The laws of physics depend on your speed?True or False

Answers

Answer 1

False.

The laws of physics do not depend on your speed what can change is how we need to describe them, that is, if, for example, the frame from which we are describing the laws is accelerating then it is usually harder to explain the motion or phenomena happening but the laws of physics are not changing. Another example of this is when the speed is close to the speed light, on these situations we need to use relativistic equations to describe what is happening, the reason we don't do this when the speed is not comparable to the speed of light is because the relativistic effects are negligible but that does not mean that they are not there or that the laws are changing.


Related Questions

A certain star has an absolute magnitude of 1.0 and an apparent magnitude of 5.4. How far away is this star (in parsecs)?

Answers

The star whose absolute magnitude is 1.0 is 0.0128 pc away from the earth.

What is Star?

Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores.

Given is a certain star has an absolute magnitude of 1.0 and an apparent magnitude of 5.4.

We can write the relation absolute magnitude [M] and apparent magnitude [m] as follows -

M = m + 5(log₁₀p + 1)

Assume that the star is [x] light years away from earth. Then, we can write the above equation as -

M = m + 5[log₁₀ (x/3.2616)+ 1]

1 = 5.4 + 5[log₁₀x - log₁₀ 3.2616 + 1]

1 - 5.4 = 5[log₁₀x - 0.5134 + 1]

- 4.4 = 5[log₁₀x + 0.4866]

- 4.4 = 5log₁₀x + 2.433

- 4.4 - 2.433 = 5log₁₀x

- 1.37 = log₁₀x

x = 0.042 light years

Now, in 1 pc there are 3.2616 light years.

In 1 light year there will be (1/3.2616) pc

So, in 0.042 light years there will be (1/3.2616 x 0.042) = 0.0128 pc

Therefore, the star whose absolute magnitude is 1.0 is 0.0128 pc away from the earth.

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A motor is used to convert:A. electrical energy to gravitational energy.B. electrical energy to mechanical energy.C. nuclear energy to chemical energy.D. mechanical energy to chemical energy

Answers

An electric motor is used to convert electrical energy to mechanical energy; therefore, the answer is B.

Lesson 6 Atoms
Write a descriptive essay about radioactive decay.
Include the following essential content points:
*ideas about what causes radioactive decay
*the rate at which radioactive decay occurs

Answers

Radioactive decay is the emission of power inside the shape of ionizing radiation.

Ionizing radiation can have an effect on the atoms in dwelling things, so it poses a health danger by using negative tissue and DNA in genes.. The ionizing radiation that is emitted can consist of alpha debris.

In alpha decay, the nucleus loses two protons. In beta decay, the nucleus either loses a proton or gains a proton. In gamma decay, no alternate in proton quantity takes place, so the atom does no longer end up a specific element.

Radioactivity is the term used to explain the natural procedure via which some atoms spontaneously collapse, emitting both particles and power as they remodel into exclusive, greater solid atoms. This technique, also called radioactive decay, occurs due to the fact unstable isotopes have a tendency to transform into a more stable country.

Radioactive decay is very critical for a wide range of human sports, from medicinal drug to power production and past, and also to astronomers. The simplest manner that this will happen is by way of converting the range of protons in the nucleus.

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A 2.5 kg ball moving at 4.2m/s collided with a 2.5 kg stationary ball. If the first ball is at rest after the collision what is the velocity of the second ball

Answers

We need to apply the conservation of momentum formula

[tex]m1u1+m2u2=m1v1+m2v2[/tex]

Where m1 and m2 are the masses, u1 and u2 are the initial velocities of each mass, and v1 and v2 are the final velocities of each mass

we have

m1= 2.5 kg

u1= 4.2 m/s

m2=2.5 kg

u2= 0 m/s

v1=0 m/s

v2=?

we substitute

[tex]2.5(4.2)+2.5(0)=2.5(0_{})+2.5(v_2)[/tex]

therefore

[tex]v2=4.2\text{ m/s}[/tex]

ANSWER

v2=4.2 m/s

Someone stands at the edge of a cliff 15 m high. He drops a ball. How fast is the ball moving at the foot of the cliff, just before it hits the ground?

Now the person throws the ball at an angle of 43.6978° to the horizontal, at 5.0 m/s. The ball lands at the foot of the cliff after it moves in a parabolic path. How fast is the ball moving when it hits the ground at the foot of the cliff?

Answers

The final velocity of the ball when it falls from the 15 m high cliff is 17.15 m/s.

The final velocity of the ball when it is projected at an initial velocity of 5 m/s at 43.6978° to the horizontal is 17.5 m/s.

What is the final velocity of the ball?

The final velocity of the ball when it falls from the 15 m high cliff is calculated as follows;

v² = u² + 2gh

where;

v is the final velocityu is the initial velocity = 0g is the acceleration due to gravityh is height of fall

v² = 0² + 2gh

v² = 2gh

v = √2gh

v = √(2 x 9.8 x 15)

v = 17.15 m/s

The final velocity of the ball when it is projected at an initial velocity of 5 m/s at 43.6978° to the horizontal.

v² = (5 sin43.6978)² + 2(9.8)(15)

v² =  305.93

v = √305.93

v = 17.5 m/s

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Which effect does a magnetic field have on a moving charge?

Answers

The charged particle will experience a force whose magnitude will be q(V×B).

When a particle of charge q with a constant velocity V is moving inside a magnetic field B.

A force is applied by the magnetic field on the charge.

This force F is given by,

F = q(V×B)

F = qVBsinA

Where, A is the angle between the magnetic field and velocity of the charges particle.

If the charge enters perpendicular to the field, then the force is applied on the charge in such a way that the path of charged particle formed spiral path.

The direction of the force on the particle is given by Fleming's left hand rule.

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Lesson 9 Intro . to Motion
Write a compare and contrast essay addressing these essential content points.
*Compare and contrast speed, velocity, and acceleration.
*List the SI units for speed, velocity, and acceleration.

Answers

Speed is the total distance covered by a given time or rate of change of distance per unit time is called speed. It is scalar quantity and its S.I. unit is m/s.

Velocity is the displacement  covered in a given time or rate of change of displacement per unit time is called velocity. It is vector quantity and its S.I. unit is m/s.

Acceleration is the rate of change of velocity per unit time. It is vector quantity and its S.I. unit is m/[tex]s^{2}[/tex].

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Scientific laws tell us what we can expect under certain circumstances, but what do they fail to explain?
OA. when
OB. why
OC. where
O D.
how

Answers

B. Why
Because they don’t know why

What is the best example of potential energy?water flowing in a rivera puddle of water on the floora block of frozen ice on the groundwater in an artificial lake held behind a dam

Answers

Answer:

Water in an artificial lake held behind a dam

Explanation:

Potential energy is energy that can be converted to kinetic energy, for example, an object at a certain height has potential energy because we can drop the object to have kinetic energy.

Therefore, the best example of potential energy is water in an artificial lake held behind a dam because without the dam, the water will start to move and it becomes the energy into kinetic energy.

Describe the fit* formula for moderate physical activities

Answers

Fit formula for moderate physical activities is Frequency , intensity , time and type exercise.

The FIT formula of achieving healthy lifestyle is frequency , intensity type and time exercise. It is a flexible exercise framework for achieving health and well being.

Frequency is how often you exercise . Intensity is how hard you are working . Type is a type of exercise you are doing and Time is how long you exercise .F = 5 or more days per week . I = equal to brisk walk. T = at least 30 to 60 mins.

Thus, FIT formula for moderate physical activities is Frequency , intensity , type and time exercise.

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When interplanetary space travel becomes viable, doctors may suggest to people with arthritis that they vacation on a planet with lower gravitational
attraction and do more walking.
The gravitational acceleration on Earth is 9.8 m/s², while the gravitational acceleration on Mars is 3.7 m/s². How much less force would the
vacationer be applying to their joints when walking on Mars?

Answers

Answer: 2.6 times less force

Explanation: I did the assignment <3

Answer:

Gravitational Force, Attraction, and Mass Quick

Explanation:

1)the mass of the object and the planet’s gravitational acceleration

2)2.6 times less force

3)The Earth has a greater gravitational attraction than the Moon.

4)980 N

5)The force would need to be greater, so they would not perform as well.

I did it and have a 5/5 100%

A 8.43-Newton force was applied for an unknown displacement; however, it is known that 376 joules of work was done. What is the value of the
mystery displacement? (1 point)
O 384 m
O 368 m
O 44.6 m
O 3170 m

Answers

According to the given statement the value of the mystery displacement is 44.6 m.

The correct option is C.

How does displacement work?

The smallest (straight line) distance between a body's initial location and its final position—represented by an arrow pointing from the starting position to the final position—is referred to as a body's displacement when it moves from one position to another. It is a vector quantity.

What is an example of a displacement?

For instance, an object's position changes if it moves from position A to position B. The term used to describe this change in an object's position is displacement.

Briefing:

F = 8.43 N

Work = 376 J

Work = force × displacement

376 J = 8.43 N × d

d = 44.6 m

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The complete question is -

A 8.43-Newton force was applied for an unknown displacement; however, it is known that 376 joules of work was done. What is the value of the mystery displacement? (1 point)

A. 384 m

B. 368 m

C. 44.6 m

D. 3170 m

Answer:

44.6 m

Explanation:

What happens when a magnet is moved back and forth inside a wire coil?A.Electric charges begin flowing through the wire.B.The magnetic force decreases.C.Electric charges begin flowing through the magnet.D.The magnetic force increases.

Answers

According to electromagnetic induction, a change in the magnetic field induces a current in the circuit.

Thus, electric charges begin flowing through the wire when the magnet is moved back and forth inside a wire coil.

A leaf on a tree is what level of organization?

Answers

one of the organs of a plant system.

A boat (with a flat bottom) and its cargo weigh 5,200 N. The area of the boat's bottom is 3 m2. How far below the surface of the water is the boat's bottom when it is floating in water?

Please Help!!!

Answers

The bottom of the boat is 17.3 centimeters below the surface of water when it is floating in the water.

According to Archimedes' principle,

The upward force applied on the body floating in the liquid s equal to the mass of the liquid displaced by the body.

This upward force is called Buoyancy,

The buoyancy B is given by,

B = Volume displaced x density of liquid x Gravity.

Here,

B = weight W of the boat because the boat is floating on the surface,

Volume of the water displaced = volume of the boat submerged

Volume V of boat submerged = base area A of boat x height H till it is submerged

So, now we can write,

B = W

B = AHDg

W = AHDg

Value of g is 10 m/s²,

D is the density of water i.e. 10³ kg/m³

W = 5200 N

Putting all the values,

5200 = 10³x3xHx10

H = 0.173 meters

So, the boat is 17.3 cm below the water surface.

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Where must an object be placed if the image formed by a concave mirror is to be one-fourth as far from the mirror as the object?

Answers

  The reflective surface of a concave mirror is curled inward and away from the light source. Light is reflected inward to a single focal point via concave mirrors. Contrary to convex mirrors, concave mirrors provide a variety of images based on the object's distance from the mirror.

Examples of concave mirrors

  The mirror formula is 1/v+1/u=1/f, where u, v, and f are, respectively, the distances between the object and the mirror, the distance between the object and its reflection, and the focal length of the mirror.

M= - v/u

   Additionally, M=height of the image/height of the object is the magnification.

  According to sign convention, for a true picture in a concave mirror, u, v, and f are all negative. Additionally, an erect image's height is positive, but an inverted image's height is negative.

1 / v + 1 /u = 1 / f → 1 /v = 1 / f − 1 / u = u−f /uf.

v=uf / u−f →  M = −v/u =  f/f−u.

   It is assumed that the image's height is one-fourth of the object's height. Additionally, the picture would only be half as tall as the object if it were shifted 5 cm in the direction of the mirror.

f /f−u = −1/4  and   f / f−(u+5)= −1/2,

   Because the positive indication of movement toward the mirror from the side of the object.

4f = − f +u  and  2f = −f+u+5.

5f=u  and 3f=u+5.

3f=5f+5  →  f = −5/2=−2.5  cm.

The lens has a 2.5 cm focal length. Given that the mirror is concave, the indication is negative.

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If a light ray strikes a flat mirror at an angle of 27° from the normal, the reflected ray will be63° from the normal.27° from the mirror’s surface.27° from the normal.90° from the mirror’s surface.

Answers

We will have the following:

We know by the laws of reflection that the reflection will be equal to the angle of incidence. Thus, the reflected ray will be 27° from the normal.

The meter bridge shown in the figure is balanced when the slide wire is divided as shown in the figure. Find the value of the resistance X

Answers

A meter bridge shown in fig.is balanced.what is the value of resistance X.

A positive charge of 0.00017 C is 13 m from a negative charge of 0.00024 C. What is the force of one of the charges due to the other charge in units of
Newtons?
Round your answer to 5 decimal place.

Answers

The Coulomb's inverse-square law, sometimes known as Coulomb's law, is an experimental physical principle that measures the force exerted between two electrically charged particles that are stationary. Common names for the electric force between two charged objects at rest include electrostatic force and Coulomb force.

Coulomb's Law states that F = kQ1Q2 / r2 represents the force between charges Q1 and Q2 separated by a distance r. If the indicators of charge are in opposition to one another, F is enticing, and if they are in agreement, F is repulsive.

The resultant force between the two charges is denoted by "F." "r" is the separation between the two charges. You only need to be aware that the "r" stands for "radius of separation" because it is merely a distance. The values of "q1" and "q2" represent the charges that each of the particles has.

F = kQ1Q2/d2

F = -(9 x 109 Nm²/C²)(0.00017 C)(0.00024 C) / (13 m)²

  = - 3.07883e^(-6) N

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Question 4
When the results of an experiment support your hypothesis, this means that your
hypothesis has been proven to be true.
True
False

Answers

When the results of an experiment support your hypothesis, this means that your hypothesis has been proven to be true. the statement is True.

What is hypothesis?

A hypothesis is a proposed explanation of a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that it can be tested. Scientists usually base scientific hypotheses on past observations that cannot be satisfactorily  explained by existing scientific theories.

The characteristics of a hypothesis are as follows:

A hypothesis must be clear and precise to  be considered reliable. If the hypothesis is a relational hypothesis,  it should express the relationship between the variables. The hypothesis must be specific and  have room for  more tests. The  explanation of the hypothesis must be very simple, and it must also be understood that the simplicity of the hypothesis is not related to its meaning.

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four rivers have the same volume of water flow over time but fall from the different heights to power hydroelectric dams. which dam would provide most hydroelectric power?

A. dam c: fall height of 135 feet
B. dam B: fall height of 75 feet
C. dam A: fall height of 175 feet
D. dam D: fall height of 100 feet

Answers

Answer:

I thibknits 175

Explanation: It's the furthest

A block of mass =1.25 kg slides along a horizontal table with speed 0=8.00 m/s. At =0, it hits a spring with spring constant =80.00 N/m, and it also begins to experience a friction force.

The coefficient of friction is given by =0.100. How far has the spring compressed by the time the block first momentarily comes to rest?

Answers

The distance travelled by the spring compressed by the time the block first momentarily comes to rest is equal to 0.96 meters.

what is work energy theorem?

work energy theorem is an important phenomenon in physics which states that the change in kinetic energy is equal to the work done by the object.

This law is basic part of conservation of energy.

what is newtons law of motion?

Newton's laws of motion are three basic laws of classical mechanics that describe the relationship between the motion of an object and the forces acting on it. These laws can be paraphrased as follows: A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force.

given:

mass of the block = 1.25 kg

speed of the block = 8.0 m/s

spring constant = 80 N/m

coefficient of friction = 0.100 u

on applying the work energy theorem, you would realize,

change in kinetic energy = work done by spring and the friction

final kinetic energy - initial kinetic energy = work done by spring + the work done by friction

0.5 × 1.25 × 64 = 0.5 × 80 × x² + 0.1 × 1.25 × 9.8

x = 0.96 meters

therefore, the distance travelled by the spring compressed by the time the block first momentarily comes to rest is equal to 0.96 meters.

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two unknown materials have a coefficient friction of static friction of 1.3. Without any further information, which of the following options is most likely to be the coefficient of kinetic friction?

Answers

We have

the static coeffient friccion = 1.3

The coefficient of kinetic friction is always positive and bigger than 0

Therefore the coefficient of kinetic friction is 1.2

Newton's 2nd law states that, the acceleration of an object as ______________ is _________________to the magnitude of the __________, in the same ______________ as the net force, and _______________ to the ____________________ of the object.

Answers

Answer:

Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

A cannonball is launched upward with a velocity of 85.5m/s at an angle of 30 degrees above the horizontal.How long is the cannonball in the air?

Answers

ANSWER

[tex]8.72s[/tex]

EXPLANATION

To find the time of flight, apply the formula for a projectile's time of flight:

[tex]T=\frac{2u\sin \theta}{g}[/tex]

where u = initial velocity

θ = angle of launch

g = acceleration due to gravity

Therefore, the time of flight of the cannonball is:

[tex]\begin{gathered} T=\frac{2\cdot85.5\cdot\sin 30}{9.8} \\ T=8.72s \end{gathered}[/tex]

Draw a supply graph for pizzas. Show what would happen to the supply of pizzas if two more pizzerias open up in town. Identify the determinant of supply that caused the shift.

Answers

The supply curve will move to the correct, demonstrating an increment within the add-up to the amount of pizza as of now on the advertisement, in case two or more pizzerias open within the community.

To encourage data on the important picture, see the subtle elements underneath and the attachment.

The add up to several items and administrations that businesses in a country's economy point to offer inside a particular time outline is known as total supply, too known as residential last supply in economics.

It is the overall number of merchandise and administrations that businesses in an economy are arranged and able to offer for sale at a particular cost point.

A alter in supply is characterized as a move to the cleared out or right within the general price-quantity relationship that shapes a supply shift. A alter in supply is characterized as a move to the cleared out or right within the general price-quantity relationship that shapes a supply bend.

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When either low-mass or high-mass main sequence stars run out of hydrogen in the core, thecore will contain

Answers

To find

When either low-mass or high-mass main sequence stars run out of hydrogen in the core, the

core will contain

Explanation

When either low-mass or high-mass main sequence stars run out of hydrogen in the core, the

core will contain helium

Conclusion

The core will contain helium

Which of the following is NOT an example of a projectile.
O A tennis ball after it is struck by a tennis racket.
O A rocket that is launched from Earth's surface.
OA snowball rolling downhill.
O A football kicked to the goal post.

Answers

Snowball rolling downhill is not an example of a projectile.

What is projectile?

A projectile is any object is  thrown into space upon the  which the only acting force on is gravity. The primary force of the  acting on a projectile is the  gravity. This doesn't have  necessarily mean that other just  forces do not act on it, just that their effect is minimal the  compared to gravity.

A projectile is any object that once projected or dropped with the  continues in motion by its only own inertia and is influenced by  only by the downward force of  of gravity. By definition, in a  projectile has a single force of  that acts upon it - the force of gravity.

Thus this is the reason why snowball rolling downhill is not an example of projectile.

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Two forces F1 = -7.50i + 4.90j and F2 = 8.20i + 3.50j are acting on an object with a mass of m = 2.70 kg. The forces are measured in newtons, i and j are the unit vectors. What is the magnitude of the object's acceleration?

Answers

The magnitude of the object's acceleration is determined as 3.12 m/s².

What is the resultant force on the object?

The magnitude of resultant force acting on the object is calculated as follows;

F = √[(x₁i + x₂i)² + (y₁j + y₂j)²]

where;

x₁i is the initial force in x-directionx₂i is the final force in x-directiony₁j is the initial force in y-directiony₂j is the final force in y-direction

F = √[(-7.5 + 8.2)² + (4.9 + 3.5)²]

F = 8.43 N

The magnitude of the object's acceleration is calculated by applying Newton's second law of motion as follows;

F = ma

a = F/m

where;

F is the applied force on the objectm is the mass of the objecta is the acceleration of the object

a = (8.43) / (2.7)

a = 3.12 m/s²

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How many extra protons are on an object with a 8.31x107C charge?7.51x1024 protonsO 1.33x10-25 protons1.93x10-13 protons5.19x1012 protons

Answers

To find the number of protons (or electrons) in a charge object we need to divide the total charge on the object by the charge on each proton or electron. The charge of a proton is approximately 1.6e-19, then we have:

[tex]\frac{8.31\times10^7}{1.6\times10^{-19}}=5.19\times10^{26}[/tex]

Therefore, the number of extra protons on the object is 5.19e26

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