what is the correct answer?

Answer:

A

Explanation:

4.12×1024atoms. i thinkdat helped

Answer: The ridge formed by the same process that pushed the continents apart.

Answer:

frequency

Explanation:

Answer:

D hope this helps plz mark brainliest

Explanation:

Answer: exercise doing something you like. for example if you like dancing incorporate dancing in your workouts so you will be more likely to do it regularly

Explanation:

Answer:

The maximum compression distance of the spring is 0.375 m

Explanation:

The given parameters are;

The weight of the elevator and the frog = 4,000.0 N

The location of the elevator above the spring = 5.00 m

The force constant of the spring, k = 8,000.0 N/m

The frictional force of the brakes = 1,000.0 N

The net force, F, of the elevator on the spring is F = 4,000.0 N - 1,000.0 N = 3,000.0 N

F = 3,000.0 N

The maximum compression distance of the spring, x is given as follows;

F = k × x

Substituting the known values gives;

3,000.0 N = 8,000.0 N/m × x

∴ x = (3,000.0 N)/(8,000.0 N/m) = 0.375 m

x = 0.375 m = 37.5 cm

The maximum compression distance of the spring, x = 0.375 m.

Answer:

Explanation:

The mass of the arrow can be found by using the formula

[tex]m = \frac{p}{v} \\ [/tex]

p is the momentum

v is the velocity

From the question we have

[tex]m = \frac{5.22}{48.3} \\ = 0.108074...[/tex]

We have the final answer as

Hope this helps you

Answer:

Humans

Explanation:

They are the only ones they drink cows milk and others

Answer:

human beings

Explanation:

human beings consume cow's milk , both HUMANS and COWS are mammals

Answer:

The spark from the primer ignites the gunpowder. Gas converted from the burning powder rapidly expands in the cartridge. The expanding gas forces the bullet out of the cartridge and down the barrel with great speed. The rifling in the barrel causes the bullet to spin as it travels out of the barrel.

Explanation:

Answer:

Explanation:

If dropped from a position of rest, the object will be traveling 9.8 m/s (approximately 10 m/s) at the end of the first second, 19.6 m/s (approximately 20 m/s) at the end of the second second, 29.4 m/s (approximately 30 m/s) at the end of the third second

Answer:

I think a black hole sucked up some other galaxies and spit them out there

Explanation:

Answer:

u look at em .<.

Explanation:

lol sorry im just bored

Answer:

6.98 × 10^(14) Hz

Explanation:

wavelength in air; λ_o = 430nm = 430 × 10^(-9) m

Speed of violet light in the prism; v = 2 × 10^(8) m/s

Speed of light in air = 3 × 10^(8) m/s

To get the frequency, we will use the relationship;

f = c/λ_o

Plugging in the relevant values;

f = (3 × 10^(8))/(430 × 10^(-9))

f = 6.98 × 10^(14) Hz

Answer:

See the explanation below.

Explanation:

Since the bus travels at a constant speed, we can use the following equation.

[tex]x=x_{o}+v*t[/tex]

where:

x = final position [m]

xo = initial position = 0 (if the bus starts from some reference point)

v = constant velocity [m/s]

t = time [s]

Let's take some data as an example and then graph them.

v = 2 [m/s]

t = 2 [s]

That is, after two seconds, the final position will be:

[tex]x = 0 + 2*2\\x = 4 [m][/tex]

After the two seconds, the bus stops for about 2 seconds more. Then the bus will go with a velocity of 4 [m/s] for two seconds more.

So the total time is 6 [s].

Let's draw the x-t graph.

And the final offset must be calculated using the same equation.

[tex]x = x_{0}+v*t\\x = 4+4*(6-4)\\x = 4 +8\\x = 12 [m][/tex]

weight will be maximum there

44.76

There are two options for formulas to use here, both work.

0=(m1)(V1f)+(m2)(V2f)

Or

(m1)(V1f)=—(m2)(V2f)

Both formulas should give you the answer of 44.763514, which can be rounded to the specifications of whatever you need it for.

Blessings in the Name of Jesus Christ our Lord!

Answer:

Three laws

Explanation:

Three laws of motion that Newtown developed.

Answer:

A. positive reinforcement

Explanation:

Assuming Adam dislikes veggies and likes ice cream...

Adam is being conditioned to eat his vegetables via positive reinforcement.

Punishment would be a negative result from eating him vegetables.

Negative reinforement is pretty much the same thing as punishment.

Extinction would mean he stopped getting what he wanted for the action he didn't like (eating veggies) and stopped doing it.

Answer:

17 * 10^5 J

Explanation:

From;

H= mcΘ

where;

m = mass of water = 5.0 Kg

c = heat capacity of water = 4 200 J/Kg °C

Θ = temperature rise = 100 °C - 20 °C = 80°C

Substituting values;

H = 5 * 4 200 * 80

H = 17 * 10^5 J

Answer:

white

An object has the color of the wavelengths it reflects. A material that reflects all wavelengths of visible light appears white. A material that absorbs all wavelengths of visible light appears black. A green lime absorbs most wavelengths but reflects green, so the lime looks green, as shown below.

Explanation:

hope that helps.

Answer:

denser media the speed is greater

Explanation:

The speed of sound is given by the relation

  [tex]v= \sqrt{\frac{B}{\rho} }[/tex]

where B is the volume modulus and ρ the density of the medium

When analyzing the previous expression, the amplitude of the sound depends on the energy carried by the wave.

Wave speed, is given by the relationship between two magnitudes, we analyze their values ​​for different media. The volume modulus for gases has values ​​of the order of 10⁵ Pa, for liquids of the order of 10⁹ Pa and for solids of 10¹⁰ to 10¹¹ Pa, while the density has values ​​of the order of 10⁻¹ to 10⁰ kg / m³ for gases for liquids 10³ kg / m³ and for solids of the order of 10³ to 10⁴ kg / m³

let's find the order of magnitude of the speed of sound

Gases

     v =√ 10⁵/10⁰ = 300 m / s

liquids

     v =√ 10⁹/10³ = 1000 m / s

solid

     v = √ 10¹¹/ 10⁴ = 3000 m / s

We can see that in denser media the speed is greater

Answer:

E=0.5 m v^2

2*10^-5 = 0.5 1000*v^2

4*10^-5=1000v^2

4*10^-8=v^2

2*10^-4 =v

Answer:

20m/s

Explanation:

Ek=1/2(m)(v)^2

Ek=2.0x10^5

m=1000kg

v=?

2.0x10^5=1/2(1000)v^2

(2.0x10^5)/(0.5x1000)=v^2

[tex]\sqrt{400}[/tex]=v

20m/s=v

Answer:

Im not sure and someone should double check me

Explanation:

The two pound ball because it's heavier and gravity would pull it down faster

If a 2 pound ball and a 1 pound ball were dropped from the same height at the same time, both of them will fall in same time due to acceleration of free fall is same for both of them.

Any motion of a body in which gravity is the only force acting on it is referred to as free fall in Newtonian physics. A body in free fall has no force acting on it according to general relativity, where gravitation is reduced to a space-time curvature.

An object may not necessarily be falling down in the traditional sense of the word while it is in a "free fall" in a technical sense.

As  acceleration of free fall is same for both of them, when a 2 pound ball and a 1 pound ball were dropped from the same height at the same time, both of them will fall in same time.

Learn more about free fall here:

https://brainly.com/question/29769460

#SP2

Answer:

Imp = 25 [kg*m/s]

v₂= 20 [m/s]

Explanation:

In order to solve these problems, we must use the principle of conservation of linear momentum or momentum.

1)

[tex](m_{1}*v_{1})+(F*t)=(m_{1}*v_{2})[/tex]

where:

m₁ = mass of the object = 5 [kg]

v₁ = initial velocity = 0 (initially at rest)

F = force = 5 [N]

t = time = 5 [s]

v₂ = velocity after the momentum [m/s]

[tex](5*0) +(5*5) = (m_{1}*v_{2}) = Imp\\Imp = 25 [kg*m/s][/tex]

2)

[tex](m_{1}*v_{1})+(F*t)=(m_{1}*v_{2})\\(0.075*0)+(30*0.05)=(0.075*v_{2})\\v_{2}=20 [m/s][/tex]

Force = F = 5N

time = t = 5 seconds

mass = m = 5 kg

momentum = p = ?

The force which acts for a very short period of time is called impulse force. It is given by,

                                      I = F x t

Where,

              I is impulse

              F is force

              t is time till which force is exerted

The impulse experienced by the object equals the change in momentum of the object. In equation form,

                                    F x t = M x ΔV

 So,

                     F x t = Final momentum - initial momentum

                     F x t = final momentum - (0)

initial momentum is zero because the object was initially at rest.

                     Final momentum = 5 x 5

                     Final momentum = 25 [tex]kgms^{-1}[/tex]

So B is the answer

Force = F = 30 N

time = t = 0.05 seconds

mass = m = 0.075 kg

V = ?

impulse force is given by,

                                      I = F x t

Where,

              I is impulse

              F is force

              t is time till which force is exerted

The impulse experienced by the object equals the change in momentum of the object. So,

                                    F x t = M x ΔV

 So,

                     F x t = Final momentum - initial momentum

                     F x t = final momentum - (0)

Since it was at rest initially, initial momentum is zero.

Momentum is given by,

                                p = m x V

where,

           p is momentum

           m is mass

           v is velocity

                 F x t = m x V

Rearrange the equation,

                                        V = [tex]\frac{Fxt}{m}[/tex]

                                        [tex]V = \frac{(30)x(0.05)}{0.075} \\\\V = 20 m/s[/tex]

So C is the answer

Answer:

[tex]E_{KE}=937,000 J[/tex]

Explanation:

the formula for Kinetic Energy is [tex]E_{KE}=\frac{1}{2}mv^2\\[/tex]

by plugging in the mass and velocity

[tex]E_{KE}=\frac{1}{2}*750*50^2[/tex]

[tex]E_{KE}=937,000[/tex]

Answer:

v = 18.84 m/s

Explanation:

Given that,

The length of the string, r = 1.5 m (it will act as radius)

The rubber stopper makes 120 complete circles every minute.

Since, 1 minute = 60 seconds

It means, its frequency is 2 circles every second.

Let we need to find the average speed of the rubber stopper. It can be calculated as follows :

[tex]v=\dfrac{d}{T}[/tex]

d is distance, [tex]d=2\pi r[/tex] and 1/T = f (frequency)

[tex]v=2\pi rf\\\\=2\pi \times 1.5\times 2\\\\=18.84\ m/s[/tex]

So, the average speed of the rubber stopper is 18.84 m/s.  

Answer:

It's D. The geothermal energy from Earth's core loses most of its heat before reaching the outer layer. The plates on the outer layer have been proven to be moving due to evidence such as earthquakes, volcanic eruptions, and tsunamis.

Explanation: