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Luda [366]
3 years ago
14

The gravitational force between two objects is 13.6x10-8N when they are 8cm apart. What would be the force between them when the

y are 24cm apart?​
Physics
1 answer:
Alecsey [184]3 years ago
6 0

Answer:

F {(0.24)}^{2}  = 13.6 \times  {10}^{ - 8} \\  F  =  \frac{13.6 \times  {10}^{ - 8}}{ {(0.24)}^{2} }N

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Air is cooled in a process with constant pressure of 150 kPa. Before the process begins, air has a specific volume of 0.062 m^3/
Mama L [17]

Answer:

The pressure is constant, and it is P = 150kpa.

the specific volumes are:

initial = 0.062 m^3/kg

final = 0.027 m^3/kg.

Then, the specific work can be written as:

W = \int\limits^{vf}_{vi} {Pdv} \, = P(vf - vi) = 150kPa*(0.0027 - 0.062)m^3/kg = -5.25 kPa*m^3/kg.

The fact that the work is negative, means that we need to apply work to the air in order to compress it.

Now, to write it in more common units we have that:

1 kPa*m^3 = 1000J.

-5.25 kPa*m^3/kg = -5250 J/kg.

7 0
3 years ago
Three equal point charges, each with charge 2.00 μC , are placed at the vertices of an equilateral triangle whose sides are of l
oksano4ka [1.4K]

Answer:

Explanation:

Energy of system of charges

= k q₁q₂ / r₁₂ + k q₁q₃ / r₁₃ + k q₃q₂ / r₃₂

q₁ , q₂ and q₃ are charges and  r₁₂ , r₁₃ , r₃₂ are densities between them

9 x 10⁹ ( 2x2 x10⁻¹²/ .25 + 2x2 x10⁻¹²/ .25 + 2x2 x10⁻¹²/ .25 )

= 9 x 10⁹  x 3 x 16 x 10⁻¹²

= 432 x 10⁻³

= .432 J .

4 0
3 years ago
What is the speed of a bobsled whose distance-time graph indicates that it traveled 116m in 29s?
ryzh [129]
Speed = Distance ÷ Time
Speed = 116 ÷ 29
Speed = 4
5 0
4 years ago
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Why is igneous rock always younger than any rock it cuts through?
grigory [225]
Igneous rocks are formed from magma. The magma extrudes through the existing rock as a sill
4 0
3 years ago
A person is 88 J of work lifting a grocery bag straight off the ground to a height of 1.7 m what is a grocery bags mass
Olin [163]

Answer:

5.277 kg

Explanation:

Since the formula for work is W = F * d and we are given distance and work, the force on the grocery bag is 88 = F * 1.7 F = 88 / 1.7 = 51.765 N.

We also know that force follows the equation F = m * a. Since the constant gravitational acceleration on earth is 9.81 m / s^2, we can find the mass through 51.765 = m * 9.81 m = 51.765/9.81 = 5.277 kg

6 0
3 years ago
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