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2 years ago

Why is venus the hottest planet in the solar system

2 answers:

8 0

Venus is the hottest world in the solar system. Although Venus is not the planet closest to the sun, its dense atmosphere traps heat in a runaway version of the greenhouse effect that warms Earth.

mars1129 [50]2 years ago

3 0

Venus is the hottest planet in the Solar System. It is so hot because it is covered in a thick layer of clouds. The thick clouds on Venus make the sky look orange. The sun's rays pass . through the clouds and the planet's surface warms up. The clouds on Venus stop the heat from escaping so the planet gets hotter and hotter.

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A box experiencing a gravitational force of 600 N is being pulled to the right with force of 250 N. A 25 N frictional force acts

jeka57 [31]

The answer is: 0 Newtons

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Can someone please help me

Tamiku [17]

<em>F</em> = 153 N

$\theta = 11.3°$

Explanation:

Let us define first our directional convention. Anything pointing up or to the right is considered positive and anything pointing down or to the left is considered negative. Now let's look at the components $F_{x}$ and $F_{y}$ :

$F_{x}$ = 350 N - 200 N = 150 N

$F_{y}$ = 180 N - 150 N = 30 N

The magnitude of the resultant force <em>F</em> is given by

$F = \sqrt{F_{x}^{2}+F_{y}^{2}}$

$\:\:\:\:\:\:= \sqrt{(150\:N)^{2}+(30\:N)^{2}}$

$\:\:\:\:\:\:=153\:N$

To find the direction $\theta$ , we use

$\tan \theta = \dfrac{F_{y}}{F_{x}}=\dfrac{30\:N}{150\:N}=0.2$

$\theta = \tan^{-1}(0.2) = 11.3°$

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2 years ago

A wheel on a car is rolling without slipping along level ground. The speed of the car is 36 m/s. The wheel has an outer diameter

lutik1710 [3]

Answer:

The speed of the top of the wheel is twice the speed of the car.

That is: 72 m/s

Explanation:

To find the speed of the top of the wheel, we need to combine to velocities: the tangential velocity of the rotating wheel due to rotational motion $(v_t=\omega\,R=\omega\,(0.25\,m)\,)$ - with $\omega$ being the wheel's angular velocity,

plus the velocity due to the translation of the center of mass (v = 36 m/s).

The wheel's angular velocity (in radians per second) can be obtained using the tangential velocity for the pure rotational motion and it equals: $\omega=\frac{v_t}{r} =\frac{36}{0.25} \,s^{-1}$

Then the addition of these two velocities equals:

$\omega\,R+v=\frac{36}{0.25} (0.25)\,\,\frac{m}{s} +36\,\,\frac{m}{s} =72\,\,\frac{m}{s}$

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3 years ago

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melamori03 [73]

Answer:

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2 years ago