10. A person with a mass of 15 kg is walking uphill at a velocity of 2 m/s. What is the walker's momentum?

A. 15 kg-m/s
B. 30 kg-m/s
C. 10 kg-m/s
D. 13 kg-m/s

16. Two bouncy balls colliding with each other is an example of what type of collision?

A. Inelastic collision
B. Elastic collision
C. Parallel collision
D. Mass collision

20
Which of the following is considered to be a vector?

A. Temperature
B. Mass
C. Velocity
D. Time

Answer:

195 countries

Explanation:

There are only 195 countries within the whole world.

Answer: Tesla

Explanation:

Answer:

Tesla

Explanation:

Edge 2021

Answer:

c. Ptolemy

Explanation:

Ptolemy was the one to believe that other planets and celestial objects orbited around the earth

Hello There!

The answer to your question is C) Ptolemy

Claudius Ptolemy was famous for being a greek astronomer. He was the one who introduced the "Geocentric Theory"

Answer:

You didn't provide any answer choices so, I'll tell you the steps in the rock cycle.

1. weathering and erosion

2. transportation

3. deposition

4. compaction

5. cementation

Hope this helps!

Answer:

b then c

Explanation:

Water is a liquid, that is wet. Water is formed by 2 hydrogen atom and 1 oxygen atoms. Water can be a solid, aka ice, a liquid, aka H2O, and a gas, aka water vapor.

I hope that this is all the info you need, if you need more on water please commit my answer, and please mark me as brainiest answer.

Answer:

Can occur where there is little or no matter.

Explanation:

Radiation is mode of heat transfer that does not necessarily have to involve a medium. Radiation occurs fastest in a vacuum where it has a speed of c- the speed of light where heat energy is transferred in photons. The factors that affect  radiation include the distance between the producer of the heat and the  receiver and the temperature of the producing body.

Answer:

Can occur with little or no matter

Explanation:

Answer:

2.67 N/kg

Explanation:

We are given that an object that weighing 75 N is pulled on a horizontal surface by a horizontal pull of 50 N to the right with 30 N friction to the left.

We are to find the acceleration of the object.

Mass = 75/10 = 7.5 kg

Acceleration = Net Force / mass

Net force = Horizontal force - Frictional force = 50 - 30 = 20

Acceleration of the object = 20 / 7.5 = 2.67 N/kg

Answer:

[tex]2.61m/s^2[/tex]

Explanation:

We first of all find the net force F acting on the object. The frictional force [tex]F_f[/tex] and the pulling force [tex]F_p[/tex] act in opposite directions. Hence the net force is given as follows;

[tex]F=F_p-F_f...............(1)\\Given;\\F_p=50N\\F_f=30N\\Hence;\\F=50-30\\F=20N[/tex]

It is this net force that brings about the acceleration of the body. Recall that

[tex]F=ma..............(2)[/tex]

where m is the mass of the object and a is the acceleration.

The weight W of the object is given, hence we obtain its mass as follows;

[tex]W=mg..............(3)[/tex]

where g is acceleration due to gravity taken as [tex]9.8m/s^2[/tex].

Given;

W = 75N

[tex]75=m*9.8\\m=\frac{75}{9.8}\\m=7.65kg[/tex]

From equation (2), we have

[tex]a=\frac{F}{m}..................(4)[/tex]

Hence;

[tex]a=\frac{20}{7.65}\\a=2.61m/s^2[/tex]

Answer:

In Physics, the desire of an object to keep doing what it is doing is termed as Inertia.

Explanation:

Inertia is the quality of an object due to which it does nothing or remains unchanged.

According to Newton's first law of motion "An object at rest remains at rest or keeps moving in a straight line with uniform speed unless an external force is acted upon it."

This law is also known as the Law of Inertia.

In the eighteenth century Isaac Newton found out that when a beam of light from the Sun, passes trhough a prism is decomposed in many different colors. He named this phenomenom as dispersion of light.

This phenomenom occurs when a beam of white light (which is compound of many wavelengths or "colors") is refracted (the different rays of light are diverted depending on their wavelengths) in some medium, leaving their constituent colors separated.  

Therefore:

Answer:

it travels at a different refractive index.

Explanation:

for example when light travels into water, it slows down, causing it to continue to travel at a different or another angle or direction. hope this helped!

Refraction of light occurs due to the different refractive indices of the medium in which the light travels.

Explanation:

The medium through which the light travels have different refractive indices, because of which the light rays crosses the boundary of the refractive indices. They are shifted from the travelling line according to the refractive index of the medium and hence, refraction is seen.

For example, air is medium with less refractive index as compared to glass, and therefore the light ray when enters into glass, travels slow and refracted from the actual path towards the normal of the ray.

Answer:

3.09 cm /sec.

Explanation:

Speed = distance / time taken

= 186×220× 91.44 cm/sec

1×14×86400

= 3.09 cm /sec.

Note: 1 yard = 91.44 centimeters

And 1 day= 24×60×60= 86400 seconds.

The speed of the small turtle in centimeters per second is 3.1 cm/s.

The given parameters:

speed of the small turtle, v = 186 furlongs per fortnight

1 furlong = 220 yards

1 fortnight = 14 days

To find:

Find the equivalent yard in centimeter and equivalent seconds in a day:

Calculate the speed of the small turtle in centimeters per second:

[tex]v = 186 \ \frac{furlong}{fortnight} \times \frac{220 \ yards}{1 \ furlong} \times \frac{1 \ fortnight}{14 \ days} = 2922.857 \ \frac{yards}{day} \\\\In \ centimeter \ per \ second:\\\\v = 2922.857 \ \frac{yards}{day} \times \frac{91.44 \ cm}{1 \ yard} \times \frac{1 \ day}{86400 \ s} = 3.1 \ \frac{cm}{s}[/tex]

Thus, the speed of the small turtle in centimeters per second is 3.1 cm/s.

Learn more here: https://brainly.com/question/1832698

Answer:

A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested is the 'control'.

Explanation:

Control is the standard used for the comparison which helps to make sure that the results of a certain experiment are caused by the condition which is being tested.

In controlled experiments, only one variable is changed at a time while the other variable (controlled variable) is kept same in order to isolate the results.

1.1 A. An electric oven with a resistance of 201Ω and a voltage of 220V drwa a current of 1.1 A.

The easiest way to solve this problem is using the Ohm's Law I = V/R.

An electric oven has R = 201Ω, and a drop of voltage V = 220v, solve using I = V/R:

I = 220V / 201Ω

I = 1.09 A ≅ 1.1 A

Answer:

p = mv

m = p/v = 125000/22 = 5682 kg

Explanation:

Direct application of the momentum equation

p = mv

where,

p: momentum

m: mass

v: object velocity

steps:

-------

1) check for units consistency (  SI or Imperial)

2) separate the variable you are looking for.

3) DONE! :DD

Answer:

the answer is C. 5680 kg

Explanation:

on larry foe nem

To be honest, there's no sure way to answer that, because you haven't defined your terms and we can't be sure of what j or s might be.

Tell you what I'll do:. I'll assume definitions for j and s, and then I'll answer the question that I invented.

Assume that j stands for Joule, the unit of energy. And assume that s stands for 'second', the unit of time.

Then j/s is the rate of transferring energy or doing work.

Its unit is the Watt, equivalent to 1 Joule per second.

In your system of notation, it would be 'w' .

Answer:

Watts

Explanation:

Well let's analyse.

First we know Ohm's law of resistance that states:

[tex]R=\dfrac{U}{I}[/tex]

Where R is resistance, U is voltage and I is current.

If we express current we get:

[tex]I=\dfrac{U}{R}[/tex]

Because resistance cannot be equal to 0 (violation of mathematical law) the only thing that may cause current being zero is voltage.

Which means that as long as your voltage is bigger than 0V then there will be current (if we are talking about AC).

So to answer the question: Electric current is caused by voltage and regulated by resistance.

Hope this helps.

r3t40

Answer:

Bohr found experimental evidence for his atomic model by studying line spectra.

Answer:

Bohr found experimental evidence for his atomic model by studying line spectra.

Line Spectra is plural of a line spectrum and a line spectrum is an emission of light, sound, or other radiation, composed of a number of discrete frequencies or energies (a spectrum).

Answer:

b

Explanation:

Then the mass of the gas divided by the moles will give the molar mass. Now divide g by mol to get the molar mass. Since N has a molar mass of 14 g/mol and O has a molar mass of 16 g/mol, the formula N2O would produce the correct molar mass.

Final answer:

Chemical reactions involve the conversion of thermodynamic energy and kinetic energy. Thermodynamic energy changes determine if a reaction is exothermic or endothermic, while kinetic energy is needed to overcome activation energy. Potential energy stored in chemical bonds is often converted into other forms like mechanical kinetic energy.

Explanation:

Chemical reactions always involve changes in energy. There are two main types of energy relevant to reactions: thermodynamic energy and kinetic energy. Thermodynamic energy is related to the energy changes when reactants convert to products, which can be either released or absorbed. This type of energy change defines whether a reaction is exothermic or endothermic. Kinetic energy, on the other hand, is the energy that reacting molecules must possess to overcome the energy barrier to react and form products, known as the activation energy.

In the course of a reaction, chemical bonds break and new ones form. The energy stored in these bonds is a form of potential energy. When substances convert, there is a conversion of energy forms - for example, chemical potential energy can be converted to mechanical kinetic energy, such as in a car engine where the combustion of gasoline moves pistons.

Answer:

solids have definite shape and volume, liquids have definite volume, but no definite shape, gas has no definite shape or volume. I hope that this is what you was looking for.

Answer:

Solids

Gases

Liquids

Explanation:

Solids have the strongest inter-molecular forces in them, this causes them to have a definite shape and volume.

Gases have the weakest inter-molecular forces in them, this causes them not to have a definite volume or shape. Moreover gases are compressible which means with enough pressure the volume may change for the same number of particles.

Liquids have weaker inter-molecular forces than solids but stronger than gases, this causes them to have a definite volume, but indefinite shape.

Answer:

A sense of right and wrong.

Hi!

Let's go over the meaning of moral development before we answer.

the process thought which children develop proper attitudes and behaviors toward other people in society, based on social and cultural norms, rules, and laws.

What can we infer from this? Well, this passage tells us that moral development is a process thought.

Based on the definition, we can say that the answer would be:

A sense of right and wrong.

Does this make sense? Lmk if not!

Hope this helps!

- Melanie

Answer:

20 meters per second

Explanation:

If an object accelerates for 2 seconds, and accelerates by 10 meters per second, then that objects speed will be 20 meters per second, assuming hat there are no other factors involved.

Answer:

20 meters per second

Explanation:

All you have to do is multiply 10 meter by the speed of two seconds which is 20 METERS PER SECOND

PLEASE MARK BRAINLIEST KIND PERSON :)

~Luis~

In the DC circuit, the charge move in only one direction, Option D is correct.

Electric Current flows in only one direction in a Direct Current circuit. Many low-voltage applications use DC, particularly those that are battery-powered. A DC power supply is necessary for most electronic circuits.

In the DC circuit, the charge move in only one direction,

Hence, option D is correct.

To learn more about the DC circuit, refer to the link;

https://brainly.com/question/11851328

#SPJ2

Answer:

d = 10.076 m

Explanation:

We need to obtain the velocity of the ball in the y direction

Vy  = 24.5m/s * sin(35) = 14.053 m/s

To obtain the distance, we use the formula

vf^2 = v0^2 -2*g*d

but vf = 0

d = -vo^2/2g

d = (14.053)^2/2*(9.8) = 10.076 m

Answer:

10.076

Explanation:

Answer:- Potential energy is the amount of energy a object has while it's at rest (or not moving) Kinetic energy is how much energy a object is while it's  moving

Explanation:

I don't understand what you mean by "the following" or "which of", and there are no suggestions listed to pick from.

If any of the THESE things is on this list in the place where you copied the question from, then it's the answer.  If none of these is on the list, then you're on your own.

-- A bowling ball on the floor in the upstairs closet.

-- A car up on the rack having an oil-change.

-- A helicopter hovering 10-ft off the ground.

-- A mosquito hovering 10-ft off the ground.

-- A helium party balloon hovering 10-ft off the ground, with its string tied to a chair.

-- A regular party balloon full of regular air, with its string tied to a chair, and dangling down the back of the chair.

-- A regular party balloon full of regular air, tied to a hook in the ceiling, dangling down but not reaching the floor.

-- A gallon of gasoline, in the tank of your car, that has not burned yet.

-- A kitchen match, in the box, that has not burned yet.

-- A birthday candle, standing up in the middle of a rose on the cake, that has not been lit yet.

-- A stick of dynamite that has not been lit yet, lying on the ground.

-- A firecracker that has not been lit yet, lying on the ground.

-- A squirrel sitting up in the tree watching me walk by on the ground.

-- A bird sitting up in the top of the tree watching the squirrel.

-- A chewed up piece of roast beef that has not been digested yet, lying in your stomach.

-- A chewed up piece of roast beef that has not been digested yet, lying in MY stomach. (A more satisfying example)

-- A tree branch that broke off in the wind yesterday and is lying on the roof of your house.

-- The air that is right under the ceiling in your bedroom.

-- YOU, when you are fast asleep in the top bunk in your bedroom.

-- A rifle bullet that was fired straight up, reached the peak of its trajectory, and is just about to start falling downward in 0.001 second from now.

-- The rocket that was launched, went straight up for a while, ran out of fuel, continued to coast straight up for a while, reached the peak of its trajectory, and is just about to start falling downward in 0.001 second from now.

Answer:

centripetal force

Explanation:

When a person spins a bucket of water in a circle, the force acting on the bucket to keep the water inside is called centripetal force.

The centripetal force is a constant resultant force that acts on an object in circular motion.

Answer:

centripetal force

Explanation:

D. μk = 0.21. The coefficient of kinetic friction μk is 0.21.

The key to solve this problem is using the equation of kinetic friction force Fk = μk*n, where μk is the coefficient of kinetic friction, and N is the normal force n = m*g.

Clear μk from the equation Fk = μk*n:

μk = Fk/n

With Fk = 16.46N, and n = 8kg*9.8m/s²

μk = 16.46N/(8kg*9.8m/s²)

μk = 0.21

Answer: D: .21 on apex :)

Explanation:

-- A soccer ball eventually stops because its energy disappears. No. Energy does NOT "disappear".  That would exactly violate the whole concept of  energy conservation.

-- When a light bulb is turned on, electrical energy is converted to light and heat. Gosh Yes !  This statement tells where the energy comes from, what happens to it, and where it goes.  In a sloppy floppy way, it incorporates all of the highlights of energy conservation.

-- An automobile engine burns gasoline to converts its chemical energy to electrical energy. No.  When you look closely at this statement, MOST of the energy involved is missing and unaccounted for.  The statement only accounts for starting the motor and running the car radio.  It completely ignores the huge amount of mechanical energy produced from the gasoline.

Answer:

No

Yes

No

Explanation:

;0 literally just did it lol