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Explanation:

Newton's second law:

F = ma

42 N = m (1.8 m/s²)

m = 23 kg

An object accelerating at 1.8 m/s² to which an unbalanced force of 42 Newtons has been applied, mass of object is  23 kg.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Given in the question  the mass of an object accelerating at 1.8 m/s² to which an unbalanced force of 42 Newtons has been applied is ,

Using Newton's second law force is given as

F = ma

42 N = m (1.8 m/s²)

m = 23 kg

An object accelerating at 1.8 m/s² to which an unbalanced force of 42 Newtons has been applied, mass of object is  23 kg.

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They can travel through matter and through space.

Electromagnetic radiation is one of the many ways that energy travels through space. The heat from a burning fire, the light from the sun, the X-rays used by your doctor, as well as the energy used to cook food in a microwave are all forms of electromagnetic radiation.

While these forms of energy might seem quite different from one another, they are related in that they all exhibit wavelike properties.

The electromagnetic spectrum is a taxonomy of electromagnetic waves that groups them according to their varied wavelengths and frequencies. 

Therefore, They can travel through matter and through space.

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Answer:

Hello your question is incomplete below is the missing piece

What is the magnitude of the boat’s resultant velocity? Round your answer to the nearest whole number.

answer :  25.73 m/s

Explanation:

Given

V1 = 15 miles/hour =  6.71 m/s [ 45° EN ]

V2 = 18 m/s [ 5° NE ]

Calculate  the resultant velocity

Vr = 6.71 m/s[45°] + 18m/s[5°].

Vr = ( 6.71 *Cos45° + 6.71 *sin45°) + ( 18 *Cos5° + 18*sin5° )

Vr = ( 4.74  + 4.74 i  )+  ( 17.93 + 1.57i) = 22.67 + 12.18i.

Therefore the magnitude

= [tex]\sqrt{22.67^2 + 12.18^2}[/tex] = 25.73 m/s

Answer:

Main Asteroid Belt: The majority of known asteroids orbit within the asteroid belt between Mars and Jupiter, generally with not very elongated orbits. The belt is estimated to contain between 1.1 and 1.9 million asteroids larger than 1 kilometer (0.6 mile) in diameter, and millions of smaller ones.

Explanation:

Hi!Most of these objects, called planetoids or asteroids meaning "star-like" orbit between Mars and Jupiter in a grouping known as the Main Asteroid Belt.

Answer:

option c is the right answer

Answer:

D, B, A, C

Explanation:

The more lines, the greater the charge.

Answer:

It would spin ifintely

Explanation:

Answer:

[tex]\boxed {\boxed {\sf a= -7 \ m/s^2}}[/tex]

Explanation:

Acceleration is the change in velocity over time.

[tex]a= \frac {v_f-v_i}{t}[/tex]

The object accelerates from 45 meters per second to 10 meters per second in 5 seconds. Therefore,

[tex]v_f=10 \ m/s \\v_i= 45 \ m/s \\t= 5 \ s[/tex]

Substitute the values into the formula.

[tex]a= \frac{ 10 \ m/s - 45 \ m/s}{5 \ s}[/tex]

Solve the numerator.

[tex]a= \frac { -35 \ m/s}{5 \ s}[/tex]

Divide.

[tex]a= -7 \ m/s/s[/tex]

[tex]a= -7 \ m/s^2[/tex]

The acceleration of the object is -7 meters per square second. The acceleration is negative because the object's velocity decreases and the object slows down.

Answer:

M= mv= 1400 x 18= 25200 kg x m/s

Answer: No , a chemical change has not occured as it was easily reversed.

Explanation:

Chemical change is defined as a change in which rearrangement of atoms take place and leads to formation of new substances. It can only be reversed with the help of a chemical reaction.

Physical change is defined as a change which leads to change in shape, size or state of the substance changes. No new substance is formed.It can be easily reversed.

As the hair colour was washed out and returned to its original brown colour, it was a physical change.

Answer:

f=force m=mass and a=acceleration

Answer:

When a metal element reacts with a non-metal element an ionic compound is formed. An understanding of the way the elements are bonded allows us to explain their typical properties.

Reactions between metals and non-metals include:

sodium + chlorine → sodium chloride

magnesium + oxygen → magnesium oxide

calcium + chlorine → calcium chloride

Explanation:

In all of these reactions, the metal atoms give electrons to the non-metal atoms. The metal atoms become positive ions and the non-metal atoms become negative ions.

A metal atom often stop reacting when it has lost all of its outer electrons.

Metal atoms often have few electrons in their outer shell.

Non-metal atoms does have plenty of electrons in their outer shell.

A Metal atoms lose the electron, or electrons, when in their highest energy level and tend to be positively charged ions.

Non-metal atoms often gain an electron, or electrons, so as to be negatively charged ions.

The loss or gain of valence electrons make ions to work with the octet rule and become more stable.

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Use physics kinematic equations to solve for t. Lookup physics kinematic problems on Kahn for more understanding.

Answer:

Velocity

Explanation:

In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain.

Answer:

it has both magnitude and direction.

Explanation:

Answer:

when u find out pls lmk! i have the same question and I've been stuck for a while lol

Answer:

lhf

Explanation:

.

Answer:

-1.69 m/s²

Explanation:

We are told the crane pulls up the mass with a force of 1150 N.

This means it is in an opposite direction to gravity and thus acceleration(a) is negative.

Now, the gravity is acting downwards, thus, total force is;

F = mg - ma

1150 = 100(9.81 - a)

Divide both sides by 100 to get;

11.5 = 9.81 - a

a = 9.81 - 11.5

a = -1.69 m/s²

Answer:

1/4

Explanation:

Mechanical Advantage = Load/Effort

Given

Effort applied = 24N

Load = 6N

Substitute

MA = 6/24

MA = 1/4

Hence the mechanical advantage is 1/4

Answer:

4

Explanation:

24n/6n=4

Answer:

understand

Explanation:

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Answer:

8.6 m/s

Explanation:

From the question,

applying law of conservation of momentum

Total momentum before collision = Total momentum after collsion

mu+m'u' = mv+m'v'....................... Equation 1

make v' the susbject of the equation

v' = (mu+m'u'-mv)/m'.................. Euqation 2

Where m = mass of the ball, m' = mass of the can, u = initial velocity of the ball, u' = initial velocity of the can, v = Final velocity of the ball, v' = final velocity of the can.

Given: m = 1.2 kg, m' = 0.7 kg, u = 14 m/s , u' = 0 m/s (at rest), v = 9 m/s.

Substitute these values into equation 2

v' = [(1.2×14)+(0.7×0)-(1.2×9)]/0.7

v' = (16.8-10.8)/0.7

v' = 6/0.7

v' = 8.6 m/s

Answer:

circle

Explanation:

because Earth is not oblong

Answers:

1) A process that occurs when an object or a particle moves, referred to as kinetic energy

2) A potential energy is a stored amount of energy that changes depending on the relative positions.

3) Potential Energy is the energy stored in an object due to its position. Kinetic Energy is the energy of motion in a moving object.

4)

  a) C and B

  b) A

  c) From B to A or from C to A

  d) From A to B or from A to C

[tex]\huge\mathfrak\green{answer}[/tex]

1) Kinetic energy of an object is the measure of the work an object can do by the virtue of its motion.

For Example : A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass.

2) Potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.

For Example : A child at the top of the slide

3) KINETIC ENERGY

POTENTIAL ENERGY

(make sure to draw a table and write them separately)

4)

a) C and B

b) A

c) B to A then C to A

d) A to B then A to C

(mark me brainliest please I need 1 more :))

[tex]\large\sf\green{thank \: you}[/tex]

Answer:

The answer is A conduction.

Explanation:

Answer:

hellowwwwwww njr perlo

Explanation:

Answer:

Kindly check explanation

Explanation:

Motion of an object could be explainwd as how a body changes position over time. Some of the proven facts about motion are stated by Sor Isaac Newton, named the Laws of motion :

1. A body will continue on it's state of rest or uniform motion in a straight line unless acted upon by a force to make it act otherwise.

2.) The second law explains that the force acting in an object is a product of the mass and acceleration.

Force = mass * acceleration due to gravity

3.) To every action, there is an equal and opposite reaction.

That is ; applied force in the positive direction on an object, yield an equal amount of force in the opposite direction.

Answer:

d

Explanation:

I really don't know how to explain