Physics, 05.10.2019 23:30 HoodieHeem

Which changes would result in a decrease in the gravitational force between two objects? check all that apply.
increasing the distance between the objects
decreasing the distance between the objects
increasing the mass of one of the objects
increasing the mass of both objects
decreasing the mass of one of the objects
decreasing the mass of both objects

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Answer from: evalentine843

These sort of questions need to be looked at from a logical stand point.

There is a formula for this, lets see if it helps:

F = G × m₁*m₂ ÷ r²

If we increase the distance between the two, the gravitational force will be decreased (try plugging numbers in and see what happens). Logically as well, for example, if you increase the distance between to attracting magnets, their magnetic forces will decrease, same goes for gravitational force.

Therefore, number 1. is CORRECT.

Number 2. is incorrect because it is the opposite of number one.

Number 3. is incorrect because the larger the mass of an object then the stronger its gravitational force will be.

Number 4. is incorrect because once more, increasing the mass only means increasing the gravitational pull/force between the two objects.

Number 5. is correct since decreasing the mass with decrease the force it has on the other object.

Number 6. Is also correct because once again!! Decreasing the mass of one object or two will still decrease the gravitational pull between the two objects.

Answer from: Quest

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

$x(t)=ax(x-6)$

where $a$ is unknown. because the position is parabolic, there is symmetry about the midpoint at $t=3$ , and we know that

$x(3)=10\implies -9a=10\implies a=-\dfrac{10}9$

so that the position function is

$x(t)=-\dfrac{10}9x(x-6)$

which means the velocity is

$v(t)=\dfrac{\mathrm dx}{\mathrm dt}=-\dfrac{20}9x+\dfrac{60}9$

then the total distance traveled is

$\displaystyle\int_{t=0}^{t=6}|v(t)|\,\mathrm dt=\left\{\int_{t-0}^{t=3}-\int_{t=3}^{t=6}\right\}v(t)\,\mathrm dt=20$

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at $x=0$ and ends at $x=0$ , so its displacement is 0.

Answer from: Quest

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation

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