what would be the mass of a rock falling from the sky if it hits the ground with a force of 147 N

Answer:

Explanation:

every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

The option that would not increase the power needed by the boy to move the block is "Increase the time of the block was slid".

Option D is the correct answer.

The power applied by the boy to push the block across the 10 m rough surface is the measure of the energy expended over a given time interval.

Mathematically, the power applied by the boy is given as;

P = E/t

where;

P = (F x d)/t

where;

According to Newton's second law of motion, the applied force is given as;

F = ma

P = (ma x d) / t

where;

From the formula above, the following will increase the power needed by the boy to move the block.

Learn more about power here: https://brainly.com/question/20137708

#SPJ1

Answer:

Explanation:

The gravitational force between the earth and another body is F = -GM_em/r^2 r where G = 6.67 times 10^-11 Nm^2/kg^2 is the gravitational constant, M_e = 5.97 times 10^24 kg is the mass of the earth, m is the mass of the other body, and r is the position vector of the second body with respect to the centre of the earth.

With the concept of Coulomb's Law, the net force acting on the 2μC charge is 2.06 × 10⁻² newton.

Coulomb's Law states that the force of attraction or repulsion exerted by a charged particle on another charged particle is given by,

F=kq₁q₂ / r²

Here q₁ and q₂ are the charges on the particles,

r is the separation between them

k is a constant known as Coulomb's constant, whose value is, k = 9 × 10⁹ N m²/C²

So here in the question, we have been given an equilateral triangle of side 2 meters with three-point charges at its vertices

q₁ = 1μC ,

q₂ = 2μC ,

q₃ = 3μC ,

r=2 m

From Coulomb's law,

F₂₁ = kq₁q₂/r²

F₂₁ = (9 × 10⁹ × 1 × 2 × 10⁻¹²) / 2²

F₂₁ =4.5 × 10⁻³ N

This is the force on charge q₂ because of q₁.

Similarly,

F₂₃ = kq₂q₃ / r²

F₂₃ = (9 × 10⁹ × 2 × 3 × 10⁻¹²) / 2²

F₂₃ = 18 × 10⁻³ N

Now, the resultant of the two forces will be,

F(net) = \(\sqrt{F_{21} ^2 + F_{23}^2 +2F_{21}F_{23}cos60}\)

On substituting all the values the net force will be

F(net) = 2.06 × 10⁻² N

To learn more about Coulomb's law visit:

https://brainly.com/question/506926

#SPJ4

Answer:Explanation:

Protons and neutrons have very similar mass, while electrons are far lighter, approximately 11800 times the mass. Protons are positively charged, neutrons have no electric charge, electrons are negatively charged. The size of the charges is the same, the sign is opposite.

Answer:

Power = 2 j/s

Explanation:

Power = Work / Time

= 20/10

= 2 j/s

Answer:

true

Explanation:

the explanation is we would have been roasted if they weren't to weak

Answer:

yellow

Explanation:

yellow

make me brain

Answer:

Toaster

Explanation:

A toaster draws electric current (electrical energy) from a wall outlet and converts these moving electric charges into heat (thermal energy) in the filaments that turn red hot to cook your toast. ... As electricity runs through the filaments in a space heater, the electrical energy is converted into heat (thermal energy).

Answer:

Im answering for free points sry

Explanation:

...

Despite the fact that the moon is slightly larger than Pluto, the two bodies are vastly different, and their unique characteristics make them both interesting objects of study for astronomers and space scientists.

Yes, the way things work on Earth's moon would be different from the way they work on Pluto, despite the fact that Earth's moon is slightly larger than Pluto's. This is because the characteristics of a celestial body depend on various factors such as its size, mass, density, and distance from the sun.

One major difference between the two is the gravitational force. The gravitational force on the moon is about one-sixth of that on Earth, while on Pluto, it is about one-fifteenth of that on Earth. This means that objects on the surface of the moon would weigh less than those on Pluto, and they would also fall more slowly.

Another significant difference is the surface conditions. The moon has a relatively smooth surface with little atmosphere and extreme temperature variations, while Pluto has a much more rugged terrain, a thin atmosphere, and a much colder surface with temperatures reaching -240°C.

To learn more about Pluto

https://brainly.com/question/13402868

#SPJ4

Answer:

Work is ability if application of energy.

Such as pushing a wheel barrow through a distance ( Newton's third law )

Work is the ability to do something.

“There is no centre of the universe! According to the standard theories of cosmology, the universe started with a "Big Bang" about 14 thousand million years ago and has been expanding ever since. Yet there is no centre to the expansion; it is the same everywhere”.

Answer:

There is no center of the universe.

Explanation:

According to scientists, the universe started with a "Big Bang" millions of years ago and has been expanding ever since.

Molecular Orbital Theory (MOT) is a key concept in understanding chemical bonding, and it explains the formation of bonds through the interaction of atomic orbitals. The essential feature of MOT responsible for bond formation is the concept of constructive and destructive interference between the overlapping atomic orbitals.

When two atoms approach each other, their atomic orbitals overlap and combine to form molecular orbitals. These molecular orbitals can be bonding or antibonding, depending on the nature of their interaction. Constructive interference occurs when the wave functions of the atomic orbitals combine in-phase, resulting in a lower energy molecular orbital with electron density concentrated between the nuclei. This increased electron density strengthens the electrostatic attraction between the positively charged nuclei and the negatively charged electrons, forming a stable chemical bond.

On the other hand, destructive interference occurs when the wave functions of the atomic orbitals combine out-of-phase, leading to the formation of a higher energy antibonding molecular orbital. In this case, electron density is reduced between the nuclei, creating a node that weakens the electrostatic attraction and destabilizes the bond. Electrons in antibonding orbitals can counteract the bonding effect of electrons in bonding orbitals.

Bond order, a measure of bond strength, is determined by the difference between the number of electrons in bonding and antibonding orbitals. A positive bond order signifies a stable bond, while a zero or negative bond order indicates that the bond is not formed or is weak.

In summary, the formation of molecular orbitals through constructive and destructive interference between atomic orbitals is the key feature of MOT responsible for bond formation. Bonding orbitals result in stable chemical bonds, while antibonding orbitals can weaken or prevent bonds from forming.

For more such questions on Molecular Orbital Theory.

https://brainly.com/question/30550903#

#SPJ11

Answer:

Sure...it can be

Explanation:

When a positively charged body is brought near the neutral body, the body is negatively charged through electrostatic induction.

• At contact, the negative charges of a body are attracted to the near end of that body hence neutralization.

• When the positively charged body is removed and the body is earthed, it remaims negatively charged.

\({}\)

Answer:

displacement = 43.5 km

Explanation:

displacement = velocity * time taken

Here speed is 87 km/hr, which is given in km per hour

So we need to change the given time to hours:

60 minutes = 1 hours

30 minutes = 0.5 hours

Then using the formula lets find displacement:

      displacement = velocity * time taken

      displacement = 87 km/hr * 0.5

      displacement = 43.5 km

Answer:

it can be present at birth

Answer:

I think it can happen sometimes but not all the time

Microwaves have a wavelength between 1millimeter to 1 meter

Microwave is a form of electromagnetic radiation with wavelengths ranging from about one millimeter to one meter. Microwaves have the longest wavelength among the electromagnetic wave. Since velocity of electromagnetic wave is 3×10⁸ and it's given as frequency×wavelength.

This shows that the higher the wavelength , the lower the frequency of an electromagnetic wave and vice versa.

Therefore microwaves have very low frequency compared to other wave in electromagnetic wave like x-ray and gamma ray.

learn more about microwaves from

https://brainly.com/question/1304742

#SPJ1

The correct answer is: Berries and leaves are fully grown.

An adaptation is a trait that helps an organism survive in its environment. In the summer, blueberry plants need to grow their berries and leaves to produce food and survive. Therefore, the adaptation of the blueberry plant in the summer is that the berries and leaves are fully grown.

\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)

♥️ \(\large{\textcolor{red}{\underline{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)

Answer:

179.02N/m

Explanation:

spring constant = force/extension

(12.8)/(0.0715)= 179.02N/m

Answer:

40° (nice and warm)

Explanation:

40° is very cold (below freezing)

Answer:

Explanation:

This causes the planet to move inward as its orbital energy decreases.

A single layer of sedimentary rock is known as a bed or stratum (plural: strata). Each bed contains rock of a single composition and texture and can clearly be distinguished from the beds or strata above and below. This layering of strata is unique to sedimentary rocks and occurs because of the way that sediments are deposited.

Answer:

There are 4

Explanation:

Answer:       false

Explanation: on edg

It is false that reviewing old tests and quizzes will not help you determine what will be on a test because teachers don’t like to give students hints about what could be on future tests.

A test review verifies whether or not the modifications made to the code, data, or documentation are accurate.

In other words, it is an evaluation of the degree to which the stated goals have been attained that has been done at a set period.

Exam analysis might provide insights that can help you become a more self-sufficient learner.

You can improve your performance the next time you are tested by revising your strategy after reviewing returned examinations to learn why you made mistakes.

Thus, the given statement is false.

For more details regarding test preparations, visit:

https://brainly.com/question/19671752

#SPJ6

Answer:

D. When a force makes an object move over a distance

Explanation:

Work is done when an object is moved by a force.

Step 2 Answer: Apes, in general, engage in greater suspensory arm-hanging than baboons. The most tense arm-hanging is between Siamang and an orangutan.

They reside in tight woodland/closed forest. Bonobo maintains the most bipedal posture. It dwells in a savanna/open forest setting. The most bipedal walking is done by baboons and chimps. They dwell in a savanna/open forest setting. Step 3's answer is: 5. Based on the trends observed above, it is impossible to say if the ape lineage was more likely than the other primates to become bipedal. According to the statistics, orangutans and siamangs participate in the most suspensory arm-hanging, whereas bonobos and baboons engage in the most bipedal standing and walking. It is impossible to draw any conclusions based on the patterns.

learn more about forest  here:

https://brainly.com/question/3530564

#SPJ4

The lost in kinetic energy after the collision is 55.45 J.

The kinetic energy lost after collision is calculated as follows;

Their final velocity after the collision is calculated as;

(80 + 30) v = 100 kgm/s

110v = 100

v = 100/110

v = 0.91 m/s

The sum of their initial velocity before and after collision;

K.Ei = 0.5 x (30)(2²) + 0.5 x (80)(1²)

K.Ei = 100 J

K.Ef = 0.5(30 + 80)(0.9²)

K.Ef = 44.55 J

ΔE = 100 J - 44.55 J

ΔE = 55.45 J

Learn  more about change in kinetic energy here: https://brainly.com/question/1932411

#SPJ1