1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Triss [41]
3 years ago
8

Which of the following is a science?

Physics
1 answer:
nikitadnepr [17]3 years ago
3 0

Answer:

astrology

Explanation:

eeeeeeeeeeeeeeeeee

You might be interested in
A man can jump 1.5 m on earth. calculate the approximate
Olegator [25]

Answer:

18 m

Explanation:

G = Gravitational constant

m = Mass of planet = \rho V

\rho = Density of planet

V = Volume of planet assuming it is a sphere = \dfrac{4}{3}\pi r^3

r = Radius of planet

Acceleration due to gravity on a planet is given by

g=\dfrac{Gm}{r^2}\\\Rightarrow g=\dfrac{G\rho V}{r^2}\\\Rightarrow g=\dfrac{G\rho \dfrac{4}{3}\pi r^3}{r^2}\\\Rightarrow g=\dfrac{4G\rho\pi r}{3}

So,

g\propto \rho r

Density of other planet = \rho_p=\dfrac{1}{4}\rho_e

Radius of other planet = r_p=\dfrac{1}{3}r_e

\dfrac{g_e}{g_p}=\dfrac{\rho_e r_e}{\rho_p r_p}\\\Rightarrow \dfrac{g_e}{g_p}=\dfrac{\rho_e r_e}{\dfrac{1}{4}\rho_e\times \dfrac{1}{3}r_e}\\\Rightarrow \dfrac{g_e}{g_p}=12\\\Rightarrow g_p=\dfrac{g_e}{12}\\\Rightarrow g_p=\dfrac{9.8}{12}

Since the person is jumping up the acceleration due to gravity will be negative.

From kinematic equations we have

v^2-u^2=2g_es\\\Rightarrow u^2=v^2-2g_es\\\Rightarrow u^2=0-2\times -9.8\times 1.5\\\Rightarrow u^2=2\times 9.8\times 1.5

On the other planet

v^2-u^2=2g_ps\\\Rightarrow s=\dfrac{v^2-u^2}{2g_p}\\\Rightarrow s=\dfrac{0-(2\times 9.8\times 1.5)}{2\times -\dfrac{9.8}{12}}\\\Rightarrow s=18\ \text{m}

The man can jump a height of 18 m on the other planet.

5 0
3 years ago
Suggest at least two reagents other than sodium borohydride that could be used to carry out the reduction of 9-fluorenone to 9-h
vampirchik [111]
For the answer to the question above asking to s<span>uggest at least two reagents other than sodium borohydride that could be used to carry out the reduction of 9-fluorenone to 9-hydroxyfluorene.</span>
 <span>1. LiAlH4 in ether 
2. H2/Pt
</span>I hope this helps
8 0
3 years ago
When you push an object, it pushes back with an equal and opposite force
Ksju [112]

Answer:

I would say false

Explanation:

Because friction slows it down which means when the object bounces back it will not have the same energy or force that was applied before.

5 0
2 years ago
Which of the following is the name of the process scientists use to gain
harkovskaia [24]

Answer:

b

Explanation:

.

6 0
3 years ago
A light-year is the distance that light travels in one year. The speed of light is 3.00 × 108 m/s. How many miles are there in o
Alinara [238K]

Answer:

(a) 5.88\times 10^{12}mi

Explanation:

We have given speed of light c=3\times 10^8m/sec

Given time = 1 year =365 days

We know that in 1 minute = 60 sec

1 hour = 60×60 = 3600 sec

In one day = 24 hour = 24×60×60=86400 sec

So in 365 days = 365×86400=3.1536\times 10^7sec

We know that distance = speed ×time=3.1536\times 10^7\times 3\times 10^8=9.46\times 10^{15}m

We have given that 1 mi = 1609 m

So 9.46\times 10^{15}m=\frac{9.46\times 10^{15}}{1609}=5.88\times 10^{12}miSo option (a) is correct

8 0
3 years ago
Other questions:
  • Is nuclear fission hybrid physics or geothermal phsics
    15·2 answers
  • What is the volume of a box with sides that measures 10 cm , 10 cm, 30 cm
    5·2 answers
  • Can someone please help me? If somebody pushes a cart with 4N of force and the cart moves a distance of 2 meters, how much work
    11·1 answer
  • What is the wavelength of an earthquake wave if it has a speed of 7km/s and a frequency of 8hz
    6·1 answer
  • A finite line of charge with linear charge density ????=3.35×10^−6 C/m and length L=0.588 m is located along the x ‑axis (from x
    14·1 answer
  • speed is the ratio of the distance an object moves to a. the direction the object moves. b. the amount of time needed to travel
    10·2 answers
  • when a seagull picks an oyster up into the sky and then lets it drop on the rocks below to open the shell; where is the oysters
    9·2 answers
  • What is the gravitational force of attraction between two asteroids in space, each with a mass of 50,000 kg, separated
    10·1 answer
  • Hunters velocity was 4.5 m/s. At the end of his race, his velocity was the same. Which best describes his Movement?
    8·1 answer
  • They did a flu shot from McKinnon at 45° to the horizontal with an initial speed of 25 m/s and that is positioned at a horizonta
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!