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4 years ago

The net force of an object is

Physics

2 answers:

Inessa05 [86]4 years ago

7 0

Answer:

the sum of all forces acting on an object.

Explanation:

Archy [21]4 years ago

6 0

A net force is defined as the sum of all the forces acting on an object. The equation below is the sum of N forces acting on an object. There may be several forces acting on an object, and when you add up all of those forces, the result is what we call the net force acting on the object

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A few years ago, an X-ray telescope detected a source called Cygnus X-3, whose intensity changed with a period of 4.8 hours. Thi

alina1380 [7]

Answer:

Explanation:

The star is revolving the black hole like earth revolves around the sun .so time period of rotation T is given by the following relation

T² = $\frac{4\pi^2\times R^3}{GM }$ , R is distance between black hole and star , M is mass of black hole

Given T = 4.8 hours

4.8² = $\frac{4\pi^2\times R^3}{GM }$

Using the same equation for earth sun system

24² = $\frac{4\pi^2\times (50R)^3}{GM_s }$ , Ms is mass of the sun and 50R is distance between the sun and the earth .

Dividing the equation

$(\frac{4.8}{24})^2$ = $\frac{M_s}{M}\times\frac{1^3}{50^3}$

$\frac{M}{M_s}$ = 2x 10⁻⁴

7 0

3 years ago

Darren drives to school in rush hour traffic and averages 28 mph. He returns home in mid-afternoon when there is less traffic an

Gala2k [10]

Answer:

distance between school and home is 21 miles

Explanation:

given data

in rush hour speed s1 = 28 mph

less traffic speed s2 = 42 mph

time t = 1 hr 15 min = 1.25 hr

to find out

distance d

solution

we consider here distance home to school is d and t1 time to reach at school

we get here distance equation when we go home to school that is

distance = 28 × t1 .......................1

and when we go school to home distance will be

distance = 42 × ( t - t1 )

distance = 42 × ( 1.25 - t1 ) ...................2

so from equation 1 and 2

28 × t1 = 42 × ( 1.25 - t1 )

t1 = 0.75

from equation 1

distance = 28 × t1

distance = 28 × 0.75

distance = 21 miles

4 0

3 years ago

A photon detector captures a photon with an energy of 4.29 ✕ 10−19 J. What is the wavelength, in nanometers, of the photon?

serious [3.7K]

Answer : The wavelength of photon is, $4.63\times 10^{2}nm$

Explanation : Given,

Energy of photon = $4.29\times 10^{-19}J$

Formula used :

$E=h\times \nu$

As, $\nu=\frac{c}{\lambda}$

So, $E=h\times \frac{c}{\lambda}$

where,

$\nu$ = frequency of photon

h = Planck's constant = $6.626\times 10^{-34}Js$

$\lambda$ = wavelength of photon = ?

c = speed of light = $3\times 10^8m/s$

Now put all the given values in the above formula, we get:

$4.29\times 10^{-19}J=(6.626\times 10^{-34}Js)\times \frac{(3\times 10^{8}m/s)}{\lambda}$

$\lambda=4.63\times 10^{-7}m=4.63\times 10^{-7}\times 10^9nm=4.63\times 10^{2}nm$

Conversion used : $1nm=10^{-9}m$

Therefore, the wavelength of photon is, $4.63\times 10^{2}nm$

6 0

3 years ago

At the top of the path, the horozontal velocity is___.

Setler [38]

Answer:

the answer is A have a nice day hope I helped

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4 years ago

1. Identify the significance of the following terms to the subject of the Civil War.

DanielleElmas [232]

What following terms I don’t see any please make your question clear

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4 years ago

The net force of an object is​

The net force of an object is