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
Charra [1.4K]
2 years ago
14

At the surface of the moon, the acceleration due to the gravity of the moon is x. At a distance from the center of the moon equa

l to four times the radius of the moon, the acceleration due to the gravity of the moon is _____.
Physics
1 answer:
krok68 [10]2 years ago
7 0

Answer:

Gravity at a distance of 4R will be reduced to 1/16 th.

Explanation:

Given:

At the surface of the moon, the acceleration due to the gravity of the moon is x.

We have to find the gravity a t a distance of 4 times from the center of the moon.

Let the radius of the moon be "R".

And

The value of acceleration due to gravity is g_m .

Formula:

⇒ g_m=\frac{GM}{R^2}   ...where M is the mass of the moon.

Now

Gravity of the moon at the its surface:

⇒ g_m=\frac{GM}{R^2}    ...equation (i)

Gravity of the moon at a distance of  4R:

⇒ g_m_1=\frac{GM}{(4R)^2}

⇒ g_m_1=\frac{GM}{16R^2}   ...equation (ii)

Dividing equation (i) with (ii) to find the relationship between the two.

⇒ \frac{g_m_1}{g_m} =\frac{GM}{16R^2}\times \frac{R^2}{GM}

⇒ \frac{g_m_1}{g_m} =\frac{1}{16}

⇒ g_m_1 =g_m(\frac{1}{16})

⇒ g_m_1 =x(\frac{1}{16})    ...as gm=x at the surface.

So,

We can say that the gravity at a distance of 4R will be reduced to 1/16 th.

You might be interested in
The label has been scratched off a tuning fork and you need to know its frequency. From its size, you suspect that it is somewhe
bonufazy [111]

Answer:

255 Hz

Explanation:

With 5 beats per second with the 250 Hz fork, we know the unknown fork is either 250 - 5 = 245Hz or 250 + 5 = 255 Hz

With 15 beats per second with the 270 Hz fork, we know the unknown fork is either 270 - 15 = 255Hz or 270 + 15 = 285 Hz (most people would have a hard time discerning 15 beats per second... 5 per second is hard enough)

As 255 is the common frequency, it is the one selected.

3 0
2 years ago
A luge and its rider, with a total mass of 85 kg, emerge from adownhill track onto a horizontal straight track with an initial s
Verdich [7]

<span>(1)   </span>Through the Second Law of motion, the equation  for Force is:

                                 F = m x a

Where m is mass and a is acceleration (deceleration)

 

<span>(2)   </span>Distance is calculated through the equation,

                             D = Vi^2 / 2a

Where Vi is initial velocity

<span>(3)   </span>Work is calculated through the equation,

                          W = F x D

 

Substituting the known values,

Part A:

<span>(1)   </span>  F = (85 kg)(2 m/s^2) = 170 N

<span>(2)   </span>  D = (37 m/s)^2 / (2)(2 m/s^2)  = 9.25 m

<span>(3)   </span>  W = (170 N)(9.25 m) = 1572.5 J

 

Part B:

<span>(1)   </span> F = (85 kg)(4 m/s^2) = 340 N

<span>(2)   </span>D = (37 m/s)^2 / (2)(4 m/s^2) = 4.625 m

<span>(3)   </span><span> W = (340 N)(4.625 m) = 1572.5 J</span>

7 0
3 years ago
How do units of work and power compare
timurjin [86]

Answer:

Jule

Explanation:

They each have the same units which is jule

3 0
3 years ago
500 g of water at 90°C is cooled in a freezer. If all the water is converted to ice, what is the amount of heat released when th
KATRIN_1 [288]

Answer:

356 000 J

Explanation:

Total Energy released

= Energy released when water cools to 0 + Energy released when water is converted to ice at 0

= mcT + ml

= (0.5)(4200)(90-0) + (0.5)(334 000)

= 189 000 J + 167 000 J

= <u>3</u><u>5</u><u>6</u><u> </u><u>0</u><u>0</u><u>0</u><u> </u><u>J</u>

4 0
3 years ago
12. A las 10 de la mañana Elena sale a 100 Km/h de una ciudad A con dirección a Madrid. A la misma hora sale Javier desde otra c
Klio2033 [76]

Answer:

a) t = 3.3 [h]

b ) Hora = 13:18 o 1:18 [pm]

c) x = 327.79 [km/h] (Elena)

x = 196.6 [km] (Javier)

Explanation:

Para poder solucionar este problema debemos hacer un planteamiento inicial de ubicacion de las ciudades, este planteamiento nos ayudara a entender el problema de una manera mas facil.

Tenemos las ciudades A & B y la ciudad de Madrid que esta a una distancia x con respecto de B, (ver esquema adjunto).

De manera logica debemos deducir que la Ciudad A debe estar mas lejos de Madrid que la ciudad B de la misma Madrid, ya que en caso contrario Javier nunca alcanzara a Elena, ya que Elena va mas rapido que Javier.

a) Ahora debemos de utilizar la siguiene ecuacion de la cinematica, cuando los cuerpos se mueven a velocidad constante.

x=x_{o}+v*t

Donde:

x -xo = Distancia entre el punto inicial y punto final.

v = velocidad [m/s]

t = tiempo [s]

Debemos convertir las velocidades de kilometros por hora a metros por segundo.

100 [\frac{km}{h} ]*1[\frac{h}{3600s}]*1000[\frac{m}{1km} ] = 27.77[m/s]\\60[\frac{km}{h} ]*1[\frac{h}{3600s}]*1000[\frac{m}{1km} ] = 16.66[m/s]

Seguidamente formulamos una ecuacion por cada movimiento, luego debemos igualar estas ecuaciones en funcion de la variable x que sera el punto donde se encuentren ambas personas.

<u>Para Elena</u>

(132000+x) = 27.77*t\\x = 27.77*t - 132000

<u>Para Javier</u>

<u />x - xo = 16.66*t\\xo = 0\\x = 16.66*t<u />

Igualamos las variables x de ambas ecuaciones.

16.66*t = 27.77*t -132000\\27.77*t - 16.66*t = 132000\\11.11*t = 132000\\t = 11880.83 [s] = 3.3 [h]

b) La hora facilmente se puede encontrar sumando el tiempo con las 10:00am

hora = 10 + 3 = 13 [hrs]

La parte decimal debe convertirse a tiempo.

0.3 [hr]*60[\frac{min}{1hr} ]= 18 min

Hora = 13:18 o 1:18 [pm]

c) Para encontrar estas distancias utilizamos el tiempo encontrado en el item a.

<u>Para Elena</u>

x = v*t\\x = 27.77*11800.83 = 327791.6 [m] = 327.79 [km]\\

<u>Para Javier</u>

<u />x = v*t\\x = 16.66*11800.83 = 196601.8 [m] = 196.6 [km]<u />

6 0
2 years ago
Other questions:
  • Is it possible to put a distance versus time graph to be universal go mine
    8·1 answer
  • Where is the epicenter of the earthquake located?
    11·1 answer
  • An electron enters a region of space containing a uniform 0.0000193-T magnetic field. Its speed is 121 m/s and it enters perpend
    12·1 answer
  • ____ is the detection of halo objects like brown dwarfs when their gravitational fields concentrate the light of distant sources
    9·1 answer
  • A soccer player kicks a ball with initial velocity of 10m/s at an angle of 30 degrees above the horizontal.....what is the magni
    12·1 answer
  • An electric lamp consumes 60W at 220 volts. How many dry cells of 1.5 V and internal resistance 1 Ohm are required to glow the l
    8·1 answer
  • A big red fish with a mass of 20 kg swims with a velocity of 2 m/s toward a small, stationary green fish which has a mass of 10
    13·1 answer
  • What is accerlation ?​
    13·2 answers
  • A car travels up a hill at a constant speed of 44 km/h and returns down the hill at a constant speed of 74 km/h. Calculate the a
    7·1 answer
  • To investigate how the vertical height and horizontal distance travelled by a table tennis ball is affected by the surface with
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!