please answer it fast and correctly​

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:

Answer:

Decease the mass

Increase the force applied

Explanation:

To increase the acceleration of the shopping cart, Brielle should reduce the load inside her cart.

According to Newton's second law of motion;

  Force  = mass x acceleration

Now, mass is indirectly proportional to the acceleration. The more the mass, the lower the acceleration a body will generate.

Lighter bodies moves with a faster acceleration.

In this case the force applied is constant.

If the force applied is also, increased the acceleration of the body will increase also.

Answer:

12%

Explanation:

number of students decreased=54

percentage of students decreased= 54/450 x 100

=12%

21 june is the date......hopi it will help

Answer:

June 22 North Pole tited to the sun, and its winter in the southern hemesphere

Explanation:

Answer:

C. Magnetic fields of atoms aligning

Answer:

c

Explanation:

a pex

Answer:

I think the answer is D

Explanation:

I dont have an explanation

Answer:

the size of something from one end to the other; how long something is

Answer:

Breaks because it doesn't have force in the radial direction and thus due to inertia the stones will fly off tangentially.

Explanation:

Until the stone is tied to a string, it will possess centripetal force and centrifugal force along the radial direction of motion due to the tension present in the string. Now, when the rope breaks, it breaks because it doesn't have force in the radial direction and thus due to inertia the stones will fly off tangentially.

Answer:

Aluminum foil is a physical change. A further explanation is given below.

Explanation:

Answer:

its b

Explanation:

Answer:

True

Explanation:

It is a true statement that "Patriotism and education are traditional American values."

The United States of America are bound together by certain core values that hold the entire country  together. These values are reverberated any time the ideals of the country are discussed.

Two of the key values of the American society are;

Hence, it is a true statement that "Patriotism and education are traditional American values."

Learn more about patriotism: https://brainly.com/question/779632

Answer:

Explanation:

The formula for KE is

[tex]KE=\frac{1}{2}mv^2[/tex] which makes solving our problem for velocity super easy. We will rewrite the formula in terms of v to get:

[tex]v=\sqrt{\frac{2KE}{m} }[/tex] and filling in:

[tex]v=\sqrt{\frac{2(50)}{25} }[/tex] so

v = 2 m/s to the correct number of sig fig's

Answer:

I think no B

if wrong correct me plsssssss

Mark me brainliest

have a nice day

I will always help you understanding your assingments

#Captainpower:)

Explanation:

The mass of a ball, m = 2 kg

It is traveling with a speed of 10 m/s

The ball's kinetic energy just as it leaves the boy's hand is calculated as follows :

[tex]K=\dfrac{1}{2}mv^2\\\\K=\dfrac{1}{2}\times 2\times (10)^2\\\\=100\ J[/tex]

The ball's kinetic energy just as it leaves the boy's hand is 100 J. The potential energy of the ball when it reaches the highest point is same as the kinetic energy as it leaves the boy's hand.

Hence, the required kinetic and potential energy is 100 J.

Answer:

6.67x10^-11 N-m^2/kg^2

Explanation:

Answer:

6.3 m/s

Explanation:

A student drops a wooden block from rest through a photogate 2 m below. Since there is a conservation of the gravitational potential energy and the kinetic energy, the final speed of the block is B. 6.3 m/s.

A wooden block is dropped from rest. If energy is conserved, the initial gravitational potential energy (U₁) will be equal to the final kinetic energy (K₂).

U₁ = K₂

m × g × h₁ = 1/2 × m × v₂²

where,

m × g × h₁ = 1/2 × m × v₂²

g × h₁ = 1/2 × v₂²

v₂ = √(2 × g × h₁)

v₂ = √(2 × (9.8 m/s²) × 2 m) = 6.3 m/s

A student drops a wooden block from rest through a photogate 2 m below. Since there is a conservation of the gravitational potential energy and the kinetic energy, the final speed of the block is B. 6.3 m/s.

Learn more about conservation of energy here: https://brainly.com/question/14525402

Answer:

Explanation:

When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation). ... When the pressure exerted on a substance increases, it can cause the substance to condense.

Answer:

Gases have the highest kinetic energy of any state of matter and thus occur at the highest temperatures. Increasing the temperature of a gas in an open system will not further change the state of matter because the gas molecules will only become infinitely further apart.

Answer:

-180 V

Explanation:

Given that,

No. of turns, N = 150

If the field increases uniformly from 0.00 T to 0.95 T and each coil of wire has an area of 1.4 m²

The coil will move perpendicular through a uniform magnetic field in 1.1 s.

We need to find the magnitude of the induced emf in the coil. The formula for the induced emf is given by :

[tex]\epsilon=\dfrac{-d\phi}{dt}\\\\=\dfrac{-d(BA)}{dt}\\\\=-A\dfrac{dB}{dt}[/tex]

Put all the values,

[tex]\epsilon=-NA\dfrac{dB}{dt}\\\\=-150\times 1.4\times \dfrac{0.95-0}{1.1}\\\\=-181.36\ V[/tex]

Out of four options, induced emf is (-180 V)

So, induced emf in the coil is (-180 V). Hence, the correct option is (c).

Hope this helps.......☺

Answer:

in my calculation the answer is letter a but in goo gle the answer is letter c

which one will you trust?

Explanation:

dont report me or i will report you

Answer:

Gravity (please mark me as the brainiest)

Explanation:

Gravity is a force caused by a large body, such as the Earth. Gravity pulls objects toward the Earth.

And give me a thanks, or vote

It will cost Sam "1.45 p. per hr" to use an 85W laptop and a 60W lamp. To understand the calculation, check below.

According to the question,

Electricity cost = 10 p per unit

Laptop power = 85 W

Lamp power = 60 W

We know the standard unit, KW/hr = 1000 W/hr

then,

= 85 + 60

= 145 W

By fractioning,

= [tex]\frac{145}{1000}[/tex]

= 0.145 KWH

hence,

The cost will be:

= 0.145 × 10 p

= 1.45 p. per hr

Thus the above approach is correct.

Find out more information about electricity here:

https://brainly.com/question/11517288

Answer:

[tex]\boxed {\boxed {\sf 6 \ meters \ per \ second}}[/tex]

Explanation:

Speed can be found by dividing the distance by the time.

[tex]s=\frac{d}{t}[/tex]

The distance is 18 meters and the time is 3 seconds.

[tex]d= 18 \ m \\t= 3 \ s\\[/tex]

Substitute the values into the formula.

[tex]s=\frac{18 \ m }{ 3 \ s }[/tex]

Divide.

[tex]s= 6 \ m/s[/tex]

The speed of the puck is 6 meters per second.

Answer:

Speed

As we know that

[tex] \sf Speed = \dfrac{Distance}{Time} [/tex]

[tex] \sf \: Speed = \dfrac{18}{3} [/tex]

Cancelling both by 3

[tex] \sf \: Speed = 6 \: mps[/tex]

Answer:

George Washington

Explanation:

Answer:

well for me

Explanation:

It was George Washington

Answer:

never scared

that might help you

Answer:

a. Vf = 39.24 [m/s]

b. Vf = 31.24 [m/s]

c. Vf = 47.24 [m/s]

Explanation:

To solve this problem we can use the following equation of kinematics. We have to keep in mind that the gravitational acceleration acts downwards, therefore when the rock falls towards the abyss it has the same direction of the acceleration and that is why the gravitational acceleration has a positive sign in the equation.

[tex]v_{f}=v_{o}+g*t[/tex]

where:

Vf = final velocity [m/s]

Vo = initial velocity = 0 (when the rock is dropped)

g = gravitational acceleration = 9.81 [m/s²]

t = time = 4 [s]

a.

[tex]v_{f}=0+9.81*4\\v_{f}= 39.24 [m/s][/tex]

b.

In this particular situation, the acceleration will be taken as negative because the gravity is pointing in the opposite direction of the movement of the rock.

[tex]v_{f}=8-(9.81*4)\\v_{f}=-31.24[m/s][/tex]

The negative sign in the answer tells us that the rock no longer moves up instead it does downwards when 4 seconds have passed.

c.

[tex]v_{f}=8+(9.81*4)\\v_{f}=47.24[m/s][/tex]

Explanation:

Antinodes are not the same thing as the amplitude , but they are very closely related. The amplitude is the distance from the rest position of the wave to the antinode . The antinode is just a point along the wave that has the greatest maximum velocity in the y-direction.

The amplitude of a standing wave doesn't remain the same throughout the wave. It keeps on changing as it is a function of x.

Where the amplitude is minimum is called?

The locations at which the absolute value of the amplitude is minimum are called nodes, and the locations where the absolute value of the amplitude is maximum are called antinodes.

Explanation:

Antinodes are not the same thing as the amplitude , but they are very closely related. The amplitude is the distance from the rest position of the wave to the antinode . The antinode is just a point along the wave that has the greatest maximum velocity in the y-direction .

intro urself please

Answer:

The velocity of the truck is 3.33 m/s

Explanation:

Law Of Conservation Of Linear Momentum

The total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and velocity v is  

P=mv.  

If we have a system of bodies, then the total momentum is the sum of the individual momentums:

[tex]P=m_1v_1+m_2v_2+...+m_nv_n[/tex]

If some collision occurs, the velocities change to v' and the final momentum is:

[tex]P'=m_1v'_1+m_2v'_2+...+m_nv'_n[/tex]

In a system of two masses:

[tex]m_1v_1+m_2v_2=m_1v'_1+m_2v'_2[/tex]

There are two objects: The m1=4000 Kg car and the m2=6000 Kg truck. The car was moving initially at v1=4 m/s and the truck was at rest v2=0. After the collision, the car moves at v1'=-1 m/s. We need to find the velocity of the truck v2'. Solving for v2':

[tex]\displaystyle v'_2=\frac{m_1v_1+m_2v_2-m_1v'_1}{m_2}[/tex]

Substituting:

[tex]\displaystyle v'_2=\frac{4000*4+6000*0-4000(-1)}{6000}[/tex]

[tex]\displaystyle v'_2=\frac{16000+4000}{6000}[/tex]

[tex]\displaystyle v'_2=3.33[/tex]

The velocity of the truck is 3.33 m/s

Answer:

The correct option is;

Elastic

Explanation:

In an elastic collision, the initial kinetic energy of the system is equal to the final kinetic energy of the system, such that there is no loss in the net kinetic energy available at a specific time or stage in the system

Therefore, we have;

1/2·m₁·v₁₁² + 1/2·m₂·v₂₁² = 1/2·m₂·v₁₂² + 1/2·m₂·v₂₂²

From which we get;

m₁·v₁₁ + m₂·v₂₁ = m₂·v₁₂ + m₂·v₂₂

Which is indicates that the initial and momentum of the system is also conserved

Therefore, in an elastic collision, both momentum and kinetic energy are conserved.

Answer:

P = 173.33 [W]

Explanation:

Power is defined as the amount of work done over a given time.

W = work = 520 [J]

t = time = 3 [s]

P = power [w]

Therefore by working relationship over time we can calculate the power.

[tex]P =W/t\\P = 520/3\\P=173.33[W][/tex]

Answer:

1. kinetic is when an object is moving and potential where the object is place

2. W and Y

3. X and Z