Answer:
Explanation:
I'm assuming these are personal questions? Because a few of your questions are incorrect. I'll do my best to explain the ones I do know.
1.) Nobody actually knows what would happen if you travel faster than light. Einstein showed this was impossible due to it requiring an "infinite" amount of energy. My personal belief is that time itself stops existing. Your guess is as good as mine, nobody really knows.
2.) Most objects in the universe are round mostly because of gravity and density. All objects in the universe strive for minimum energy states. A sphere has a minimum gravitational potential than other geometry.
3.) Again, this is another one where nobody knows "why." On the macroscopic, there is classical mechanics. Then once you go into the microscopic world, you enter the realm of quantum mechanics. It's not that the "laws" are different. There is still conservation of momentum and such. Its just that they're expressed differently.
4.) The explanation for this is most likely due to light being composed of particles, photons. Sound cant travel if there is no medium, because sound is purely a wave. There is no such thing as a sound particle, at least not a physical one. You can think of light as traveling photons carrying energy. That's the particle interpretation of light.
Space missions do not use the Earth's momentum to catapult things in space. Each mass in the universe creates a corresponding gravitational field. So, planets create gravitational fields. The current theory of gravity is Einstein's theory of General Relativity, which states that energy and momentum curve spacetime. Special relativity proved the energy/mass equivalence. General relativity predicts that spacetime will curve around large masses. You can think of planets bending spacetime like a bowling ball in the center of a trampoline. This process in reality is 3-D and not 2-D like the trampoline analogy. But, the entire process of "catapulting" is using these gravitational "wells" of spacetime to minimize fuel and travel time.
5.) We don't know what beyond the observable universe. From the Big Bang, the universe only existed for about 13 billion years. So, light only traveled for 13 billion years long. We cant see passed the observable universe if the light hasn't even reached us yet. The reason the size of the observable universe is larger than 13 billion light years, is because we predict the universe is expanding faster than the speed of light. Special relativity demands that mass cannot go faster than the light, but it never restricted spacetime itself.
6.) Planets use gravity to keep their atmosphere. We could theoretically place a massive object on a planet and increase the gravitational field. But that is really impractical. We can't "create" gravity because we dont know if gravity is a particle. We only think of it at the moment as a non-physical wave, a ripple in spacetime. I have personal thought experiments in how we could terraform a planet, and create atmospheres. But that goes into electromagnetism, and not gravity.
A 12.0 kilogram mass weighs 84.0 newtons on a newly discovered planet. What is the magnitude of the acceleration due to gravity on this planet?
A) 1.20 m/s^2
B) 7.0 m/s^2
C) 9.8 m/s^2
D) 84 m/s^2
The weight is the mass times the acceleration due to gravity
[tex]Weight = mass*acceleration-due-to-gravity\\\\84N = 12kg* acceleration-due-to-gravity\\\\acceleration-due-to-gravity = 84N / 12kg\\\\acceleration-due-to-gravity = 7.0 m/s^2[/tex]
Thus the acceleration due to gravity is 7.0m/s^2.
Hope that helped!
Do you ever feel so depressed that you cant even cry anymore?
What happens to the period of the motion when the spring constant increases? Does it increase, decrease, or stay the same?
Answer:
The answer would be Increase becaause the springs constantmotion is increasing.
Explanation:
Which wave interaction results in a change in the direction of the wave as it passes through one medium to another medium? absorption diffraction reflection refraction.
Answer: Reflection
Explanation:
The incident wave is the wave coming from the source. When an incident wave hits an interface, it splits into two parts. There is the reflected wave and the transmitted wave. Assuming that the incident wave hits the interface directly, and not at an angle, the reflected wave will reflect back to the source, and the transmitted wave will pass through the interface and continue on its path. The reflected wave will be "upside down" as it gets sent back.
Answer:refraction
Explanation:
right on edge 2023
what is Newton's first law
Answer:
it is inertia
Explanation:
Answer:
Newton's first law: the law of inertia
Explanation:
A powerlifter deadlifts a 365 lb (167 kg) barbell to a height of 0. 85 m, and then lowers the bar, applying a constant upward force. The bar reaches the ground with a speed of 2 m/s. What was the work done by the powerlifter in lowering the bar to the ground (in J)
When the powerlifter deadlifts a 167 kg barbell to a height of 0. 85 m, the work done by the powerlifter is mathematically given as
W=-1057.11J
What was the work done by the powerlifter in lowering the bar to the ground?Question Parameters:
A powerlifter deadlifts a 365 lb (167 kg) barbell to a height of 0. 85 m,
The bar reaches the ground with a speed of 2 m/s
Generally, the equation for the work done is mathematically given as
W=0.5mvf^2+mghf)-(0.5mv1^2+mghi)
Therefore
W=0.5*16*167*2^2-(167*9.8*0.85)
W=-1057.11J
In conclusion, work done is
W=-1057.11J
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Which catastrophic event does NOT have an earthquake as a possible trigger?
hurricane?
tsunami?
landslide?
Answer:
hurricane
Explanation:
I'm not that smart so...yeah
15 points
Answer:C
Explanation:
Inner core, outer core, mantle, crust
Answer:
c
Explanation:
Read the scenario below and answer the question that follows. Mariah trained for months leading up to the marathon, and she won. After seeing this, her friends and family would describe her as motivated and athletic. According to Maslow, which need is Mariah trying to meet? A. Safety B. Physiological C. Esteem D. Cognitive Please select the best answer from the choices provided A B C D.
According to Maslow, the need that Mariah is trying to meet by training for months in order for her family to describe her as athletic and motivated is esteem.
What are Maslow's Hierarchy of Needs?In 1943, an American psychologist called Abraham Maslow classified human needs in an hierarchical order.
The hierarchy of needs are as follows:
physiological needs - food and sheltersafety needs - securitylove and belonging needs - familyesteem needs - confidence in personal growthself-actualization needs - fulfilment of full potentialAccording to this question, Mariah is trying to meet esteem needs.
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Answer:
C
Explanation:
Question # 1 Multiple Choice A suspect who fakes intellectual disability in order to explain his innocence in a murder _____. is insane is insane is psychotic is psychotic is malingering is malingering has a mental illness
Given what we know we can confirm that a suspect who fakes intellectual disability in order to explain his innocence in a murder is malingering.
What is malingering?This is the action of pretending to be ill in some way in order to avoid a certain responsibility. In this case, the suspect is malingering in order to avoid the consequences of their actions.
Therefore, we can confirm that a suspect who fakes intellectual disability in order to explain his innocence in a murder is malingering.
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What’s More
Activity 1. Strength of IMFA and Physical Properties of
Covalent Compounds
For each pair of molecules, identify the one with the higher boiling point (BP), melting
point (MP), viscosity (V), surface tension (ST) and vapor pressure (VP). Briefly explain
your choice.
wave has a Wavelength of .5 meters and a Frequency of 100 Hz.
What is its velocity
v=λf
v=0.5 x 100
v = 50 m/s
good evening! Can someone please answer this, ill give you brainliest and your earning 50 points. Would be very appreciated.
Answer:
The gases which are very good at absorbing long wave photons of infrared gas.
Explanation:
These absorption is called green house effectIt is the main reason behind global warmingThe force that opposes the motion of an object is called:.
Answer:
The Force of Friction!
Explanation:
I hope I could help you, Brainliest please!
What factors do NOT affect friction between two objects? Explain how you know this.
The frictional force between two bodies depends mainly on three factors: (I) the adhesion between body surfaces
(ii) roughness of the surface
(iii) deformation of bodies.
<3
the point where the parallel rays of light converge in a concave mirror is called..........
Answer : Focal Point
The parallel light rays striking the concave mirror reflect back and converge at the Focal Point in front of it.
Sirius Satellite Radio provides continuous radio broadcasts across the United States. Sirius does not use geostationary satellite(s). Explain why you think Sirius consists of one satellite or a constellation.
Sirius represented a satellite constellation operated by the Nordic Satellite AB (NSAB). It was used by Nordic countries.
What was Sirius?Sirius was a satellite constellation operated by the SES SIRIUS AB (or former Nordic Satellite AB) created by Sweden and Norway governments.
Sirius constellation provided the Nordic countries with different types of communications outcomes (for example, for tv issues).
This satellite constellation composed of Sirius satellites was the only one to operate in the Tundra orbit (5.0° East, geostationary orbit).
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Vr1 = _______volts
O 30.
O 160.
O 24.
O 6.0
Answer:
Explanation:
Potential drop across R1, VR1
= Supply Voltage
= 24V
Well look at the diagram
Current passing refered to II is constantWe know
according to ohms law
[tex]\\ \rm\Rrightarrow \dfrac{V}{I}=R[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{V}{R}=I[/tex]
As I is constantV remains constantOption C is correct
During early research in nuclear energy, why were scientists surprised that the products from splitting a uranium nucleus had less mass than the reactants? They expected that the large release of energy would cause an increase in mass. Up to that time, only chemical changes were known to form less mass than they started with. All known changes always started and ended with the same amount of mass. Other known nuclear changes resulted in the same mass of products as reactants.
The scientist gets surprised In terms of the masses of the subatomic particles, scientists anticipated the rule of conservation of mass to apply to nuclear fission and it got failed.
What is nuclear power?The utilization of nuclear reactions to generate energy is known as a nuclear power. Nuclear fission, nuclear decay, and nuclear fusion processes are all sources of nuclear energy.
Nuclear power facilities currently produce the great bulk of the electricity generated by nuclear fission of uranium and plutonium.
In terms of the masses of the subatomic particles, scientists anticipated the rule of conservation of mass to apply to nuclear fission.
An atom's mass is not equal to the sum of the masses of the subatomic particles that make it up in actuality.
The energy that bonds the subatomic particles is the reason behind this. When a link is broken, the mass of the energy of the bonds is lost, resulting in what we now refer to as a mass defect.
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Answer:
I don't know the answer but I can say the answer isn't B, so don't pick B.
Explanation:
I got it wrong on edge test, i picked B but, B is not correct.
A positive test charge of 5.0x10 -6 C is in an electric field that exerts a force of 2.0x10 -4 N on it. What is the magnitude of the electric field at the location of the test charge
answer:
click on the picture, hope it helps
The magnitude of the electric field at that location is is 40 N.C⁻¹.
What is electric field?The force per unit charge exerted on a positive test charge that is at rest at a given position is the force per unit charge that is used to define the electric field analytically.
Electric charge or magnetic fields with variable amplitudes can produce an electric field.
Given parameters:
Charge of the positive test charge, q = 5.0x10⁻⁶ C.
Electric force exerted by the electric field, F = 2.0x10⁻⁴ N.
Then, electric field at the position, E = F/q
= 2.0x10⁻⁴ / 5.0x10⁻⁶ N.C⁻¹.
= 40 N.C⁻¹.
Hence, the magnitude of the electric field at the location of the test charge is 40 N.C⁻¹.
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What should scientists do when they see that the data collection or analysis
from their experiment has limitations?
A. Decide not to report any of the experimental results.
ОС
B. Repeat the experiment to see if it still has limitations.
C. Ignore the limitations when they draw conclusions.
D. Describe the limitations in detail in their final report.
Answer:
repeat using same variables
Explanation:
have peer repeat using same variables
Two people push a car for 3 s with a combined net force of 200 N. Calculate the impulse provided to the car.
Question :-
Two people push the car for 3 sec with combined net Force of 200 N. Calculate the Impulse provided to car .Answer :-
Impulse provided to car is 600 Ns .[tex] \rule {180pt} {2pt} [/tex]
Given :-
Time = 3 secForce = 200 NTo Find :-
Impulse = ?Solution :-
As per the provided information in the given question, we have been given that the Time take by the people to push the car is 3 seconds . The Force required is 200 N . And, we have been asked to calculate the Impulse .
For calculating the Impulse , we will use the Formula :-
Impulse = Force × TimeTherefore , by Substituting the given values in the above Formula :-
⇒ Impulse = Force × Time
⇒ Impulse = 200 × 3
⇒ Impulse = 600
Hence :-
Impulse = 600 Ns .[tex] \underline {\rule {180pt} {4pt}} [/tex]
fill in the blanks
An object's acceleration describes its change in speed. If the speed of an object increases with time, its graph will have a ---------- gradient. If an object slows down, its graph will have a --------- gradient.
Answer:
positive gradient
Negative gradient
Explanation:
An object's acceleration describes its change in speed. If the speed of an object increases with time, its graph will have a positive gradient. If an object slows down, its graph will have a Negative gradient.
A straight line sloping upward to the right represents a positive gradient while a straight line sloping downward to the right represents negative gradient.
An object's acceleration describes its change in speed. If the speed of an object increases with time, its graph will have a positive gradient. If an object slows down, its graph will have a negative gradient.
An object's acceleration describes its change in speed.
If the speed of an object increases with time, its graph will have a positive gradient.
If an object slows down, its graph will have a negative gradient.
The gradient of a graph is the slope of the line. In the case of a speed-time graph, the gradient of the graph represents the acceleration of the object. If the gradient of the graph is positive, the object is accelerating. If the gradient of the graph is negative, the object is decelerating.
When an object's speed increases, the graph of its speed-time will have a positive gradient. This is because the object is getting faster over time, which means that its acceleration is positive.
When an object's speed decreases, the graph of its speed-time will have a negative gradient. This is because the object is getting slower over time, which means that its acceleration is negative.
Hence, An object's acceleration describes its change in speed. If the speed of an object increases with time, its graph will have a positive gradient. If an object slows down, its graph will have a negative gradient.
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can someone please answer this, ill give you brainliest and your getting 100 points.
Explanation:
Science says that youngest rock can be found in between ocean .
So plates should move away from each other to form ocean .
Option C is correct
Where would you find the youngest rock? At the boundary between the
O Pacific and North American plates
O Nazca and South American plates
O African and South American plates ✓
O Indian and Eurasian plates
When two tactonic plates diverge ,the water gets a way to space out , helping it to find a way to flow ,which helps it to carry out soil with itself, resulting in the formation of rocks , farther the rocks ,older they are cause of flow of water and surface area.How do bearings help reduce friction?
[tex]{\large{\red{\mapsto{\maltese{\underline{\green{\boxed{\blue{\underbrace{\overbrace{\pink{\pmb{\bf{Answer:}}}}}}}}}}}}}}[/tex]
Bearings are constrained elements used to reduce the friction of certain moving parts in a machine or device. This is done by replacing sliding friction with rolling friction. Bearings are used to provide better linear motion or rotation around a fixed axis.Roller bearings are typically cylinders similar to free rollers, except that they are constrained in their motion. Ball bearings are spheres that are held in a track.how much work was done on a charge of 3.0 to move it through 12v electric potential difference
Answer:
Hence, the work done in moving the charge is 45 J.( Too lazy to translate it to Spanish T_T )Answer:
45 J
Explanation:
Potential difference (V)= 15 V
Charge (Q)= 3C
We know that
The potential difference(p.d) between two point in an electric circuit is defined as the amount of work done in moving a unit charge from one point to the other point.
Potential difference (V) = work done (W)/Charge (Q)
V= W/Q
Putting the values in the above formula we get:
15 V = W / 3 C
W= 15 V × 3 C
W= 45 J
Hence, the work done in moving the charge is 45 J.
Imagine that martians launch a rocket toward the Earth at a great speed. While the rocket is traveling toward us, it will appear _____ than it actually is.
A. Larger
B. Darker
C. More blue
D. More red
Answer:
The rocket would appear more blue than it actually is.
Explanation:
Assume that the rocket was initially at a distance of [tex]d[/tex] away from the Earth. Let [tex]c[/tex] denote the speed of light. It would take a time of [tex](d / c)[/tex] before the first crest of the light (an electromagnetic wave) from the rocket arrive at the Earth.
If [tex]T[/tex] denote the period of this EM wave. The next crest of this wave would leave the rocket at a time of exactly [tex]T\![/tex] after the previous crest.
Let [tex]v[/tex] denote the speed at which the rocket travels toward the Earth. In that time period of [tex]T[/tex], the rocket would have moved towards the earth by [tex]v\, T[/tex]. Thus, the next crest of this wave would need to cover a distance of only [tex](d - v\, T)[/tex] (as opposed to [tex]d[/tex], the distance required for the first crest) before reaching the Earth. Thus, this subsequent crest would need to travel for a distance of only [tex](d - v\, T) / c[/tex] before reaching the earth.
Let [tex]t = 0[/tex] refers to the time when the first crest of the light from the rocket leaves the rocket. The next crest would leave the rocket at time [tex]t = T[/tex].
The first crest would arrive at the earth at [tex]t = (d / c)[/tex].The next crest would arrive at the earth at [tex]t = T + ((d - v\, T) / c)[/tex].Thus, it would appear to an observer on the earth that the period of the light from the rocket was:
[tex]\begin{aligned}& \left(T + \frac{d - v\, T}{c}\right) - \left(\frac{d}{c}\right) \\ =\; & T - \frac{v\, T}{c}\end{aligned}[/tex].
In other words, observers on the Earth would find the period of this wave shorter than it actually is at the rocket ([tex]T - (v\, T) / c[/tex] as opposed to [tex]T[/tex].)
The frequency of a wave is inversely proportional to the period of that wave. Thus, observers on the Earth would find the frequency of the wave from the rocket higher than the frequency of this wave at the rocket.
EM waves of higher frequency (higher energy) appear more blue than ones of lower frequency. Therefore, this rocket would appear more blue to observers on the Earth than it actually is.
What is the acceleration of
a 6 kg object being pulled
with a force of 12 N?
Answer:
2 m/s^2
Explanation:
Use Newton's 2nd Law of motion:
F = ma
12N = (6kg)a
a = 12/6
a = 2 m/s^2
A slinky was measured to carry a longitudinal wave 10 tiles (on the floor) per second. One tile is 30 cm. What is the speed of this wave? In your answer , use millimeters and scientific notation
(10 tiles/sec) · (30 cm/tile) = 300 cm/sec
That's 3000 mm/sec
That's 3 x 10³ mm/sec
Light incident on a lake surface is partly reflected and partly refracted. How is the reflected ray different from the incident ray? A. The incident ray is unpolarized whereas the reflected ray is horizontally polarized. B. The incident ray is unpolarized whereas the reflected ray is vertically polarized. C. The incident ray is horizontally polarized whereas the reflected ray is unpolarized. D. The incident ray is vertically polarized whereas the reflected ray is unpolarized. E. The incident ray is vertically polarized whereas the reflected ray is horizontally polarized.
Option B is correct.
(B )The incident ray is unpolarized whereas the reflected ray is vertically polarized.
What is a ray?Ray is the next in a series of characters. Ray is made up of two elements: a line and a line segment. It has one terminating end and one indefinitely extending end.
The ray's length cannot be determined. A ray is seen in the diagram below.
Reason ;
Many light sources, such as the sun, create polarised waves ( randomly). Unpolarized light is made up of a large number of waves with all conceivable polarisation directions.
Hence option B is correct.
(B )The incident ray is unpolarized whereas the reflected ray is vertically polarized.
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