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4 years ago

11

Fomula of displacementtthelp

2 answers:

matrenka [14]4 years ago

5 0

Formula for Displacement: D = ΔX = (Xf - Xi)

Usimov [2.4K]4 years ago

4 0

Introduction to the Displacement and Acceleration Equation. This equation relates displacement, original velocity, constant acceleration, and time: It reads: Displacement equals the original velocity multiplied by time plus one half the acceleration multiplied by the square of time.

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Deneb and the Sun are two stars. Deneb has a diameter that is 109-200 times greater than that of the sun. When seen from earth,

saw5 [17]

I believe it is
B)The Sun is closer than Deneb

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3 years ago

A charged box (m=445 g, ????=+2.50 μC) is placed on a frictionless incline plane. Another charged box (????=+75.0 μC) is fixed i

victus00 [196]

The concept required to perform this exercise is given by the coulomb law.

The force expressed according to this law is given by

$F= \frac{kqQ}{r^2}$

Where,

$k = 8.99 * 10^9 N m^2 / C^2.$

q = charges of the objects

r= distance/radius

Our values are previously given, so

$q= 2.5*10^{-6}C\\Q= 75*10^{-6}C\\r=0.59$

Replacing,

$F=\frac{kqQ}{r^2}$

$F= \frac{(8.99 x 10^9)(2.5*10^{-6})(75*10^{-6})}{0.59^2}$

$F= 4.8423N$

The force acting on the block are given by,

$F-mgsin\theta = ma$

$a = \frac{F-mgsin\theta}{m}$

$a = \frac{4.8423-(0.445)(9.8)sin(35)}{0.445}$ $a = 10.31m/s^2$

Therefore the box is accelerated upward.

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3 years ago

which of these waves requires a medium to travel through light wave electromagnetic waves sound wave microwave

navik [9.2K]

Sound waves require a medium to travel through. :D

7 0

4 years ago

Read 2 more answers

A car accelerates uniformly in a straight line

Alinara [238K]

Recall that

${v_f}^2={v_i}^2=2a\Delta x$

The car starts from rest, so $v_i=0$ , and we get

${v_f}^2=2\left(2.8\dfrac{\rm m}{\mathrm s^2}\right)(69\,\mathrm m)\implies v_f\approx19.66\dfrac{\rm m}{\rm s}$

4 0

3 years ago

QveST [7]

Answer:

Total displacement 155 m

Explanation:

From the question, the formula to apply will be that of cosine rule where:

$c=\sqrt{a^2+b^2-2ab*cosC}$

where

a= 43 m , b=130m and c =? , <C=28° + 90° =118°

Substituting values in the equation as;

$c=\sqrt{43^2+130^2-2*43*130*cos118}$

$c=\sqrt{1849+16900-11180*-0.46947} \\\\c=\sqrt{1849+16900+5249} \\\\c=\sqrt{23998} \\\\\\c=155m$

6 0

3 years ago