Think about multiplying the mass of each student by a factor to calculate each student’s kinetic energy. Is there a common factor that works for every student? If so, what’s this factor?

Answer:

250 pound = 113 kg i guess

Answer:

A

Explanation:

The phase of cell cycle consists of the cell readying itself for its division is called prophase of the cycle. It is the first phase in mitosis at which a cell duplicate into two daughter cells.

Cell cycle is a biological process by which a cell divide into two genetically identical daughters cells.  Prophase is the initial stage of cell division in both mitosis and meiosis. When the cell reaches prophase, DNA replication has already started after interphase.

The chromatin reticulum condenses and the nucleolus vanishes during prophase, which are the key events.  Other phases are interphase, anaphase etc. and the last stage is called the telophase.

Cell cycle is a very important biological process by which organisms are producing their offspring. This process differ in each level of organism where for all the starting phase is called prophase.

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Answer:

Physical change from solid to liquid where it is a reversible reaction as melted butter can be frozen to its original form

Answer:

i think answer b

Explanation:

Answer:

the first one

Explanation:

an atoms ability to attract other electrons and form a chemical bond

since other one got deleted :(

Electronegativity is an atom's ability to attract other electrons and form a chemical bond.

The tendency of an atom of a given chemical element to attract shared electrons (or electron density) when forming a chemical bond is known as electronegativity.

The electronegativity of an atom is affected by its atomic number as well as the distance between its valence electrons and the charged nucleus. The higher the associated electronegativity, the more an atom or substituent group attracts electrons.

Electronegativity is a simple way to quantify bond energy as well as the sign and magnitude of a bond's chemical polarity, which characterizes a bond along a continuous scale from covalent to ionic bonding.

Hence, electronegativity is an atom's ability to attract other electrons and form a chemical bond.

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Answer:

w=225000 J

E=225000 J

P=9000 W

P=22500 W

Explanation:

Ew=Fd=E

P=E/t

(A) w=225000 J

(B) E=225000 J

(C) P=9000 W

(D) P=22500 W

Aristotle famously described a force as anything that generates an object to undergo “unnatural motion. Sir Isaac Newton was one of the preferred scientists to explore gravity and force. Any kind of force is simply a push or a pull. It can be described as a push or pull on an object.

Thus, Ew=Fd=E (P=E/t)

Force can assemble a body that is at rest to move.

It can contain a moving body or slow it down.

It can accelerate the acceleration of a moving body.

It can also modify the direction of a moving body along with its build and size.

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Answer:

It helps melt the ice away on their walkway.

Explanation:

The salt makes the ice to freeze at a lower temperature. So when a solute (salt) comes into contact with the ice the freezing point is lowered.

Mark's ball falls to the ground because there is a gravitational pull from Earth's core. There are chemicals and elements in the Earth that make this pull. Mark's ball does not stay in the air for this reason.

Hope this helps you!

Answer:

This happened because there is a gravitational pull.

Explanation:

Answer:

Volume of an object (L): blue 105.00, yellow 105.00, green 102.50, red 101.25

Density of an object (kg/L) Mass / Volume: blue 1, yellow 1, green 1.014, red .992

Sink or Float: blue sink, yellow sink, green float, red float

hope this helps

Answer:

C 31500

Explanation:

1/2mv*2=KE

k.e= 350× (30)*2

=350×900

k.e= 31500

Answer:kinetic

Explanation:

Answer:

2 meters per second

Explanation:

Answer:

James Chadwick

Explanation:

James Chadwick discovered that the nucleus of each atom contains neutrons in 1932. Shortly after this, Eugene Wigner suggested that the electromagnetic force is not involved in holding the nucleus together and that there are two different nuclear forces. We now refer to these as the strong and weak nuclear forces.

Answer:

James Chadwick

Explanation:

i just searched it up lol

Answer:

20 mi

Explanation:

distance= rate* time

30 min*(1 hour)/ 60 min

.5 hours

(40 mi/hr)(.5 hr)

20 mi

Answer:

B. Mescaline

Explanation:

Answer:

Peyote contains a psychotropic drug called mescaline

or B

Explanation:

Answer:

4.5 m/s

Explanation:

[tex]s_x[/tex] = Horizontal displacement = 1.8 m

[tex]s_y[/tex] = Vertical displacement = 0.8 m

[tex]u_x[/tex] = Horizontal velocity

g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]

t = Time taken to fall down

[tex]s_y=u_yt+\dfrac{1}{2}gt^2\\\Rightarrow 0.8=0+\dfrac{1}{2}\times 9.8\times t^2\\\Rightarrow t=\sqrt{\dfrac{2\times 0.8}{9.8}}\\\Rightarrow t=0.4\ \text{s}[/tex]

[tex]s_x=u_xt+\dfrac{1}{2}a_xt^2\\\Rightarrow 1.8=u_x\times 0.4+0\\\Rightarrow u_x=\dfrac{1.8}{0.4}\\\Rightarrow u_x=4.5\ \text{m/s}[/tex]

The initial velocity of the marble is 4.5 m/s.

Answer:

D

Explanation: just trust me

Answer:

Somatic motor neurons originate in the central nervous system, project their axons to skeletal muscles (such as the muscles of the limbs, abdominal, and intercostal muscles), which are involved in locomotion.

Explanation:

Muscles move on commands from the brain. Single nerve cells in the spinal cord, called motor neurons, are the only way the brain connects to muscles. When a motor neuron inside the spinal cord fires, an impulse goes out from it to the muscles on a long, very thin extension of that single cell called an axon.

Answer:

the ball will fly faster, and longer distance, which means there is going to be less air resistnace friction acting upon the ball.

Explanation:

Answer:

A is a solid. C is a gas. In solid an liquid the particals are touching. In C, the particals have less affect on each other because they are so far apart.

Answer:

The resolution is when Jonathan finds a new friend in his neighbor after his other one moves away. (B).

Explanation:

Hope this helps

Answer:

d = 11.77 m

Explanation:

Given that,

A ball is droped off the side of a bridge after 1.55 seconds.

We need to find how far it has fallen.

It will fall under the action of gravity. It would mean that a = g = 9.8 m/s²

Let it is fallen at a distance d. d can be calculated using second equation of motion as follows :

[tex]d=ut+\dfrac{1}{2}at^2[/tex]

Put u = 0 and a = g

So,

[tex]d=\dfrac{1}{2}\times 9.8\times (1.55)^2\\\\d=11.77\ m[/tex]

Hence, it will fall at a distance of 11.77 m.

Answer:

-11.77!!!! DONNT FORGET NEGATIVE

Explanation:

Wave speed = 40 m/s

Explanation:

Wave speed = frequency x wavelength

Wave speed = 1000 * 0.04

Wave speed = 40 m/s

Answer:

no.

Explanation:

Answer:

(1) 2.25m/s^2

(2) 45.6m

Explanation:

(1) A car accelerates uniformly from 12m/s to 39m/s in 12 seconds

Therefore the average acceleration can be calculated as follows

a = 39-12/12

a = 27/12

a= 2.25m/s^2

(2) A butterfly is flying at 4m/s , it accelerates uniformly at 1.2 m/s for 6 seconds

u= 4

a= 1.2

t= 6

Therefore the distance can be calculated as follows

S= ut + 1/2at^2

= 4×6 + 1/2 × 1.2 × 6^2

= 24 + 1/2 × 1.2 × 36

= 24 + 1/2 × 43.2

= 24 + 21.6

S = 45.6m

Hence the butterfly travels at 45.6m

Answer:

The velocity of Alice (25 m/s) will be greater than that of Tom (0), when  they reach the lake below.

Explanation:

Given;

initial horizontal velocity of Tom is zero since he dropped straight down from the edge.

initial horizontal velocity of Alice is 25 m/s.

Their respective horizontal velocity when they jumped is the same as when they reach the lake below.

If we compare their velocities when they reach the lake, one will be greater than the other, if we neglect air resistance.

Thus, the velocity of Alice (25 m/s) will be greater than that of Tom (0), when  they reach the lake below.

Answer:  Temperature is also a condition that affects the speed of sound. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly. The speed of sound in room temperature air is 346 meters per second.

Explanation: so basically, yes!

Answer:

In Step 3, he should have multiplied 6.25 J per m2/s2 by 2 instead of dividing it by 2.

Explanation:

D. In Step 3, he should have multiplied 6.25 J per m2/s2 by 2 instead of dividing it by 2.

The energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

According to the question,

The object posses an kinetic energy,

Given Mass of an object = 400 J

Energy moving at a velocity= 8 m/s.

[tex]E_k =\frac{1}{2} mv^2\\\\=400J = \frac{1}{2} *m(8)^2\\\\\\=\frac{400J}{64m^2/s^2} = \frac{1}{2}*m\\ \\ =6.25 *2 = m\\\\=12.25 kg[/tex]

Hence,

In the step 3 ,he should have multiplied 6.25 J per m²/s² by 2 instead of dividing it by 2.

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