please help asap!!!!

They feel they are, overall, bad people without any particular skills or value, when they are not.

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Physics is the area of science that compares and describes quantities and movements of matter and energy. The correct option is option 2.

Physics is the study of matter and energy in space and time, as well as their interactions. The interactions of particles and physical objects are governed by energy and the fundamental forces of nature. Science's study of matter, its motion through space and time, as well as related ideas like energy and force, is known as physics.

Therefore, the branch of science known as physics compares and describes the amounts and motions of matter and energy. The right choice is number two.

The complete question is given below:-

What area of science compares and describes quantities and movements of matter and energy?

1. earth science

2. physics

3. chemistry

4. biology

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The value of m = 1.6 and n = -19

When there are more or fewer protons in an atom than electrons, the substance has an electric charge. While electrons have a negative charge, protons have a positive charge. If a substance has more protons than electrons, it is positively charged; if it has more electrons, it is negatively charged.

The ability to conduct electricity is a characteristic of many fundamental, or subatomic, components of matter. As an illustration, protons and neutrons both have positive charges but electrons have a negative charge.

given:  [tex]q=0.000000000000000000160c[/tex]

Scientific notation of [tex]q= 1.6 X 10^{-19}[/tex]

now compare with the standard form [tex]m X 10^{n}[/tex]

we can say m = 1.6 and n = -19

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The metric unit of force is the newton (n) , which is kg⋅m/s2 . convert 10kg⋅cm/s2 to newtons is 1 x 10⁻¹.

The three fundamental laws of classical mechanics known as Newton's laws of motion. These laws can be stated as follows : Unless acted upon by a force, a body remains at rest or in motion in a straight path at a constant speed.

First law : Unless a force acts on an item, it will not modify its motion.

Second law : An object's force is determined by multiplying its mass by its acceleration.

The third law states that every action has a corresponding and opposing reaction.

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Answer:

compressions or refractions

Explanation:

Answer:

9

Explanation:

A atomic number is the addition of every number

Answer:

I think It's magna! Let me know if It's right.

The surface area to volume ratio declines with cell expansion. This is due to the fact that as a cell expands, its volume (internal contents) develops more quickly than its surface area (its cell membrane). Because the cell membrane needs to have enough surface area for the transfer of materials into and out of the cell, this is an issue for cells. The cell must go through mitotic cell division or cease to function if its volume grows to the point where not enough materials can be carried into and out of it. Cells are so tiny because of this.

A cell's surface area to volume ratio will decrease as its surface area will decrease keeping the volume constant. A cell with a smaller surface area to volume ratio has less plasma membrane and more volume.

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As a result, the rocket will soar to a maximum height of 0.5 km plus 510.2 m. One kilometre is equal to this. This becomes the beginning velocity for the second stage, and the acceleration in free fall is equal to -g.

0=1002−2×9.8×h

∴h=10,0002×9.8=510.2xm

As a result, although there is a constant force acting on the rocket, the resulting acceleration is not constant; rather, it is constantly rising. The amount of fuel burnt will thus have an impact on the rocket's overall change in velocity, and this dependency is nonlinear.

This indicates that the rocket's speed is increasing by 90 m/s every second. This is nine times the gravitational acceleration that is typical.

The space shuttle must accelerate from zero to 8,000 metres per second (almost 18,000 miles per hour) in eight and a half minutes in order to reach the minimum height needed to circle the Earth.

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Answer:

Explanation:

Answer:

5 seconds

Explanation:

sound travels 1 km in roughly 3 secs so 1 mile in roughly 5 secs.

When the body of mass m is projected at angle θ, the displacement is horizontal to the earth's surface, but the force of gravity is perpendicular to the motion of the body.

Therefore, the gravitational force on the body is zero.

Work done will also be zero due to zero gravitational force.

Displacement can be defined as the shortest distance covered by the object or it is the change in the position of the object.

Therefore the average power i.e. P = (Work/Time) of gravitational force over the whole time of flight is zero.

Option (d) zero

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Answer:

a = 2.44 m/s²

Explanation:

The Net force acting on the car downwards the plane will be equal to the component of the weight that is parallel to the plane.

Thus;

mg(sin θ) = ma

Thus;. g(sin θ) = a

g is acceleration due to gravity = 9.81 m/s²

θ = 14.4°

Thus;

9.81 × sin 14.4 = a

a = 2.44 m/s²

Answer:

2.44

Explanation:

If your on Acellus the correct answer is 2.44

Answer:

how heavy you are and how light you are

Explanation:

Answer:

a heavier mass

Explanation:

Answer:i think its D

Explanation:

The freezing Point of water is a physical property

The ability of oxygen to react with iron to cause rust is chemical property

Explanation:

Answer:

The impulse transferred to the nail is 0.01 kg*m/s.

Explanation:

The impulse (J) transferred to the nail can be found using the following equation:

[tex] J = \Delta p = p_{f} - p_{i} [/tex]

Where:                                                                

[tex]p_{f}[/tex]: is the final momentum

[tex]p_{i}[/tex]: is the initial momentum

The initial momentum is given by:

[tex] p_{i} = m_{1}v_{1_{i}} + m_{2}v_{2_{i}} [/tex]

Where 1 is for the hammer and 2 is for the nail.

Since the hammer is moving down (in the negative direction):

[tex]v_{1_{i}} = -10 m/s [/tex]

And because the nail is not moving:

[tex]v_{2_{i}}= 0[/tex]                      

[tex] p_{i} = m_{1}v_{1_{i}} = 0.25 kg*(-10 m/s) = -2.5 kg*m/s [/tex]

Now, the final momentum can be found taking into account that the hammer remains in contact with the nail during and after the blow:

[tex] p_{f} = m_{1}v_{1_{f}} + m_{2}v_{2_{f}} [/tex]

Since the hammer and the nail are moving in the negative direction:

[tex]v_{1_{f}}[/tex] = [tex]v_{2_{f}}[/tex] = -9.7 m/s

[tex] p_{f} = -9.7 m/s(7 \cdot 10^{-3} kg + 0.25 kg) = -2.49 kg*m/s [/tex]

Finally, the impulse is:

[tex] J = p_{f} - p_{i} = - 2.49 kg*m/s + 2.50 kg*m/s = 0.01 kg*m/s [/tex]

Therefore, the impulse transferred to the nail is 0.01 kg*m/s.

I hope it helps you!                                                                                                                                                                                                                                                                                                                                                                                                                    

The pressure in a liquid at a given depth is called the hydrostatic pressure. This can be calculated using the hydrostatic equation:

P = ρgh

P = (1000 kg/m³)(9.8 m/s²)(4 m)

Answer:

P = ρgh  

P = (1000 kg/m³)(9.8 m/s²)(4 m)

P = 39200 Pa

Explanation:

In the case of the water stored in a tank, the pressure at its bottom is the weight acting on a unit area of the surface where the tank is kept. To turn that into an equation: Pressure = weight/area, and weight = mass (m) * acceleration due to gravity (g). This means pressure = m * g/ area

She must have a balanced force to act on her.

Balanced forces are forces of opposite direction and equal magnitude. These are considered to be in equilibrium. When the forces are balanced, there is no change in direction.

Therefore, the window washer would like to have a balanced force so that she doesn't fall and will maintain her balance and her position will not change.

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The range of a cannonball launched with a speed of 35 m/s at an angle of 50 would be 119.1 meters.

The launching of a cannonball is a case of projectile motion.

The formula for the range(R) of a projectile is

R = 2 u² sin(θ) cos(θ)/g

Here,

u = initial speed with which the projectile is launched = 35 m/s

θ = Angle at which projectile is launched = 50°

R = 2 (35)² sin(50) cos(50)/ 9.8

R = 2 x 1225 x 0.76 x 0.64/9.8

R = 119.1 m

Thus, The range of a cannonball launched with a speed of 35 m/s at an angle of 50 would be 119.1 meters.

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Answer:

AC motor........A

Explanation:

Plato, an AC motor is much simpler than a DC motor.  As alternating current passes through the coil, it becomes magnetized.  Since the current is alternating, the north and south ends keep switching.

Answer:

magnetic

Explanation:

PLATO

A physical field called an electric field surrounds electrically charged particles and attracts or repels all other charged particles nearby. The physical field of a system of charged particles can also be referred to as the electric field.

In a uniform electric field E, a particle with electric charge q moves in a straight line. The speed of the particle is u.

The electric force exerted in the charge is qE.

The electric field and the velocity of the particle are both in the x direction.

Now,

The particle starts from rest i.e. x = 0 and t = 0.

We have the acceleration of the particle as:

a = (du/dt) = (qE/m) (( 1 - (u²/c²) )⁻³/²

Now,

du/ (( 1 - (u²/c²) )⁻³/² = (qE/m) t

Integrating the above equation with limits for x as 0 to u and for t as 0 to t.

We get,

u/(1 - (u²/c²))^{-1/2} = qEt/m

Therefore,

u = (qEct)/[√(m²c² + q²E²t²)]

For the position of the particle:

The position of the particle will be the integration of the speed of the particle in t = 0 to t = t.

Therefore,

x = ∫udt

x = qEc∫ tdt/(√(m²c² + q²E²t²) )

x = (c/qE) ( √(m²c² + q²E²t²) - mc)

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The energy transferred to the eardrum which was exposed to the sound for 1.00 min is [tex]3 \times 10^{-3} J[/tex]

Given:

Threshold of hearing intensity = I = [tex]1[/tex] × [tex]10^-12W/m^2[/tex]

Area of the ear drum = A = [tex]5[/tex] × [tex]10^5m^2[/tex]

Incident power = P = IA

                          = [tex](1* 10^-12W/m^2(5 * 10^5m^2) =[/tex][tex]5[/tex] ×[tex]10^-17W[/tex]

For threshold of pain  the intensity I = [tex]1.00W/m^2[/tex]

The incident power  at the threshold of pain

P  = [tex](5[/tex] × [tex]10^5m^2( 1.00W/m^2) =[/tex] [tex]5[/tex]× [tex]10^-5W[/tex]

b) Ear drum exposed to this sound  t = 1.00min

                                                              = 60s

Energy transferred to ear drum is  E = P × t

                                                             =  [tex]5 \times 10^{-5} \times 60[/tex]

                                                             = [tex]3 \times 10^{-3}\;J[/tex]

 Hence, [tex]3[/tex] ×[tex]10^-3 J[/tex] energy is transferred to the eardrum exposed to this sound for 1.00 min.

The capacity to perform work is known as energy in physics. Potential, kinetic, thermal, electrical, chemical, nuclear, and other types are all possible. As energy is transferred from one body to another, there is also heat and work. Energy is always categorized after it has been transferred based on its nature. As a result, heat transfer may result in thermal energy, whereas labor done may result in mechanical energy.

Motion is a common feature of all energy types. Whenever a body is in motion, for instance, it contains kinetic energy. Even while at rest, a tensioned object like a spring or bow has the ability to move; this is because of the configuration of the object, which carries potential energy. Nuclear energy is similar in that it has potential energy.

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Answer:

Magnetic repulsion Is evidernt.

Answer:

The magnetic field flows from the north pole of one magnet to the south pole of the other magnet.

Plato :)

The ability of people to grow personally is highlighted by the humanistic psychology viewpoint.

In opposition to psychoanalytic theory and behaviorism, the humanistic perspective gained popularity in the middle of the 20th century. It highlights how healthy people develop and a person's innate desire for self-actualization and creativity. The humanistic perspective seeks to understand a person as a complete rather than just via one particular component of their personality. It is a subfield of psychology that deals with the notion of being wholly original and distinctive. A school of thought or philosophy known as "psychological perspective" is one that would help someone comprehend someone else's conduct.

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Answer:

Neutralization reactions always produce water and a salt.

Explanation:

There are different types of chemical reactions that occurs. Two of them are neutralization and double-displacement reaction. Neutralization reaction is the reaction between an acid and a base to give an acid salt and water as products. For example:

2NaOH (base) + H2SO4 (acid) → Na2SO4 (salt) + 2H2O (water)

On the other hand, Double displacement reaction is the reaction that involves an ion exchange between the reactants to form new products. This ionic exchange occurs in such a way that two reactants form two new products. For example:

2NaCl + Ca(NO3)2 → CaCl2 + 2NaNO3

Therefore, the major difference between these two types of reactions is that: NEUTRALIZATION MUST ALWAYS PRODUCE WATER AND SALT AS PRODUCTS.

Answer:

I know that we can identify it

Explanation:

C. structure

Answer:

C

Explanation:

In order to know what organism is it, you must obeserve its structure, behavior, movement but the most important is structure.

The direction of magnetic field is towards east.

We have a wire having a mass per unit length carrying 2A current horizontally to the south.

We have to determine the direction of magnetic field intensity.

The mass per unit length is called Linear mass density of any linear body. It is denoted by λ. Mathematically -

λ = m/L

According to the question, we have -

Direct your thumb in the direction of the current which is horizontally towards south and curl the remaining fingers. Now, advance in the direction of the current, you will notice that the direction of magnetic field is eastwards.

Hence, the direction of magnetic field is towards east.

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The estimated error rate for spherical volume measurements is 0.694%.Percent error is the difference between the estimated value and the actual value compared to the actual value, expressed as a percentage. So the percent error is the relative error multiplied by 100.

To calculate the Percent error

Subtract the actual value from the estimated value

Divide the result from step 1 by the actual value

to get the total percentage Multiply the result by 100

Formula,

Error Rate = ((Estimated Number – Actual Number)/Actual Number) x 100

from the given data

V=(4/3)πr3

=337.53cm³    

so

((339.87-337.53)/337.53)x100

=0.694

So from the given data and substituting that data in the formula , the percentage error to estimate the measurement of the volume of the sphere is 0.694%.

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