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Answer:

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.

Answer:

Speed is solved with time and distance but has no direction

Average velocity is solved with Δx/Δt and has a direction

disadvantages

Explanation:

releases heat when not required

opposes motion

Answer:

1

Explanation:

The correct answer is decreases in the troposphere and increases in the stratosphere.

For this reason, the density of gases decreases as the distance from Earth's surface increases. Put another way, air pressure (i.e., density) decreases as altitude increases.

The temperature of a place decreases with increasing altitude from the earth's surface.

Learn more about troposphere and stratosphere here: brainly.com/question/42841653

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Hello. You did not enter the data to which this question refers, which makes it impossible for it to have an exact answer. However, I will try to help you in the best possible way.

The forces that hold the elements together are called intermolecular forces. They are formed by covalent bonds between the molecules and can be called: dipole-induced (occurs between nonpolar molecules that have a negative pole and a positive pole) and dipole-dipole (occurs between polar moileculas, except when hydrogen is present).

Explanation:

Hooke's law is a law of physics that states that the force needed to extend or compress a spring by some distance scales linearly with respect to that distance—that is, Fₛ = kx, where k is a constant factor characteristic of the spring, and x is small compared to the total possible deformation of the spring.

Answer:

B.) Programming and Software

Explanation:

Answer on Edge

Answer:

its B

Explanation:

Answer:

30J

Explanation:

Given parameters:

Mass of box  = 1.5kg

Height  = 2m

Acceleration due to gravity  = 10N/kg

Unknown:

Change in gravitational potential energy  = ?

Solution:

 The change in gravitational potential energy is given as:

      ΔGPE  = mgh  

m is the mass

g is the acceleration due to gravity

h is the height

   ΔGPE  = 1.5 x 10 x 2  = 30J

Answer:

A) The bowling ball will hit the ground first. It is heavier, which has greater density, allowing it to reach the ground first.

B) Feather. If you want to be able to blow a bowling ball in a vaccum cleaner, it's almost impossible since it's very heavy. If it's a feather, it would be easier as it's light and the air inside it is able to force it down.

Note: I haven't learnt physics at all yet, this is just an attempt. I'm in 7th grade currently and I will probably be taking physics sometime in 9th grade.

Answer:

v =  1.51t and v = 30.2 m/s just before braking

Explanation:

Using v = u + at where u = initial velocity of car = 0 m/s (since it starts from rest), a = a1 = acceleration before braking = 1.51 m/s², t = t1 = time before braking = 20s and v = speed of car before braking.

Substituting the values of the variables into the equation, we have

v = u + at

v = 0 m/s + 1.51 m/s²t

v =  1.51t and its value after 20 s is

v = 1.51 × 20

v = 30.2 m/s which is the value just before braking.

Answer:

I will assume that “maximum force” implies the constant application of power  P  = 400 hp (international) to accelerating the vehicle. The force will therefore vary with speed as the vehicle accelerates. I will also assume that all engine energy goes into accelerating the vehicle, rather than rotating elements like its wheels.

In this case the 400 hp (equivalent to 298,280 watts) is applied for time  t  = 2 seconds. Therefore the kinetic energy of the vehicle is increased by:

ΔKE=Pt=(298,280)(2)=596,560  joules.

The initial kinetic energy is:

KEinitial=12mv2

=(0.5)(1600)(82)=51,200  joules.

Therefore final kinetic energy is:

KEfinal=KEinitial+ΔKE

=51,200+596,560

=647,760  joules

Therefore final vehicle velocity can be found:

KEfinal=12mv2

v=2KEfinalm−−−−−−−−√

=(2)(647,760)1600−−−−−−−−−−−√

= 28.455 m/s

Explanation:

Answer:

c

Explanation:

all the others r physical

Answer:

[tex]u = 4.56m/s[/tex]

[tex]T = 0.94s[/tex]

Explanation:

See comment for complete question

Given

[tex]h = 106cm[/tex] --- Height

Solving (a): The initial speed

To do this, we make use of the third equation of motion

[tex]v^2=u^2+2ah[/tex]

In this case:

[tex]v = 0m/s[/tex] --- final velocity at the maximum height

[tex]a = -g = -9.8m/s^2[/tex]

[tex]h = 106cm[/tex]

Convert height to metres

[tex]h = 1.06m[/tex]

Substitute these values in [tex]v^2=u^2+2ah[/tex]

[tex]0^2 = u^2 +2 *(-9.8) * 1.06[/tex]

[tex]0^2 = u^2 -20.776[/tex]

Collect Like Terms

[tex]u^2 =20.776[/tex]

Take the positive square root of both sides

[tex]u =\sqrt{20.776[/tex]

[tex]u = 4.55806976691[/tex]

[tex]u = 4.56m/s[/tex] --- approximated

Hence, the initial velocity is 4.56m/s

Solving (b): Time spent in the air.

This will be solved using the first equation of motion.

[tex]v = u + at[/tex]

Where:

[tex]v = 0m/s[/tex] --- final velocity at the maximum height

[tex]a = -g = -9.8m/s^2[/tex]

[tex]u = 4.56m/s[/tex]

So, we have:

[tex]0 = 4.56 - 9.8t[/tex]

Collect Like Terms

[tex]9.8t = 4.56[/tex]

Make t the subject

[tex]t = \frac{4.56}{9.8}[/tex]

[tex]t = 0.46530612244[/tex]

[tex]t = 0.47s[/tex] --- approximated

The above is the time it reaches the maximum height.

The time it stays in the air is:

[tex]T = 2t[/tex]

This gives:

[tex]T = 2*0.47s[/tex]

[tex]T = 0.94s[/tex]

Answer:

A water H2O

Explanation:

H2O is composed of 2 hydrogens which is represented H2 and the hydrogen is combined with one oxygen which forms water which is H2O

Answer:

A-B-C

Explanation:

Depends if you have good taste.

Answer:

Fusion or energy because I had that question in my school so I wrote it in my notes book so it fusion or energy I don’t now hop this help you

Explanation:

Answer:

A ball when from moving to stoping

Explanation:

Kinetic = energy of motion

Potential = energy stored

When you roll a ball on the ground, it gains kinetic energy, but then the ball starts to slow down until it stops and it remains at rest which means it's at potential energy. It went from moving (kinetic) to stoping (potential)

Hope this helped!

Have a supercalifragilisticexpialidocious day!

Answer:

The nucleus is a highly specialized organelle that serves as the information and administrative center of the cell. ... Most of the nuclear material consists of chromatin, the unstructured form of the cell's dna that will organize to form chromosomes during mitosis or cell division.

Explanation:

Answer:

See Explanation

Explanation:

Given

Cyclist 1:

[tex]Distance = 40km[/tex]

[tex]Time = 2hr[/tex]

[tex]Direction = East[/tex]

Cyclist 2:

[tex]Distance = 10km[/tex]

[tex]Time = 0.5hr[/tex]

[tex]Direction = West[/tex]

The question requires options. Since none is given,  I'll answer on a general term.

First, calculate the speed of both cyclists

[tex]Speed = \frac{Distance}{Time}[/tex]

Cyclist 1:

[tex]Distance = 40km[/tex]

[tex]Time = 2hr[/tex]

[tex]Speed = \frac{40km}{2hr}[/tex]

[tex]Speed = 20km/hr[/tex]

Cyclist 2:

[tex]Distance = 10km[/tex]

[tex]Time = 0.5hr[/tex]

[tex]Speed = \frac{10km}{0.5hr}[/tex]

[tex]Speed = 20km/hr[/tex]

The following can be deduced from above:

Answer:

11 moments docx has the answer

Explanation:

Answer:

It turns out that an object's kinetic energy increases as the square of its speed

Explanation:

A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph.

basiclly the faster the more impact it has when it suddenly stops or hit somthing

Answer:

Polarisation

Explanation:

When the electric field of an atom distorts then the cloud of negative charges move away from the clouds of positive charges. This movement of clouds in opposite direction causes separation of charges and and causes one side positive and one side negative. This process is known as polarisation