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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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Answer:

Te =  23.4 °C

Explanation:

Given:-

- The mass of iron horseshoe, m = 1.50 kg

- The initial temperature of horseshoe, Ti_h = 550°C

- The specific heat capacity of iron, ci = 448 J/kgC

- The mass of water, M = 25 kg

- The initial temperature of water, Ti_w = 20°C

- The specific heat capacity of water, cw = 4186 J/kgC

Find:-

What is the final temperature of the water–horseshoe system?

Solution:-

- The interaction of horseshoe and water at their respective initial temperatures will obey the Zeroth and First Law of thermodynamics. The horseshoe at higher temperature comes in thermal equilibrium with the water at lower temperature. We denote the equilibrium temperature as (Te) and apply the First Law of thermodynamics on the system:

                             m*ci*( Ti_h - Te) = M*cw*( Te - Ti_w )

- Solve for (Te):

                             m*ci*( Ti_h ) + M*cw*( Ti_w ) = Te* (m*ci + M*cw )

                             Te = [ m*ci*( Ti_h ) + M*cw*( Ti_w ) ] / [ m*ci + M*cw ]

- Plug in the values and evaluate (Te):

                             Te = [1.5*448*550 + 25*4186*20 ] / [ 1.5*448 + 25*4186 ]

                             Te = 2462600 / 105322

                             Te =  23.4 °C    

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What does Gauss Law state?

It states that the electric flux across any closed surface is directly proportional to the net electric charge enclosed by the surface.

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Where,

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