What happens to us after we die? How did so much life appear on our planet when others seem devoid of any species at all? Who, if anyone, pulls the strings of our universe? Is it some all-powerful god in control or are there physical and mathematical principles driving the engine of our existence?.
Why is gravity not a real force? Why is light pure energy? Why is physics scale invariant? Why is the centrifugal force talked about so much if it's not real?.
What happens to us after we die? How did so much life appear on our planet when others seem devoid of any species at all? Who, if anyone, pulls the strings of our universe? Is it some all-powerful god in control or are there physical and mathematical principles driving the engine of our existence?.
1Quantum Gravity.
The biggest unsolved problem in fundamental physics is how gravity and the quantum will be made to coexist within the same theory.
2) Particle Masses.
3) The “Measurement” Problem.
4) Turbulence.
5) Dark Energy.
6) Dark Matter.
7) Complexity.
8) The Matter-Antimatter..
Size of universe: The diameter of the observable universe is about 93 billion light-years, but what is the size of the whole universe? Is the universe infinite? Baryon asymmetry: Why is there far more matter than antimatter in the observable universe?.
The biggest unsolved problem in fundamental physics is how gravity and the quantum will be made to coexist within the same theory.
Quantum Gravity [1] is required to make the whole of physics logically consistent..
Quantum mechanics is deemed the hardest part of physics..
Studybay is the place to go for answers to your physics problems.
Ask your question here, and you'll get the best solutions that will help you finish your project as quickly as possible with the most favorable outcomes..
Why? Because every topic in physics is linked with each other.
Students also need to enhance their problem-solving skills to solve problems, numerical, and equations.
The subject contains very complex concepts and sometimes acts like an experimental science.Jul 1, 2022.
Physics is all about concepts, the better you understand the better you get.
There can be many reasons why you are not able to solve? May be the book you are reading is difficult enough to understand or you are not solving the examples before starting the problems or you are not able to get the concept etc.
physics is not hard.
It is hard only because you think physics is hard.
Mostly students starts thinking that physics is hard even before understanding it.
Teachers told us that physics is hard.
We don't solve numericals.
We don't use our brain.
Not find it interesting.
It only depends on your thinking.
Take it easy and try to make it funny.
Answer: A First, we’ll need to rely on Newton’s Third Law of Motion.
This law states that two bodies exert forces of equal magnitude and opposite direction on each other.
In this case, the force that block Y exerts on block X has magnitude Fdown, and the force that block X exerts on block Y has magnitude Fup.
By Newton’s Third Law, these forces sho.
Answer: B We can first analyze the potential energy of the block-Earth system at points A and C.
We have the following formula: In this equation, Ug is the change in gravitational potential energy, m is the mass, g is the gravitational constant (9.8m/s2), and Δyis the change in height.
So, the gravitational potential energy at point A is: UA=mgh.
A.
Answer: C To answer this question, we can once again analyze the energy at both points.
Since friction is negligible, we know that the total energy at both points is conserved, and therefore equal.
So, the total energy at the beginning of the track consists only of gravitational potential energy.
The total energy at the end of the track consists of.
Answer: B For this question, we’ll need to rely on the following formula: In this equation, Δp is the momentum, F is the force, and Δtis the change in time.
So, if we compute the area under the curve for each object, we’ll be able to determine the change in momentum for each.
Since the areas under both curves have the shape of a triangle, we can si.
Answer: D We’ll first need to recall the equation for work: Note that the force which contributes to work (W) is the force (F) that acts parallelto the direction (d) of motion.
In this case, since the force is exerted upwards, we have that the work done by the person is positive if the motion is upwards and negative if the motion is downwards.
So, .
Answer: A This problem is tricky in that we’ll need to work with equations involving unknowns since we’re not really given many concrete numbers.
So, our strategy will be to analyze the equations in terms of the unknowns in order to compare them.
Let’s first look at the relevant equations for gravitational force and circular motion: In this equatio.
Answer: A When discussing angular momentum, we should recall that angular momentum is always conserved.
So, the total angular momentum before and after the collision should be the same.
This means that the correct answer choice is either A or B.
Also, let’s use this fact to set up equations in order to learn more about the system.
The equations tha.
Answer: B, D This question is one of the infamous multiple-select questions, so you’ll need to be extra careful when selecting your answers.
Let’s go through each answer choice and determine whether it’s true or not.
For answer choice A, we’ll need to note that the satellite’s rotational kinetic energy is dependent on the radius.
But, since the orb.
Physics Questions As light from a star spreads out and weakens, do gaps form between the photons.
Can a fire have a shadow.
Can air make shadows.
Can gold be created from other elements.
Can light bend around corners.
Can momentum be hidden to human eyes like how kinetic energy can be hidden as heat? .
What Makes the Hardest Equations in Physics So Difficult.
The Navier-Stokes equations describe simple, everyday phenomena, like water flowing from a garden hose, yet they provide a million-dollar mathematical challenge.
Physics contains equations that describe everything from the stretching of space-time to the flitter of photons.
Why is physics so hard compared to math.
Because Physics classes are about problem solving, not just computation, especially the beginning ones.
Every problem in an intro Mechanics course is a “word” problem, where you are given only some information.
2022 book by Sabine Hossenfelder
Uniformity of a material or system at every point
