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tigry1 [53]
3 years ago
7

Which of the following statements are true? Check all that apply. Check all that apply. The gravitational force between two obje

cts is inversely proportional to the square of the distance between the two objects. The gravitational force between two objects is proportional to the product of the masses of the two objects. The gravitational force between two objects is proportional to the square of the distance between the two objects. The gravitational force between two objects is inversely proportional to the distance between the two objects. The gravitational force between two objects is proportional to the distance between the two objects. The gravitational force between two objects is inversely proportional to the product of the masses of the two objects.
Physics
2 answers:
lesya692 [45]3 years ago
5 0

Explanation:

The gravitational force acting between two masses is given by :;

F=G\dfrac{m_1m_2}{d^2}

Where

G is the universal gravitational constant

m₁ and m₂ are masses

d is the distance between masses

The correct statements are as follows :

1. The gravitational force between two objects is inversely proportional to the square of the distance between the two objects.

2. The gravitational force between two objects is proportional to the product of the masses of the two objects.

Hence, this is the required solution.

AveGali [126]3 years ago
3 0

<em>The gravitational force between two objects is inversely proportional to the square of the distance between the two objects.</em>

The gravitational force between two objects is proportional to the product of the masses of the two objects.

The gravitational force between two objects is proportional to the square of the distance between the two objects.  <em> no</em>

The gravitational force between two objects is inversely proportional to the distance between the two objects.  <em> no</em>

The gravitational force between two objects is proportional to the distance between the two objects.  <em> no</em>

The gravitational force between two objects is inversely proportional to the product of the masses of the two objects. <em> no</em>

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Consider a 2.54-cm-diameter power line for which the potential difference from the ground, 19.6 m below, to the power line is 11
tiny-mole [99]

Answer:

The line charge density is 1.59\times10^{-4}\ C/m

Explanation:

Given that,

Diameter = 2.54 cm

Distance = 19.6 m

Potential difference = 115 kV

We need to calculate the line charge density

Using formula of potential difference

V=EA

V=\dfrac{\lambda}{2\pi\epsilon_{0}r}\times\pi r^2

\lambda=\dfrac{V\times2\epsilon_{0}}{r}

Where, r = radius

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Put the value into the formula

\lambda=\dfrac{115\times10^{3}\times2\times8.8\times10^{-12}}{1.27\times10^{-2}}

\lambda=1.59\times10^{-4}\ C/m

Hence, The line charge density is 1.59\times10^{-4}\ C/m

4 0
4 years ago
A human being can be electrocuted if a current as small as 55 mA passes near the heart. An electrician working with sweaty hands
evablogger [386]

Answer:

The lethal voltage for the electrician under those conditions is 126.5 V.

Explanation:

To discover what is the lethal voltage to the electrician we need to find out what is the voltage that produces 55 mA = 0.055 A when across a resistance of 2300 Ohms (Electrician's body resistancy). For that we'll use Ohm's Law wich is expressed by the following equation:

V = i*R

Where V is the voltage we want to find out, i is the current wich is lethal to the electrician and R is his body resistance. By applying the given values we have:

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The lethal voltage for the electrician under those conditions is 126.5 V.

4 0
3 years ago
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Find the total electric charge of 1.7 kg of electrons. me=9.11×10−31kg, e=1.60×10−19C.
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Answer:

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So the number of electrons contained in M=1.7 kg of mass is

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The charge of one electron is

e=1.60\cdot 10^{-19} C

So, the total charge of these electrons is equal to the charge of one electron times the number of electrons:

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