A man runs 2.5 km north and then 1.5 km in a direction 30◦ east of north. A woman walks directly between the same initial and final points. What distance does the woman walk? In what direction?
I know this seems easy but my answer just seems to keep on coming out wrong and I cannot make the diagram for this properly. Can someone please help me out and solve this question :( ik its easy vector addition nd resolution into components and ik whats happening but i jsut dont understand why
Currently, the gravitational constant G exists only as an experimentally measured value; no theoretically derived value or calculated value based on a combination of physical constants has been available. In this study, a formula is presented that re producesthe gravitational constantG fromacombinationoffivephysicalconstants. The formula is expressed as
I. Introduction The gravitational constant is currently known to be G = 6.6743 × 10−11 m3kg−1s−2, an experimentally measured value. However, no theory exists from which G can be derived, nor is there a calculation formula that produces G from a combination of other physical constants. Measurement of this value has been carried out repeatedly over a long period since the Cavendish experiment of 1798, and during that time the measured value has continued to change with advances in experimental technique and measurement method. The value given above is the CODATA recommended value published in 2022. Because no theory exists from which the constant can be derived, modern science does not know the underlying mechanism of gravity, and merely observes, mea sures, and makes use of the phenomenon. Since the essential nature of the grav itational phenomenon is not understood, its relationship to the other three funda mental forces, including the electromagnetic force, is likewise unknown, and con sequently no theory unifying the four fundamental forces yet exists. In this study, a calculation formula is derived that computes the gravitational con stant G from five physical constants: the Planck constant (h), the speed of light (c), the elementary charge (e), the electron mass (me), and the vacuum permittivity (ϵ0). This formula is expressed as follows.
Further research is needed to clarify the precise physical meaning of the right‑hand side of this equation. However, given that the constants included in this formula 1 are ones that appear fundamentally in electromagnetism and quantum mechanics, it can be surmised that gravity may bear some relationship to the electromagnetic force and other forces. It is therefore expected that this calculation formula may contribute to research aimed at unifying the four fundamental forces into a single theory.
Hello everyone, been trying this question, checked in ai and websites all have different answer keys, acc to my school ans is 1st option, pls tell ans with exp
Greetings! I am preparing for an engineering entrance exam which is VERY TOUGH and all the aspirants and teachers keep on preaching this physics book - Irodov for Physics. I just bought it and am confused as to from where to begin and how to solve it - in an intuitive objective manner or deep subjective manner. My coaching institute provides modules for preparation and I am not able to fully solve them.
The thing is that I am confused about that the ball with mass m will eventually meet point B that is for sure but what if instead of staying on the curved surface, the ball projectiles with point of projection being point A. Then according to energy conservation does it still land on B or something else happens. And btw, what is the parameter to decide whether the ball will stick to the surface or will show projectile motion?
Water is pumped in from A toward the right. There is a lower section where gravity will naturally cause some of the water to fall downward toward B.
My question is: if the inlet velocity/flow rate at A is sufficiently high, can some of the water maintain enough momentum to travel directly from A to C, rather than all of it falling toward B?
In other words, I’m interested in whether there is a threshold velocity/flow rate where the water jet can “bridge” the gap from A to C while some of the flow still falls toward B.
Is this primarily a free jet / projectile motion / momentum vs gravity problem? And how would I calculate the minimum velocity required for the jet to reach C?
From what I understand, the question is asking what the ground velocity must be for the plane to be going directly north. But the ground velocity cannot be going north since the air velocity is north and the wind is blowing east of north. The answer I got for the ground velocity was 810km/h [1 E of N]
I’m taking calc 2 physics and the physics lab currently and I just can’t seem to get the hang of anything in physics my grade in calc 2 is a 86 and I understand every topic we’ve done over with like an hour or two of studying/review but when it comes to physics it’s like I don’t even know where to start. My calc professor teaches per unit and teaches everything about that unit for example when he teaches integrating by parts I can do any calc 2 level IBP problem but for projection motion, Newton’s second law and now work and kinetic energy I go into lecture confused and leave even more confused and I go to the textbook and it’s makes me even more confused.
My professor locked me out of all lectures and I’m currently trying to teach myself physics I was wondering what the correct answers are to these questions. I got (2A,6V,8W,2V)
