Plz di all plz i will give brainest and thanks to best answer do it right

Answer:

The resultant momentum is 12.97 kg.m/s. Choice: c

Explanation:

Momentum

The momentum is a vector that measures the quantity of motion that an object has. It's also known by the term "mass in motion".

As a vector, it can be expressed by its rectangular components:

[tex]\vec p = p_x\mathbf{i}+p_y\mathbf{j}[/tex]

The magnitude of the momentum is:

[tex]\mid \mid \vec p \mid \mid =\sqrt{p_x^2+p_y^2}[/tex]

The object described has an x-component of:

px=8.5 Kg.m/s

And a y-component of:

py=9.8 Kg.m/s

Thus, the magnitude of the momentum is:

[tex]\mid \mid \vec p \mid \mid =\sqrt{8.5^2+9.8^2}[/tex]

[tex]\mid \mid \vec p \mid \mid =\sqrt{72.25+96.04}[/tex]

[tex]\mid \mid \vec p \mid \mid =\sqrt{168.29}[/tex]

[tex]\mid \mid \vec p \mid \mid =12.97[/tex]

The resultant momentum is 12.97 kg.m/s. Choice: c

Answer:

Displacement = 4000 m

Explanation:

Given that,

Each lap is 1000 m.

David completes 4 laps of his complex

We need to find David's displacement. In n laps, the net displacement is n time of distance covered.

Displacement = 4 × 1000

= 4000 m

Hence, Davis's displacement is 4000 m.

Answer:

A : the colonists dumped tea in Boston Harbor

Answer:

Nuclear Energy is the energy released during nuclear fission or fusion, especially when used to generate electricity.

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Answer:

yes

Explanation:

A pendulum should be able to contain enough energy to constantly be moving

Answer:

100.49N

Explanation:

First we must know that the normal force acts in the vertical direction;

The force required to push to the right and left acts in the horizontal direction;

Sum of force along the horizontal Fx = 50N - 60 N = -10N

Force along the vertical Fy = 100N

The net force on the object is calculated as;

F = √(Fx)² + (Fy)²

F = √(-10)² + (100)²

F = √100 + 10000

F = √10,100

F = 100.49N

Hence the net force on the object is 100.49N

Answer:

second one

Explanation:

HOPE THIS helps

Answer:

1. Static friction = not moving

2.  sliding friction = moving

3. rolling friction = wheels

4. bumpy the surfaces are

5. how heavy the object is

6. it is easier to keep an object moving

7. static friction is GREATER than sliding friction

Explanation:

Answer:

D

Explanation:

Testing The PH Means Testing The acidity level of the water of which would be a chemical reaction

Answer:

C is the answer for the question

Answer:

reflection iim pretty sure

Explanation:

Answer:

k = 2

L = 8

M = 18

N = 32

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Answer:

150 N

Explanation:

Force is equal to mass times acceleration.  50 kg accelerating at a mass of 3m/3² is undergoing a force of 150 m/s², or 150 Newtons

Answer:

physics

Explanation:

physics needs to be steady whether you like it or not it helps you in life so everybody must study physics no matter is in Uganda USA and plenty more countries there must be physics to dare to be studied

Answer:

Explanation:

it also hleps us to became doctors becuase without physics you can't be a doctor

Answer:

Iron

Explanation:  It is by mass the most common element on Earth, right in front of oxygen, forming much of Earth's outer and inner core.

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 50 × 5

We have the final answer as

Hope this helps you

Answer: I believe the answer is A

Explanation: Because decomposers  break down chemicals and other things and make the soil for good plant growth

Ball 1 has the greatest amount of potential energy inside it because it has the maximum height among all the balls shown in the graph.

Potential energy is the stored energy which depends upon the relative position of various parts of a system. A spring has more potential energy when it is compressed or stretched due to external force.

Potential energy is not affected by the environment outside of the object or its system, such as the air or height. On the other hand, kinetic energy is the energy of an object or a system's particles in motion.

The potential energy of an object depends on the force acting on the two objects. For the gravitational force, the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity and h is the height in meters.

The object 1 has maximum height hence, it has greatest potential energy.

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Answer:

consistently working out and eating healthy i guess

Explanation:

Answer:

To have a strong body (not only visible muscles). Physically fit is to eat well also. Eat healthy more! Your body might not be packin, but it sure is strong!

Explanation:

Hope this Helps!

Have a great day!

:)

Answer:

Aaaaw noooo. :(

Explanation:

what did they say to u and what state do u live in. I will help u stand up to them. I have taken down many bullies before by using words. in fourth grade, my friend was getting bullied by the class, then yelled and stood up for her. they all fell silent and never bullied her, or any of my friends again. For whatever reason they bully u is probably d.u.m.b. which means they r really d.u.m.b. Also, U should try finding out a lot of personal info about them that they dont want anyone to know. also tell the principal. Is ur mom nice, or mean? if shes nice, she'll support u and fight for u, which means u should address

Answer:

You should stick up for yourself because if you don't then no one else will but im always here to talk to you if you need someone

Explanation:

It effects the balance of the plane, and slows it. Also you are likely moving faster than the bird, and it would be almost as if you are hitting a brick. However when it makes the plane impulse then it means the sudden loss of speed (even if it is a small bird) that is keeping the plane in the air causes the planes engines to struggle for a short amount of time, while it tries to recover the little amount of speed it has lost (the engines HAVE to regain full speed or the plane will turn to the ground, maybe not ALL the way but it still will lower the nose.

Hope this helps,

Miri

Answer:

10 players

Explanation:

Answer:

Electromagnetic waves.

Explanation:

Electromagnetic waves include microwaves, X-rays, gamma rays, and light waves, it carries energy and it can travel through matter or empty space.

Answer:

Electromagnetic waves or Light Waves

Explanation:

"Electromagnetic waves carry energy. The waves consist of transverse vibrations in electrical and magnetic fields, not vibrating particles. Electromagnetic waves do not need matter to travel through - they can travel through empty space (a vacuum)."

...Bored so lol

Answer:

The velocity of the boat and fisherman after he lands in the boat is 3.812m/s

Explanation:

We will solve this question on the general Derivation for general case of a man jumping n the boat

m = Mass of the man = 80kg

M= mass of the boat 37.5kg

V(m, g) = Velocity of man with respect to ground = 5.6m/s

V(b , g) = Velocity of boat with respect to ground = Vo = 0m/s ( rest)

velocity of the boat and fisherman after he lands in the boat = V1

As there is no external force acting on the man then we can apply conservation of the Linear Momentum.

m*V(m, g) + M*Vo = (M+m)V1

[tex]V1 = \frac{ m*V(m, g) + M*Vo}{M+m}[/tex]

 On substituting the values we get

V1 = [tex]\frac{80*5.6 + 37.5*0}{80+ 37.5}[/tex]

V1    = [tex]\frac{448}{117.5}[/tex] = 3.812 m/s

Therefore the velocity of the boat and fisherman after he lands in the boat is 3.812m/s.

Answer:

a change in velocity can be a change in magnitude (or speed), but it can also be a change in direction.

Answer:

Average speed 62.5 miles an hour.  If the train was traveling at a constant speed in a straight line it would be much faster on getting to its destination

Explanation:

Answer:

The answer is actually a. Cathode

Explanation:

Just took the quiz

In an electrolytic cell, the reduction occurs at the cathode. So, the correct option is a.

Reduction is defined as the process through which a reactant gain electrons during a chemical reaction.

Here,

An electrolytic cell is an equipment that uses electric current to drive a redox reaction.

Redox reactions are the type of reaction that involves the transfer of electrons between the reactants. That means, in redox reactions, both oxidation and reduction occurs. The reactant that gains the electrons is said to be reduced and the one that losses the electrons is said to be oxidized.

In an electrolytic cell, cathode is the positively charged electrode. So, electrons are attracted towards it, and as a result, the cathode gets reduced.

Hence,

In an electrolytic cell, the reduction occurs at the cathode.

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