I really dont know physics

Answer:

In a two particle system, the center of mass lies on the center of the line joining the two particles.

Answer:

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 15 × 2

We have the final answer as

Hope this helps you

Answer:

5.6*10^23. if 10^n is greater, that means its the larger value. hope dis helps

Explanation:

Answer:

A

Explanation:

Answer:

I don't know the answer I hope you find it tho good luck##

Answer:

b. Oceans moderate temperatures and climate.

Explanation:

i had this on my quiz and it was right =]

Answer:

what do you mean

Explanation:

Answer: Number 6 is Periods

Explanation:

Answer:

W = 1750 N

Explanation:

Given that,

A shopper in a supermarket pushes a cart with a force of 35 N directed parallel to the ground.

We need to find the work done by the shopper on the cart as the shopper moves along a 50.0 m length.

Let W is the work done. As the force is parallel to the ground, angle between force and distance is 0 degrees.

W = Fd

W = 35 N × 50 m

= 1750 N

So, the work done by the shopper on the cart is 1750 N.

Answer:

-0.056 is the deceleration

Answer:

The friction force is 4.9 N

[tex]a = 0.98\ m/s^2[/tex]

Explanation:

Friction Force

When an object is moving and encounters friction in the air or rough surfaces, it loses acceleration or speed because the friction force opposes motion.

The friction force when an object moves on a horizontal surface is calculated by:

[tex]Fr=\mu N[/tex]

Where [tex]\mu[/tex] is the coefficient of static or kinetics friction and N is the normal force.

If no forces other then the weight and the normal are acting upon the y-direction, then the weight and the normal are equal in magnitude:

N = W = m.g

Thus, the friction force is:

[tex]Fr=\mu W[/tex]

The object has a mass of m=5 Kg, calculate the weight:

W = 5 * 9.8 = 49 N

It encounters a friction force that slows it down. We are given the coefficient of friction μ = 0.1, thus the friction force is:

Fr=0.1 49 N = 4.9 N

The friction force is 4.9 N

Since the only force acting on the object is the friction force, thus the net force is F = 4.9 N, and the acceleration can be calculated by using the equation of Newton's second law:

F = m.a

Solving for a:

[tex]\displaystyle a = \frac{F}{m}[/tex]

[tex]\displaystyle a = \frac{4.9}{5}[/tex]

[tex]\mathbf{a = 0.98\ m/s^2}[/tex]

Answer:

The velocity of the second ball is approximately 2.588 m/s

The angle direction of the second ball is 75° counterclockwise from the horizontal

Explanation:

The initial velocity of the first billiard ball = 5 m/s

The initial velocity of the billiard ball the first billiard ball strikes = 0 m/s

The final velocity of the first billiard ball = 4.35 m/s

The final direction of motion of the first billiard ball = 30° below its original motion

For perfectly elastic collision, whereby the target is at rest initially, by conservation of momentum, we have;

m₁ × [tex]\underset{v_1}{\rightarrow}[/tex] = m₁·[tex]\underset{v'_1}{\rightarrow}[/tex] + m₂·[tex]\underset{v'_2}{\rightarrow}[/tex]

Which gives;

m₁ × 5·i = m₁·((√3)/2×5·i - 2.5·j) + m₂·[tex]\underset{v'_2}{\rightarrow}[/tex]

∴ m₂·[tex]\underset{v'_2}{\rightarrow}[/tex] = m₁ × 5·i - m₁·((√3)/2×5·i - 2.5·j)

m₂·[tex]\underset{v'_2}{\rightarrow}[/tex] = m₁ × 5·(1 - √3/2)·i + m₁·2.5·j = m₁ × 2.5·(2 - √3)·i + m₁·2.5·j

Therefore, given that the mass of both billiard balls are equal, we have, m₁ = m₂, which gives;

m₂·[tex]\underset{v'_2}{\rightarrow}[/tex] = m₁·[tex]\underset{v'_2}{\rightarrow}[/tex]  = m₁ × 2.5·(2 - √3)·i + m₁·2.5·j

∴ [tex]\underset{v'_2}{\rightarrow}[/tex] = 2.5·(2 - √3)·i + 2.5·j

The magnitude of the velocity of the second ball is [tex]\underset{v'_2}{\rightarrow}[/tex] = √((2.5·(2 - √3))² + 2.5²) ≈ 2.588 m/s

The direction of the second ball, θ = arctan(2.5/((2.5·(2 - √3))) = 75° counterclockwise from the horizontal.

Answer:

According to the 2010 U.S. Census, there are approximately 8 million people living in Virginia. This is 2.8 million less than 4 times the population of Nevada.

What is the population of Nevada?

The first step is to  on both sides.

The second step is to  on both sides.

The population of Nevada is  million.

Explanation:

Answer:

its due to less surface area of action

pressure is high

Answer: A

Explanation:

Answer:

the great plague

Explanation:

Answer:

10 grams

Explanation:

I took a test with this question earlier.

Answer:

To raise the mass to an altitude of 12,000 Km 2E joules are required.

Explanation:

Gravitational Potential Energy

It's the energy stored in an object because of its vertical position or height in a gravitational field.

It can be calculated with the equation:

U=m.g.h

Where:

m = mass of the object

h  = height with respect to a fixed reference

g  = acceleration of gravity, or [tex]9.8 m/s^2[/tex].

If a mass has a height h1, its potential energy is

[tex]U_1=m.g.h_1[/tex]

If a mass has a height h2, its potential energy is

[tex]U_2=m.g.h_2[/tex]

The ratio of both potential energies is:

[tex]\displaystyle \frac{U_2}{U_1}=\frac{m.g.h_2}{m.g.h_1}[/tex]

Simplifying:

[tex]\displaystyle \frac{U_2}{U_1}=\frac{h_2}{h_1}[/tex]

Solving for U2:

[tex]\displaystyle U_2=U_1.\frac{h_2}{h_1}[/tex]

Since U1=E:

[tex]\displaystyle U_2=E.\frac{12,000~Km}{6,000~Km}[/tex]

[tex]U_2 = 2E[/tex]

To raise the mass to an altitude of 12,000 Km 2E joules are required.

Answer:Fn

Explanation:

Answer:

current going into a junction in a circuit is EQUAL TO the current comming out of the junction.

Explanation:

Krichhoff's Current Law

Kirchhoff's current law (1st Law) states that current flowing into a node (or a junction) must be equal to current flowing out of it.

Answer:

Thermal Energy

Explanation:

I majored in Physics

When a snowball thrown at an ice cream truck at Valley Forge in January sticks to the side, the mechanical energy was  changed into thermal energy.

Energy cannot be created or destroyed, according to the rule of conservation of energy. However, it is capable of change from one form to another. An isolated system's total energy is constant regardless of the types of energy present.

The law of energy conservation is adhered to by all energy forms. The law of conservation of energy essentially says that all energy is conserved in closed systems, or systems that are isolated from their surroundings.

When a snowball thrown at an ice cream truck at Valley Forge in January, the mechanical energy was  changed into thermal energy and the edges of the ice melts and again due to temperature of the surrounding they freezes together and the snowball sticks to the side.

Learn more about energy here:

https://brainly.com/question/1932868

#SPJ6

Answer: 200 N

Hope this helps! :)

Answer:

x=38.56725658

Explanation:

Answer:

x=38.56725658

Explanation:

Answer:

The value is  [tex]v = 92.68 \ cm/s[/tex]

Explanation:

From the question we are told that

     The distance traveled is [tex]d = 190 \ cm = 1.9 \ m[/tex]

     The  time taken is  [tex]t = 4.10 \ s[/tex]

Generally from kinematic equation we have that

      [tex]s = ut + \frac{1}{2} at^2[/tex]

Here u is the initial velocity of the marble and the value is [tex]u = 0 \ m/s[/tex]

So

      [tex]1.90 = 0* t + \frac{1}{2} a (4.10 )^2[/tex]

=>   [tex]1.90 = 0* t + \frac{1}{2} a (4.10 )^2[/tex]

=>    [tex]a = 0.226 \ m/s^2[/tex]

Generally from kinematic equations we have that

     [tex]v = u + at[/tex]

=>   [tex]v = 0 +0.226 * 4.10[/tex]

=>   [tex]v =0.9268 \ m/s[/tex]

Converting to  cm/s

=>    [tex]v =0.9268 * 100[/tex]

=>    [tex]v = 92.68 \ cm/s[/tex]

Answer:

present

Explanation:

read doesn't change but write is in present tense

Answer:

does this have picture so I can solve

The mass is 12,000

144,000 divided by 12 = 12,000

Momentum = mass × velocity

Brainliest would be appreciated. :)

Answer: 10 has more potential energy because its longer

1 has less potential energy because its shorter

Explanation:

Potential energy directly depends on height of body as

[tex]\\ \sf\longmapsto P.E=mgh[/tex]

[tex]\\ \sf\longmapsto P\propto h[/tex]

Higher the height higher the potential energy

Object at height 10m has more potential energy.

Answer: A) True, you are correct

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Explanation:

Power in physics is defined as

power = (change in work)/(change in time)

which shows that power is basically the rate of work done. We can think of it like a speed of sorts.

------------

For example, if you apply 100 joules of work over 2 seconds, then,

power = (100 joules)/(2 seconds)

power = (100/2) joules per second

power = 50 watts

A watt is defined to be a joule per second, and it's often used to measure how much electricity is consumed, but it has broader uses in physics as well.