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3 years ago

Why does Venus have the largest gravitational attraction to the sun compared to the other inner planets?Write your Claim below:

1 answer:

3 0

the force of gravity is proportional to the mass of an object and inversely proportional to the square of the distance between the objects.

You might be interested in

Which statement best describes the energy of activation?

Varvara68 [4.7K]

hi <3

i believe the answer would be D, as when the temperature increases the particles have more energy and can overcome the activation energy more rapidly.

hope this helps :)

4 0

3 years ago

Two moles of an ideal gas are compressed in a cylinder at a constant temperature of 80.0 ∘c until the original pressure has trip

elena55 [62]

The work done by a gas during an isothermal process is given by:
$W=nRT ln \frac{V_f}{V_i}$ (1)
where
n is the number of moles of the gas
R is the gas constant
T is the absolute temperature of the gas
$\frac{V_f}{V_i}$ is the ratio between the final volume and the initial volume of the gas

We need to calculate this ratio, and we can do it by using the gas pressure. In fact, for an isothermal process, Boyle's law states that the product between pressure and volume of the gas is constant:
$pV=k$
which can be rewritten as
$p_i V_i= p_f V_f$
which is equivalent to
$\frac{V_f}{V_i}= \frac{p_i}{p_f}$
The problem says that the pressure of the gas is tripled, therefore the ratio between final and initial volume is:
$\frac{V_f}{V_i} = \frac{p_i}{3 p_i} = \frac{1}{3}$

Now we can use eq.(1) to calculate the work done by the gas. The absolute temperature is
$T=80.0^{\circ}C+273 = 353 K$
The number of moles is n=2, therefore the work done is
$W=nRT ln \frac{V_f}{V_i}=(2 mol)(8.31 J/mol K) (353 K) \ln \frac{1}{3}= -6445 J$
And the work is negative, because it is done by the environment on the gas (the gas is compressed)

6 0

3 years ago

Two tiny conducting spheres are identical and carry charges of -20μC and +50μC. They are separeted by a distance of 2.50cm. (a)

Dahasolnce [82]

Answer:

$14400\ \text{N}$ , Attractive

$3240\ \text{N}$ , Repulsive

Explanation:

$q_1$ = -20 μC

$q_2$ = 50 μC

r = Distance between the charges = 2.5 cm

k = Coulomb constant = $9\times 10^9\ \text{Nm}^2/\text{C}^2$

Electrical force is given by

$F=\dfrac{kq_1q_2}{r^2}\\\Rightarrow F=\dfrac{9\times 10^9\times (-20\times 10^{-6})\times (50\times 10^{-6})}{(2.5\times10^{-2})^2}\\\Rightarrow F=-14400\ \text{N}$

The magnitude of force each sphere will experience is $14400\ \text{N}$

Since the charges have opposite charges they will attract each other.

Now the charges are brought into contact with each other so the resultant charge will be

$q=\dfrac{q_1+q_2}{2}\\\Rightarrow q=\dfrac{-20+50}{2}\\\Rightarrow q=15\ \mu\text{C}$

$F=\dfrac{kq^2}{r^2}\\\Rightarrow F=\dfrac{9\times 10^9\times (15\times 10^{-6})^2}{(2.5\times 10^{-2})^2}\\\Rightarrow F=3240\ \text{N}$

The magntude of the force the spheres experience will be $3240\ \text{N}$

The spheres have the same charge now so they will repel each other.

7 0

3 years ago

Soot particles ("black carbon aerosols" generally cause ________ of earth's atmosphere by ________ solar energy.

sineoko [7]

They cause an increase in temp of earths atmosphere or warming by absorbing solar energy. hope this helps

7 0

3 years ago

Why doesn’t earth get larger when new rock is added to the ocean floor at the mid-ocean ridge? Please help! Thanks

dybincka [34]

Earth doesn't get larger when new rock is added to the ocean floor because adding the new rock causes one of the other plate to sink back into the interior of earth.

3 0

3 years ago