All categories

4 years ago

Uranus is unique among the planets in that it

Physics

2 answers:

riadik2000 [5.3K]4 years ago

5 0

A. orbits the Sun on its side

Anvisha [2.4K]4 years ago

3 0

The answer is A)

Here are some informations you should know:

Uranus is the seventh planet from the sun and the third giant gas planet. It rotates like all planets. But Uranus tilts far to one side. Instead of rotating in an upright position, Uranus rolls along like a bowling ball. Uranus also travels very slowly. Uranus has 27 moons. It takes 84 Earth days to complete one orbit.

You might be interested in

Astronomers have observed a small, massive object at the center of our Milky Way galaxy. A ring of material orbits this massive

vazorg [7]

Answer: Yes, it can be a single, ordinary star.

Explanation: To determine a mass of a star, we use the orbital speed formula, given by: v = $\sqrt{\frac{GM}{R} }$ , where

v is the speed;

G is a constant: G = 6.67* $10^{-11}$ $\frac{m^{3} }{kg.s^{2} }$

M is mass of a massive object;

R is the distance between the object orbiting and the massive object;

The formula can be rewritten as:

$M = \frac{v^{2}.R }{G}$

First, we change R from light years to km:

1km=1.057* $10^{-13}$

R= $\frac{15}{2*1.057.10^{-13} }$

Calculating mass:

M = $\frac{2^{2}*10^{4}*14.2*10^{13} }{6.67*10^{-11} }$

M = 4.25* $10^{28}$ kg

A solar mass is the standard unit of mass. It is approximately 2* $10^{30}$ Kg and can be used for comparison: A single star cannot be more than 50 solar masses.

50 solar masses = 50*2* $10^{30}$ = $10^{32}$ kg

Comparing the mass of the object with this parameter, we have

$\frac{10^{32} }{4.25.10^{28} }$ = 0.235. $10^{4}$ = 2.35. $10^{3}$

From this, we know that 50 solar masses is greater than the small, massive object found. So, this object can be a single, ordinary star.

3 0

3 years ago

Unpolarized light is incident onto three polarizers with their transmission axes oriented in such a way that the first and the l

Nikolay [14]

Answer:

I₃ = I₀ 0.395

Explanation:

Polarized light passing through a polarizer must comply with Malus's law

I = I₀ cos² θ

Before starting, let's analyze the angle between the polarizers, the second has the same angle with the first and the third, so it is at the midpoint

θ₂ = 39/2 = 19.5

now let's analyze the light that passes through each polarizer, as the incident is unpolarized through the first polarizer half the intensity comes out

I₁ = I₀ / 2

the second polarizer comes out

I₂ = I₁ cos² 19.5

I₂ = I₀ / 2 cos² 19.5

through the third polarized the intensity passes

I₃ = I₂ cos² 19.5

I₃ = (I₀ /2 cos² 19.5) cos² 19.5

I₃ = I₀ 0.395

7 0

3 years ago

A 75 kg box slides down a 25.0 degree ramp with an acceleration of 3.60 m/s^2.

Oxana [17]

Below is the solution:

angle = 25 deg
m = 75kg 
a = 3.6m/s/s 
F[x] = 75(9.8) sin(25) = 310.62N 
f[y] = 75(9.8) cos(25) = 666.1N 
f=ma 
310.62 - 666.1u = 75(3.6) 
666.1u = 310.62 -270= 40.62 
u = 0.061 

175(9.8) sin(25) - 175(9.8)(0.061)cos(25) = 175a 
175a = 724.79 -95.587= 629.203 
a = 3.595 m/s/s

5 0

4 years ago

Read 2 more answers

20) A 5 Kg watermelon is dropped off a 10 meter balcony. What will the watermelon's velocity be right before it hits the ground?

Ulleksa [173]

Answer:

14m/s

Explanation:

3 0

3 years ago

These four surfaces are opaque; that is they reflect or absorb certain rays of light determine the color

Cerrena [4.2K]

In the first figure, the surface absorbs all colors except for green light, which is reflected: so, the surface will appear as green to our eyes, because green is the only color which is reflected by that surface.

Similarly, in the second figure, the surface absorbs all colors except for blue, and so the surface will appear blue to our eyes.

In the third figure, the surface absorbs all colors, so it will appear black to our eyes (because no colors are reflected, and black=absence of colors).

In the fourth figure, all colors are reflected: this means the surface will appear white to our eyes (white= sum of all colors).

4 0

3 years ago