
Velocidade de deslocamento = 5 m / s
A distância percorrida antes da frenagem pode ser obtida usando a relação:
Distância = velocidade de viagem * tempo de reação
Distância percorrida antes da frenagem = (5 m / s) * (0,2s)
Distância percorrida antes da frenagem = 1 metro
What is the velocity of v2 if m1=82kg v1= 25 m/s m2=60kg?
Given :
[tex]m_1 = 82 \ kg\\\\v_1 = 257 m/s\\\\m_2 = 60 kg[/tex]
Let, us assume that momentum is conserved during the process.
To Find :
The velocity [tex]v_2[/tex] .
Solution :
Applying conservation of momentum :
Initial momentum = Final momentum
[tex]m_1v_1 = m_2v_2\\\\82\times 257=60\times v_2\\\\v_2 = \dfrac{82\times 257}{60}\ m/s\\\\v_2 = 351.23\ m/s[/tex]
Hence, this is the required solution.
A student is watching a video in order to understand how convection in the mantle of the Earth occurs. The video shows rock rising and sinking to make convection currents in the mantle. Which process is responsible for causing rock to rise? A. Rock is heated. B. Rock rapidly cools off. C. Rock increases in density. D. Rock undergoes intense pressure.
Answer:
A
Explanation:
Because of the convectional currents
If 300j of energy is available for every 75c of charge what is the potential difference
Answer: 4V
Explanation:
If 300j of energy is available for every 75c of charge, the voltage will be calculated by dividing the available energy by the charge. This will be:
= 300 / 75
= 4v
Therefore, the potential Difference will be 4V.
Which term best matches the description of an earthquake?
Where all mass movements occur
Acts as a lubricant to reduce friction between soil grains
Determines how much material is available for mass movement
Occurs when a sheet of rock moves downhill on a sliding surface
Can trigger a sudden mass movement
A force that works to pull material downslope
can tigger sudden mass movement
Question 2 of 5
This landform is on Mount Callaghan, British Columbia. It
formed as rocks slide down a steep cliff.
What directly led to this landform?
Answer:
Mass wasting
Explanation:
Took the test
Answer:
Mass wasting
Explanation:
because
A golf player hits a 0.045 kg golf ball that is initially at rest, changing its momentum by 4.2 kg times m/., What is the final speed of the golf ball?
Answer:
v₂ = 93.33 [m/s]
Explanation:
In order to solve this problem, we must apply the definition of momentum and amount of movement, which can be calculated by means of the following expression.
[tex]P=m*v[/tex]
where:
P = momentum [kg*m/s]
m = mass [kg]
v = velocity [m/s]
The amount of movement before and after the impact should be analyzed.
[tex](m_{1}*v_{1})+Imp_{1-2}=(m_{1}*v_{2})[/tex]
where:
m₁ = mass of the ball = 0.045 [kg]
v₁ = velocity of the ball before the hit = 0
Imp₁₋₂ = Impulse [kg*m/s]
v₂ = velocity after the hit [m/s]
[tex](0.045*0)+4.2=(0.045*v_{2})\\4.2 = 0.045*v_{2}\\v_{2}= 93.33 [m/s][/tex]
Differentiate between
Length and Time
Answer:
Concept: Physical Constants
Length is a measure of distance Time is a measure of concept of space.The difference between Length and Time is: Length is a measure of distance while Time is a quantity or measure of period.
Meaning of Length and TimeLength can defined as a fundamental quantity that describe the total space occupied by an object from end to end or the distance of an object from end to end.
Time can be defined the duration of an occurrence in space. Time is so important as it helps us adequately know the period of an event or occurrence.
In conclusion, The difference between Length and Time is: Length is a measure of distance while Time is a quantity or measure of period.
Learn more about Length : https://brainly.com/question/2217700
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Which type of fault is shown by the illustration below where the hanging wall moves down relative to the foot wall?
A. normal fault
B. reverse fault
C. strike slip fault
D. thrust fault
Answer:
A. normal fault NOT
B. reverse fault YES IT IS
Explanation:
I hope this helps
Have a Blessed Day
What is the mass of an object which has a force of 600 N acting on it and is travelling
with an acceleration of 15 m/s2?
Answer:
The mass of the object is 40 Kg
Explanation:
Net Force
According to the second Newton's law, the net force exerted by an external agent on an object is:
F = m.a
Where:
a = acceleration of the object.
m = mass of the object.
The mass can be calculated by solving for m:
[tex]\displaystyle m=\frac{F}{a}[/tex]
The object has a net force of F=600 N acting on it and travels at [tex]a=15\ m/s^2[/tex], thus the mas is:
[tex]\displaystyle m=\frac{600}{15}[/tex]
m = 40 Kg
The mass of the object is 40 Kg
If a car has a kinetic energy of 40000 J and is moving at a velocity of 25 m/s, what is the mass of the car? KE=1/2mv
Answer:
3200 Kg
Explanation:
Just apply the formula:
40.000 = 1/2 . m . 25
80.000 = 25m
m = 80.000/25
m = 3200 Kg
where would you expect light waves to move faster?
Answer:
In space
Explanation:
I took the quiz
Answer:
in space
Explanation:
Calculate the time needed to drive a car 100 kilometers if the car is traveling at a speed of 70 km/hr.
A.14 hours
B. 7 hours
C. .7 hours
D.1.4 hours
Answer:
D.1.4 hours
Explanation:
[tex]d\ =\ vt[/tex]
[tex]t\ =\ \frac{d}{v}[/tex]
[tex]t\ =\ \frac{100}{70}[/tex]
[tex]t\ =\ 1.42857142857[/tex]
Therefore, the answer is D 1.4 hours
A stone is thrown vertically upwards with an initial velocity 20m/s. Find the maximum height it reaches and the time taken by it to reach the height.
(g= 10m/s)
who gives answer with explanation i will make him braillint
Answer:
20metere
Y=VOYYT-1/2gt^2H=20m/s*2s-1/2*10m/s^2(2s)^H=40m-1/2*10 4s^240m-20H=20mA book weighing 2 Newtons is at rest on a table. The net force on the book is zero.
TRUE
FALSE
Answer: I think its True
What can the vacuole hold? (check all that apply)
A) water
B) waste
C) nutrients (food)
Answer:
C & A 100000%
Explanation:
i took this test before and i just made sure on safari . Its food (nutrients) and water
Clarissa has a credit card with a limit of $1,000 and pays her balance in full each month. If Clarissa needs a short-term loan, can she use her credit card as collateral at a pawn shop? Why or why not? Select the best answer from the choices provided. A. She cannot use it because a credit card is not collateral. B. If the balance on the credit card is zero, she can use it. C. If the balance on the credit card is $1,000, she cannot use it. D. She can use it if she increases the credit limit.
Answer:
B.she cannot use it because the credit card is not collareral
Explanation:
sorry if am wrong
A man attached a rope to a 30 kg box of books. He pulls with a force of 120 N at an angle of 60 with the horizontal. The kinetic friction is 33 N. Find the net force acting on the box.
Answer:
[tex]F_{net}=27N[/tex]
Explanation:
The forces acting on the box are:
The x-component of the pulling force [tex]F_{x}[/tex] and the friction force [tex]F_{fr}[/tex]. We assume positive in the direction of the pulling force in the x-component.
[tex]F_{net}=F_{x}-F_{fr}[/tex]
[tex]F_{net}=Fcos(60)-F_{fr}[/tex]
[tex]F_{net}=120cos(60)-33[/tex]
[tex]F_{net}=27N[/tex]
I hope it helps you!
How are water scarcity and water pollution related?
Water pollution contributes to water scarcity.
Water pollution is a solution to water scarcity.
Water scarcity is a solution to water pollution.
Water scarcity contributes to water pollution.
Answer:
A. Water pollution contributes to water scarcity.
Explanation:
Water pollution occurs when materials are disposed in water body, thus making it unfit for use. A polluted water can not be used for various purposes that water can be used for. Examples include: recreation, drinking, washing etc.
Water scarcity is the situation when available water is not sufficient for the use of organisms in a community. This majorly occurs in arid area.
Thus, since a polluted water renders water to be useless, therefore water pollution contributes to water scarcity.
Answer:
Water contributes to water scarcity
Explanation:
pls nobody has ever given me brainiest pls give me brainliest
In the data table , distance is measured in meters and time is in seconds. Calculate the mans average velocity using the equation (average velocity= total distance/total time.
Answer:
3.626 m/s
Explanation:
v=d/t
1. -0.02/0 = 0 m/s
2. 0.86/0.2 = 4.3 m/s
3. 1.71/0.4 = 4.275 m/s
4. 2.54/0.6 = 4.23 m/s
5. 3.32/0.8 = 4.15 m/s
6. 4.08/1.0 = 4.08 m/s
7. 4.79/1.2 = 3.99 m/s
8. 5.48/1.4 = 3.91 m/s
9. 6.15/1.6 = 3.84 m/s
10. 6.76/1.8 = 3.76 m/s
11. 7.37/2.0 = 3.66 m/s
12. 7.92/2.2 = 3.6 m/s
13. 8.45/2.4 = 3.52 m/s
14. 8.96/2.6 = 3.45 m/s
the mean of these numbers is 3.626
his average velocity ks 3.626 m/s
Can someone look outside and tell me what they see in the sky .The looks like a crystal ball or a mini moon
Answer:
i know it,s the ☁️ it looks like a crystal ball or a mini moon
How much power does it take to do 1000 J of work in 8 seconds?
A string of length 0.67 m and mass 2.0 g is held at both ends under tension. The string
produces a 700 Hz tone when it vibrates in the fourth harmonic. During this event, what is the
wavelength of the standing wave in the string?
.34
.55
.61
.45
.49
Answer:
The value is [tex]\lambda = 0.335 \ m[/tex]
Explanation:
From the question we are told that
The length of the string is [tex]l = 0.67 \ m[/tex]
The mass is [tex]m = 2.0 \ g = 0.002 \ kg[/tex]
The frequency produced at fourth harmonic vibration(i.e n =4 ) is [tex]f = 700 \ Hz[/tex]
Generally the wavelength of the string is mathematically represented as
[tex]\lambda = \frac{ 2L }{n }[/tex]
=> [tex]\lambda = \frac{ 2 * 0.67 }{ 4 }[/tex]
=> [tex]\lambda = 0.335 \ m[/tex]
A new copy of DNA is built from individual genes . The enzyme unwinds the DNA molecule, allowing replication to begin.
Answer:
This question is incomplete, the question is asking which enzyme unwinds the DNA molecule during DNA replication.
The answer is DNA HELICASE
Explanation:
DNA replication is the process whereby DNA molecule (genetic material) is duplicated in the genome i.e. DNA makes an identical copy of itself. The process of DNA replication is carried out in a step by step manner with various enzymes functioning specifically throughout the process.
The first step is to unwind the double-stranded DNA molecule into two single strands. The two single strands serves a templates to synthesize another pairing strand to make two DNA molecules in total. The unwinding of the DNA strands is carried out by an enzyme called DNA helicase.
Answer:
A new copy of DNA is built from individual
✔ nucleotides
.
The enzyme
✔ helicase
unwinds the DNA molecule, allowing replication to begin.
Explanation:
Difference between rest and motion?
Answer:
Rest and motion are relative terms. In simple terms, an object that changes its position is said to be in motion while the opposite action causes an object to be at rest.
Explanation:
Which of Newton's laws of motion describes the motion of an object that has a net
force of ON?
Newton's first and second laws of motion both do, but I think the one you're looking for is: The First Law of Motion. That description is a little more direct.
It says that if an object is not acted on by a net external force, then it continues in "constant, uniform motion".
Pete Zaria applies a 4.0-N force to a 1.0-kg mug of root beer to accelerate it over a distance of 1.0-meter along the countertop. Determine the work done by Pete on the mug and the mug's final kinetic energy and final velocity. PSYW
Answer:
Work done = 4 J
Final Kinetic Energy = 4 J
Explanation:
From the question,
Work done = force × distance
W = F×d................... Equation 1
Given: F = 4.0 N, d = 1.0 meter.
Substitute these values into equation 1
W = 4×1
W = 4 Joules.
Also,
Kenetic Energy = 1/2 × mass × velocity×velocity.
K.E = 1/2(mv²)........... (2).
But,
F = ma
Where F = 4 N, m = 1 kg.
a = 4/1 = 4 m/s².
Using,
v² = u² + 2as............. Equation 3
Where u = 0 m/s, a = 4 m/s², s = 1 m.
Substitute into equation 3
v² = 0² +2×4×1
v² = 8
v = √8 m/s.
Substitutting into equation 2
K.E = 1/2(1)(√8)²
K.E = 1/2(8)
K.E = 4 J.
Hence the work done and the Final Kinetic energy are thesame = 4 J
The work done by the Pete is 4.0 J. And its final velocity and kinetic energy are 2.82 m/s and 3.97 J respectively.
Given data:
The force applied by the Pete Zaria is, F = 4.0 N.
The mass of mud is, m = 1.0 kg.
The distance of the countertop is, s = 1.0 m.
The work by the Pete on the mug is equal to the product of applied force and the distance covered by the mug along the rooftop. Therefore,
W = F × s
W = 4.0 × 1.0
W = 4.0 J
Now, apply the third kinematic equation of motion to obtain the final velocity of the mug as,
[tex]v^{2} = u^{2}+2as[/tex]
Here, a is the magnitude of acceleration and its value is,
F = ma
4.0 = (1.0)a
a = 4.0 m/s²
Now,
[tex]v=\sqrt{0^{2}+(2 \times 4 \times 1)}\\\\v = 2.82 \;\rm m/s[/tex]
Now. the kinetic energy of the mug is calculated as,
[tex]KE = \dfrac{1}{2}mv^{2}\\\\KE = \dfrac{1}{2} \times 1.0 \times 2.82^{2}\\\\KE = 3.97 \;\rm J[/tex]
Thus, we can conclude that the work done by the Pete is 4.0 J. And its final velocity and kinetic energy are 2.82 m/s and 3.97 J respectively.
Learn more about the kinetic energy here:
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Which statement supports the idea that the Earth rotates on its axis?
A) The apparent size of the Sun changes throughout the year.
B) length of the day and night varies throughout the year
C) The seasons spring summer, fall, and winter) repeat in a cyclic mannet.
D)The stars appear to follow circular paths across the sky
Answer:
c
Explanation:
because the other would not make sense
Which of the following is a personal decision that involves science?
A. Will vitamins help me sleep better?
B. Is it fun to ride a train across the country? C. Should I live in an apartment or a house?
D. Are black or white laptops better looking?
3) A 100kg man runs up a staircase
3 cm high in 5 seconds. How much
pouwer does he develop?
Answer:
Power = 5.88 Watt
Explanation:
Mechanical Work and Power
Mechanical work is the amount of energy transferred by a force. Its SI unit is the joule.
Being the force vector and the displacement vector, the work is calculated as:
[tex]W=\vec F\cdot \vec s[/tex]
If both the force and displacement are parallel, then we can use the equivalent scalar formula:
[tex]W=F.s[/tex]
Power is the amount of energy transferred or converted per unit of time. In the SI, the unit of power is the watt, equal to one joule per second.
The power can be calculated as:
[tex]\displaystyle P=\frac {W}{t}[/tex]
Where W is the work and t is the time.
The m=100 Kg man goes up a distance of s=3 cm = 0.03 m in t=5 seconds. To calculate the work done against gravity the weight is considered as the force:
F = m.g = 100*9.8
F = 980 N
The work is:
W = 980*0.03
W = 29.4 J
Finally, the power is:
[tex]\displaystyle P=\frac {W}{t}[/tex]
[tex]\displaystyle P=\frac {29.4}{5}[/tex]
P = 5.88 Watt
