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3 years ago

What is unique about the rotation of Uranus, and what caused it?

2 answers:

8 0

Sample Response: The axis of Uranus is tilted so that it appears to be rotating on its side. This may have been caused by a collision with a planet-sized body, which dramatically changed Uranus's rotation.

Juli2301 [7.4K]3 years ago

5 0

Uranus rotates on its side. Its axial tilt is 97.8 degrees, which is 74.3 degrees more than Earth. Scientists suspect that it may have been caused by a collision or series of collisions, although they believe it is probably more complicated than that.

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40 POINTS

goldenfox [79]

Answer:

<em>Well, I think the best answer will be is </em><em>B) Gravity. Good luck!</em>

5 0

3 years ago

Read 2 more answers

A person rolls a barrel up an inclined plane with a length of 6m and a height of 3m/ How much force is needed to roll up the bar

snow_lady [41]

Answer:

Length (l) = 6 m

height (h) = 3 m

Load(L) = 500 N

Effort (E) = ?

we know the principal that

E * l = L * h

6 E = 500 * 3

6E = 1500

E = 250

therefore 250 N work is done on the barrel.

8 0

4 years ago

A machine part has the shape of a solid uniform sphere of mass 250 g and a diameter of 4.30 cm. It is spinning about a frictionl

zysi [14]

Answer: $\alpha =9.302\ rad/s^2$

Explanation:

Given

mass of sphere $m=250\ gm$

diameter of sphere $d=4.30\ cm$

radius $r=\frac{4.30}{2}\ cm$

$f=0.0200\ N$

friction will provide resisting torque so

$f\times r=I\times \alpha$

where $I=\text{moment of Inertia}$

$f=\text{friction force}$

$\alpha =\text{angular acceleration}$

$I=\frac{2}{5}mr^2$

$0.02\times r=\frac{2}{5}mr^2\times \alpha$

$\alpha =\frac{5}{2r}\times f$

$\alpha =\frac{5}{2}\times \frac{2}{4.3\times 10^{-2}}\times 0.02$

$\alpha =9.302\ rad/s^2$

(b)time taken to decrease its rotational speed by $21\ rad/s$

$t=\dfrac{\Delta \omega }{\alpha }$

$t=\dfrac{21}{9.302}$

$t=2.25\ s$

6 0

3 years ago

Name the type of circulation in a region where seasonal reversals in prevailing winds cause wet summers and relatively dry winte

Luden [163]

Answer:

A Monsoon Circulation

Explanation:

A Monsoon Circulation is the type of circulation in a region where seasonal reversals in prevailing winds cause wet summers and relatively dry winters.

4 0

4 years ago

A person of Mass 50kg is on a swing which has the speed 10m,/s at the lowest point of the motion the ropes of the swing are 2.5m

atroni [7]

Answer:

T = 2490 newton

Explanation:

Given that,

Mass of a person, m = 50 Kg

Speed of the swing at the lowest point, v = 10 m/s

Length of the rope, r = 2.5 m

Tension formula is given by

T = mg + ma N

where, T - Tension in the string

m - mass of the body

g - acceleration due to gravity

a - acceleration of the body

Since the person is swinging, the acceleration of the body is given by

a = v²/r m/s²

= 10/2.5 m/s²

a = 40 m/s²

Substituting in T

T = 50 Kg x 9.8 m/s² + 50 Kg X 40 m/s²

= 490 + 2000 Kg m/s²

T = 2490 newton

Therefore the tension in the rope is 2490 newton

8 0

4 years ago