Does anyone know the answer to all of these questions

+10m/s²--25m/s

Explanation:

it's downward acceleration is +10ms-²

since it is falling freely under the influence of gravity

Since the elevator drops downward, that is initially from rest , u=0

so for this equation S=u + ½at²

but since u is 0 the new equation becomes S=½at²

thus from the new equation we determine the height attained after 2.5s during the fall

substituting 2.5s in the equation...

we get s to be 31.25m

then we substitute s in this equation when u=0 to get the velocity of the body

v²=u²+2as

v²=2as

v²=2(+10•31.25)

v²=625

v=25m/s

i suppose this will help

Answer:

I think it is protection

Answer:

I think it might be PROTECTION but i not sure for a fact

Sorry if i get it wrong ;]

Explanation:

Answer:

0.19 and 0.45

Explanation:

edge

The first and second velocities of the car are [tex]0.25/t_1[/tex] and [tex]0.50/t_2[/tex]respectively.

The velocity of an object is defined as the product of the distance travelled in a given direction and the time required to travel that distance. The velocity is expressed mathematically as,

v = d/t

Here, d represents the travelled distance.

And t is the typical amount of time needed to go the distance.

Given,

The value of the first distance is, d1 = 0.25 m.

The value of the second distance is, d2 = 0.50 m.

Then the first velocity of the car at 0.25 m is,

[tex]v_1 = d_1/t_1\\v_1 = 0.25 / t_1[/tex]

Thus,[tex]t_1[/tex] denotes the first distance's typical time.

The second velocity of the car with three washers at the 0. 50 m mark is

[tex]v_2 = d_2/t_2\\v_2 = 0.50 /t_2[/tex]

Here, [tex]t_2[/tex] stands for the second distance's typical time.

Thus, the first and second velocities of the car are [tex]0.25/t_1[/tex] and [tex]0.50/t_2[/tex]respectively.

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Answer: 40,000kg m/s option c)

Explanation:

Given data

m1= 2000kg

u1= 20m/s

m2= 1500kg

u2= 0m/s

v1= 10m/s

Required

The speed of the sticks

We know that from the expression for the conservation of momentum

m1u1+m2u2= m1v1+m2v2

2000*20+1500*0=2000*10+1500*v2

40000=20000+1500v2

collect like terms

40000-20000= 1500v2

20000= 1500v2

v2= 20000/1500

v2= 13.33 m/s

Hence the velocity of the sticks is 40,000kg m/s

I hope I helped!! ❤️

Answer:

The team's model is incorrect because they provide the same materials to build the same product.

Explanation:

The fundamental and the structural unit of the hereditary that codes for certain information and proteins required for signalling and cell functioning are called a gene.

The bridge model is correct.

Gene codes for various proteins required by the cell to function and regulate, a mutation or change in the sequence of the region will result in the modification of the proteins coded and hence the genotype and the phenotype will alter.

In the building model if a gene is mutated and the proteins get altered then the whole sequence and the information for which it is coding will modify.

Therefore, gene mutation will affect the proteins.

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Answer: acceleration is time derivative of speed.

When v(t) = 60 + 0.50t, is a(t) = v' (t) = 0.50 (m/s²)

Answer:

Choose/Pick your topic which is required for your target audience.  Do some research and collect the needed information for your selected topic.  Organize all important topic related facts & stats in a logical way.  Write all your reader’s needs to influence & help them.  Make your views unique & specific. Read, Revise, and Repeat.  Cross-check the grammatical mistakes & avoid unnecessary & repetitive lines

Hope this helps!!

Answer:

You have to choose a topic which you'd might like. And write about it. Make sure to provide lots of details and make your reasoning very strong to support your topic. Make sure to re-read and edit misinformation. Correct all grammatical errors and as such that do not make sense. Make sure to do great researching on the internet to provide lots of evidence for your chosen topic.

Answer:

The presumption of 'innocence of defendant'

Explanation:

Prosecution refers to the conduct of legal proceedings against defendant (accused), for a criminal behaviour.

Prosecution has the responsibility to overcome the presumption of innocence of defendant, proving the latter guilty - based on supporting evidences.

Answer:

The answer is "perpendicular and distance".

Explanation:

The Perpendicularity would be the connection of two lines that meet in such a right angle perpendicularity (90 degrees). It extends to all geometric objects involved.

The Distance was its cumulative motion of a body regardless of the direction that's why the value "d" is perpendicular to the distance from the transformer.

Answer:

it will decrease speed

Explanation:

Answer:

it's b

Explanation:

Answer:

Wavelength of light in  diamond λ2 = 179.75 nm (Approx.)

Explanation:

Given:

Blue light of wavelength λ1 = 435 nm

n2 in diamond = 2.42

Find:

Wavelength of light in  diamond λ2

Computation:

Since the wavelength is smaller, the frequency stays constant. The frequency of vibrations does not shift when they pass from one source to the next.

So,

n1λ1 = n2λ2

(1)(435) = (2.42)λ2

Wavelength of light in  diamond λ2 = 179.75 nm (Approx.)

Answer:

180

Explanation:

got it right on acellus

Answer:

B. 6

Explanation:

i think... im in 7th grade and haven't really leaned this but im like 60% sure but i migjt be wrong

Answer:

your answer is B 6 protons

Explanation:

since the atomic number for carbon is 6 it also represents the number of protons and electrons

Answer:

[tex]a=\dfrac{v-u}{t}[/tex]

Explanation:

The acceleration of an object is the rate of change of velocity. The mathematical expression for the acceleration of an object is given by :

[tex]a=\dfrac{v-u}{t}[/tex]

Where

v and u are final and initial velocities

t is time

or we can write acceleration as :

[tex]a=\dfrac{\Delta v}{\Delta t}[/tex]

Hence, this is the required solution.

Iron ( Fe ) is a micro element that is essential for the formation of haemoglobin.

Hemoglobin has two components-

Answer:

 m = 4.0

Explanation:

For this exercise in geometric optics we will use the equation of the constructor

         [tex]\frac{1}{f} = \frac{1}{p} + \frac{1}{q}[/tex]

where f is the focal length, p and q are the distance to the object and image, respectively.

In the exercise indicate the focal length f = 2.00 cm, the distance to the object p = 1.60 cm, let's find the distance to the image

         [tex]\frac{1}{q} = \frac{1}{f} - \frac{1}{p}[/tex]

let's calculate

         [tex]\frac{1}{q} = \frac{1}{2} - \frac{1}{1.6}[/tex]1 / q = ½ - 1 / 1.6

         [tex]\frac{1}{q}[/tex] = -0.125

         q = -8 cm

the magnification is

        m = - q / p

        m = 8/2

        m = 4.0

Answer:

PRESSURE is a force exerted by the substance per unit area on another substance.

The key difference between water pressure and air pressure is that one is made up of water and the other is made up of air. Both air pressure and water pressure are based on and follow the same physical principals.

Explanation:

Answer:

Explanation:

Quantum theory has taught us that virtually everything to do with the nature of matter in the universe is a random process. The decay of atomic nuclei is something that makes that randomness "visible" with appropriate instrumentation. As such, the rate of decay will vary over the "short" term. Consequently, it is not surprising to see a variation of a few counts in an activity measurement over a period of a few minutes.

__

Safety with respect to radioactive materials involves staying as far away from them as possible. The use of long tongs for handling would be appropriate.

Answer:

↔ for safety precautions the scientist should used this upon working with radioactive materials in a laboratory.

Explanation:

Frictional force causes a lot of losses in general upkeep and wear and tear of machinery. Hence it is considered as a evil. But almost all crucial tasks cannot be carried out without the presence of friction. ... Hence it is considered as a necessary evil .

Explanation:

Frictional force causes a lot of losses in general upkeep and wear and tear of machinery. Hence it is considered as a evil. But almost all crucial tasks cannot be carried out without the presence of friction. ... Hence it is considered as a necessary evil .

Answer:

1. d. a nucleus

2. b. Membrane-bound organelles

3. c. ten time smaller

4. b. animal cell

5. c. Bacteria

Explanation:

Hope this helps... :)

Answer:

A

Explanation:

I took the test

Answer:

10.6 s

Explanation:

Given that a girl is running the 200 m dash. She starts by acceleration at 8m/s^2 for 7s. Then continues at this speed until the end of the race. How long did it take for her to complete the race?

Solution.

If she accelerated for 7s, the velocity at which she accelerated will be:

Acceleration = velocity/time

8 = V/7

Make V the subject of the formula by cross multiplying.

V = 8 × 7

V = 56 m/s

She maintains the speed through out the journey.

Speed = distance/time

Make time the subject of formula

Time = distance/speed

Time = 200 / 56

Time = 3.57s

Therefore, she will complete the race by 7 + 3.6 = 10.6 s

The answer is A. Just did it.

Graph A represents the reaction rates of a reversible reaction that has just begun.

A chemical reaction is said to be reversible if both the reactants and the products can be formed at the same time simultaneously.

Here,

Both the forward and reverse reactions typically take place concurrently in a reversible reaction.

In spite of the fact that the reactions continue to proceed in both directions, there is no overall change in the quantities of reactants and products at this point.

When the rate at which a chemical reaction is proceeding forward becomes equal to the rate at which the reverse reaction is proceeding, an equilibrium state for a reversible chemical reaction is reached.

Hence,

Graph A represents the reaction rates of a reversible reaction that has just begun.

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Answer:

germ cleaning

and getting up cooking grease

Explanation:

Answer:

They do that by converting rotating mechanical energy into electrical power. Portable generators use an engine—typically running on gasoline, diesel, or propane, to turn an alternator which produces alternating electrical current or AC.

Answer:

hsnzbssj

Explanation:

Answer:

g=1.77π2xm/s2

Explanation:

T

=

2

π

√

l

g

∴

√

l

g

=

T

2

π

∴

l

g

=

T

2

4

π

2

∴

g

l

=

4

π

2

T

2

∴

g

=

4

π

2

l

T

2

g

=

4

π

2

×

1.00

1.50

2

=

1.77

π

2

x

m/s

2

Answer:All the forces are acting. The force due to which the car stops that is between road and tire is "friction".

Explanation: