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3 years ago

Describe the universe and its components

Physics

1 answer:

svet-max [94.6K]3 years ago

5 0

The universe is a vast expanse of space.

Some components are planets, stars and galaxies.

hope that helped.

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which of the following values can you find by calculating the slope of a graph of velocity versus time position . displacement .

statuscvo [17]

The correct answer is: acceleration.

In fact, the slope of the graph of velocity versus time corresponds to the ratio between the variation of v and the variation of t:
$\frac{\Delta v}{\Delta t}$
But this is exactly the definition of acceleration: $a= \frac{\Delta v}{\Delta t}$ , so acceleration is the correct answer.

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3 years ago

A charge +q is located at the origin, while an identical charge is located on the x axis at x = +0.57 m. A third charge of +2q i

Jlenok [28]

Answer:

The third charge placed is 0.80 m.

Explanation:

Given that,

Distance = 0.57 m

First charge = q

Third charge = 2q

We need to calculate the electrostatic force on charge q₁ due to q₂

Using formula of electrostatic force

$F_{21}=\dfrac{kq_{1}q_{2}}{r_{1}^2}$

When placed another charge q₃ at certain distance from origin, then the net force on charge q₁ due to both charges is

$F_{net}=F_{21}+F_{31}$

The net electrostatic force on the charge at the origin doubles.

$2F_{21}=F_{21}+F_{31}$

$F_{31}=F_{21}$

$\dfrac{kq_{3}q_{1}}{r_{2}^2}=\dfrac{kq_{2}q_{1}}{r_{1}^2}$

$\dfrac{q_{3}}{r_{2}^2}=\dfrac{q_{2}}{r_{1}^2}$

$r_{2}^2=\dfrac{q_{3}}{q_{2}\timesr_{1}^2}$

$r_{2}=\sqrt{\dfrac{q_{3}}{q_{2}}}r_{1}$

Put the value into the formula

$r_{2}=\sqrt{\dfrac{2q}{q}}\times0.57$

$r_{2}=\sqrt{2}\times0.57$

$r_{2}=0.80\ m$

Hence, The third charge placed is 0.80 m from origin in x-axis.

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3 years ago

Can someone explain and slove question 4

Sonbull [250]

A. NaOH
B. PbNO3
C. FeSO4
D. P2O3
E. CSe2
F. HC2H3O2
G. HCIO
H. H2SO4

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3 years ago

Which of the following varies as the electric current varies? The magnetic force decreases The magnetic properties are varied Th

Paladinen [302]

The magnetic properties are varied

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4 years ago

Someone pls help me !!!!

Mekhanik [1.2K]

It’s d. The time it takes for the water to boil. It is adding different amounts of salt to see which one will boil quicker if adding an amount of salt.

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3 years ago

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