The magnitude of the gravitational acceleration at the surface of a planet of mass M and radius R is g. What is the magnitude of the gravitational acceleration at the surface of a planet of mass 2M and radius 2R?​

Answers

Answer 1
2M/4R2=.5M/R2= .0.5 g

Related Questions

Compare the density of a 1,000,000 kg iceberg to that of a 10 g ice cube taken from the
iceberg. Explain your answer.

ANYONE ASAPP ITS SO IMPORTANT PLSSS

Answers

Answer:

The density of the 1,000,000 kg iceberg = The density of the 10 g iceberg

Explanation:

The given quantities of iceberg that will be the basis of the comparison of the densities of the iceberg;

The mass of the iceberg = 1,000,000 kg

The mass of the ice cube taken from the iceberg = 10 g

The density of a substance, is the measure of the mass of the substance per volume of the substance, it is a constant for the substance

[tex]Density = \dfrac{Mass}{Volume}[/tex]

For the iceberg, the density of the iceberg is the property that indicates the volume occupied by a given mass of the iceberg

Because of density, we can estimate that the volume occupied by a 1,000 kg iceberg is 10 times the volume occupied by a 100 kg iceberg

We can write

The density of the 100 kg iceberg = 100 kg/(x m³)

The density of the 1,000 kg iceberg = 1,000 kg/(10 × x m³) = 100 kg/(x m³)

Therefore, the density of the 100 kg iceberg = The density of the 1,000 kg iceberg

Similarly,

The density of the 1,000,000 kg iceberg = The density of the 10 g iceberg because the 10 g iceberg was obtained from the 1,000,000 kg iceberg, and therefore, they have the same density.

The amount of kinetic energy an object has depends on which feature of the object?

its motion
its position
its gravity
its height

Answers

Answer: its motion  

Explanation: Potential energy is stored energy when an object is without motion, kinetic energy is the energy when a object is in motion.

Answer:

motion

Explanation:

edge 2021 btw miraculous is a great show :)

How much force is required to stretch a spring 12 cm, if the spring constant is 55 N/m?

Answers

Answer:

Explanation:

F = -kΔx

Since the spring constant is given in N/m, we need to convert the stretch to meters as well.

12 cm = .12 m

Now we can solve the problem:]

F = -55(-.12) so

F = 6.6N

The force required to stretch the spring is 6.6 N

Data obtained from the question Extention (e) = 12 cm = 12 / 100 = 0.12 mSpring constant (K) = 55 N/mForce (F) =?

How to determine the force

The force acting on a spring is given by:

Force (F) = spring constant (K) × Extention (e)

F = Ke

With the above formula, we can obtain the force required to stretch the spring as follow:

F = Ke

F = 55 × 0.12

F = 6.6 N

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U can choose any scenario just answer please :)))

Answers

Answer:

A roller coaster:

The first law states that an object either remains at rest or continues to move at a constant velocity, unless it is acted upon by an external force.

Hope this helps!

Answer:

This

Explanation:

First Law: Newtons first law of motion explains what happens in a car crash because it basically states that the passenger will continue to travel at the same velocity until an unbalanced force acts on he or she. The force that will act upon he or she would be the window, so you should always wear a seat belt!

Second Law: In other words, it states that the force that is applied in the crash is proportional to mass of impacting cars. This means that the bigger the force of impacting cars, the bigger the force applied, which implies a greater destruction.

Third law: Newton's Laws Applied to Collisions. Newton's third law of motion is naturally applied to collisions between two objects. In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction.

Explain how you would deal with these social changes you have I identified to counter any negative impact on your success as a student

Answers

Explanation:

It is necessary that the student is always focused on his / her greatest goal in his / her academic life. There are many students who aspire to enter a certain college, or to pursue a particular professional career. So my advice for facing social changes that can have a negative impact on your success as a student is to plan your future goals and ambitions, always be up to date with the demands of society, seek help if necessary and always dedicate yourself to the maximum in your studies.

To deal with the social changes that may result in negative impact, the student must be advised, encouraged and also seek psychological help if necessary.

What are social changes?

Social change involves alteration or deviations of the social order of a student.

The negative impact of social changesPoor academic performanceDepressionAggressivenessPoor concentration

To deal with the social changes that may result in negative impact, the student must be advised, encouraged and also seek psychological help if necessary.

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What is happening to the ATOMS INSIDE of a magnet that gives the

material its magnetic properties?

Answers

Answer:

The atoms are aligned in a particular direction

Explanation:

The atoms become aligned in a particular direction in regions called domains, thus resulting in an overall resultant magnetism due to the spin of the electrons.

Which task would a colorectal surgeon perform?
1. analyzing patients' diets for food sensitivities
2. prescribing drugs to treat ulcers
3. correcting structural problems of the jaw
4. removing tumors in the large intestine

Answers

answer: 4. removing tumors in the large intestine

Answer:

d

Explanation:

Which one of the following items contains matter in the plasma state?



Stars



liquid water



ice cubes

Answers

Answer:

Stars i think

Explanation:

How many calories are released when 6 grams of 100°C steam turns to 0°C ice?

Answers

Answer: 4276.2 calories

Explanation:

Given

mass of steam is 6 gm at [tex]100^{\circ}C[/tex]

Conversion of steam to ice involves

steam to water at [tex]100^{\circ}C[/tex]water at [tex]100^{\circ}C[/tex] to water at [tex]0^{\circ}C[/tex]water to the ice at [tex]0^{\circ}C[/tex]

Calories released during the conversion of steam to water at [tex]100^{\circ}C[/tex]

[tex]E_1=mL_v\quad [L_v=\text{latent heat of vaporisation}]\\E_1=6\times 533=3198\ cal.[/tex]

Calories released during the conversion of water at [tex]100^{\circ}C[/tex] to water at [tex]0^{\circ}C[/tex]

[tex]E_2=mc(\Delta T)\quad [c=\text{specific heat of water,}1\ cal./gm.^{\circ}C]\\E_2=6\times 1\times 100=600\ cal.[/tex]

Calories released during the conversion of water to the ice at [tex]0^{\circ}C[/tex]

[tex]E_3=mL_f\quad [L_f=\text{latent heat of fusion}]\\E_3=6\times 79.7=478.2\ cal.[/tex]

The total energy released is

[tex]E=E_1+E_2+E_3\\E=3198+600+478.2=4276.2\ cal.[/tex]

If the average human has a density of 1.01g/cm3
and the density of the Dead Sea is 1.23g/mL, why
can't we swim in the dead sea? Must have the
words (Mass, volume, and density)

Answers

Answer:The Dead Sea water has a density of 1.24 kg/litre

Explanation:

which makes swimming similar to floating.

Can someone help me please

Answers

Answer:

b

Explanation:

Answer:i think its the 3rd one

Explanation:

Which of the following occurs when the fight-or-flight response is triggered?

Answers

Answer:

A  or B

Explanation:

The autonomic nervous system has two components, the sympathetic nervous system and the parasympathetic nervous system. The sympathetic nervous system functions like a gas pedal in a car. It triggers the fight-or-flight response, providing the body with a burst of energy so that it can respond to perceived dangers.

Gravity attracts an object to
A.
Earth's magnetic poles
B.
Earth's surface
C.
Earth's equator
D.
Earth's center

Answers

Answer:

D

Explanation:

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Answers

I've attached a picture of the 3 electromagnets options below the main electromagnet.

Answer:

The third electromagnet is correct.

Explanation:

From the attached image, in the electromagnet above the 3, we can see that the positive terminal comes before the negative terminal at the bottom left.

Now, when it is reversed, they will both move to the bottom right but their position will change with the negative coming before the positive.

Also, the electric current arrow inside the circle points in the north west direction but when it is reversed, it will point in the north east direction.

Also, the winded coil over the pole remains the same.

Thus, the only option that fulfills this reversed positions is the 3rd electromagnet

Answer:

Explanation:

Its B and C, I got a 5/5 on my test with these answers.

What happens to a digital signal sent using electromagnetic waves as it travels farther from its source?
A. The signal becomes weaker and more difficult to detect
B. The signal slows down and becomes distorted
C. The signal needs to be amplified before it can be detected
D. The digital signal changes to an analog signal.​

Answers

Answer:

did you find the answer please answer back

Answer:a

Explanation:ap ex verified

Sample of gas occupies 725 mL at 23°C 920 MMHG find the volume of the gas at standard temperature and pressure

Answers

Answer:

V2=809.44 mL

Explanation:

If ans is correct give a comment or ask for explanation with me .

define 1 unit electricity​

Answers

Answer:

A unit is represented in kWH or Kilowatt Hour. This is the actual electricity or energy used. If you use 1000 Watts or 1 Kilowatt of power for 1 hour then you consume 1 unit or 1 Kilowatt-Hour (kWh) of electricity.

A 150 g pinball rolls towards a springloaded launching rod with a velocity of 2.0 m/s to the west. The launching rod strikes the pinball and causes it to move in the opposite direction with a velocity of 10.0 m/s. What impulse was delivered to the pinball by the launcher?

Answers

Answer:

  I = 1.8 N s,  it is directed towards the right  

Explanation:

For this exercise we use the relationship between momentum and moment

         I = Δp

         F t = p_f - p₀

in this case the initial velocity is v₀ = - 2,0 m / s and final velocity v_f = 10,0 m / s, we assume the positive right direction

          I = m (v_f - v₀)

let's calculate

         I = 0.150 (10.0 - (-2.0))

         I = 0.150 (10 + 2)

         I = 1.8 N s

as the impulse is positive it is directed towards the right

Which human activity causes the most erosion?
А
building a bridge over a river

B
cutting down trees for lumber

С
building a dam in a stream

D
planting crops in a field

Answers

Answer:

B

Explanation:

A meteorite is DIFFERENT from a comet mainly because it
A) has a tail of ice and dust.
B) enters the Earth’s atmosphere.
C) has a nucleus made of snow and rock.
Eliminate
D) is found in orbit between Mars and Jupiter.

Answers

B) enter the Earths atmosphere

What happens when an object is moved against gravity, such as rolling a toy car up a
ramp?
a. Potential energy does not change
b. Potential energy decreases as it is transformed into kinetic energy
c. Kinetic energy does not change
d. Kinetic energy is transformed into potential energy

Answers

Answer:

gravitational force remain constant

we have that from the Question, it can be said that  

What happens when an object is moved against gravity, such as rolling a toy car up is

Kinetic energy is transformed into potential energyOpion D

From the Question we are told

What happens when an object is moved against gravity, such as rolling a toy car up

a. Potential energy does not change

b. Potential energy decreases as it is transformed into kinetic energy

c. Kinetic energy does not change

d. Kinetic energy is transformed into potential energy

Generally the equation for  Kinetic energy is mathematically given as

K.E=1/2mv^2

Generally the equation for  Potential energy is mathematically given as

P.E=mgh

Therefore

With increase in height of the car Kinetic energy is transformed into potential energy as g remains constant

Hence

What happens when an object is moved against gravity, such as rolling a toy car up is

Kinetic energy is transformed into potential energyOpion D

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Which person below is likely to have better health?
A. Jenna, who is optimistic about life
B. Albert, who thinks that events in his life are not in his control
C. Peter, who is depressed
D. Claire, who blames everyone else for her circumstances
SUBMIT

Answers

A. Jenna because an optimistic person always has a healthier look in life!

Jenna, who is optimistic about life, is likely to have better health. Hence, option (A) is correct.

What is mental health?

Mental health affects cognition, perception, and behavior and includes emotional, psychological, and social well-being. It also affects how someone responds to stress, interacts with others, and makes decisions.

Subjective well-being, perceived self-efficacy, autonomy, competence, generational reliance, and self-actualization of one's intellectual and emotional potential are only a few examples of what is considered to be mental health.

The ability to enjoy life and strike a balance between daily activities and endeavors to develop psychological resilience may be considered a sign of mental health from the viewpoints of positive psychology or holistic approaches.

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state two other ways in which evaporation is different from boiling​

Answers

evaporation is slower, occurs only from the surface of the liquid, does not produce bubbles, and leads to cooling. boiling is faster, can occur throughout the liquid, produces lots of bubbles, does not result in cooling

Calculate the potential energy of a rock with a mass of 55 kg as it sits on a cliff that is 27 m high

Answers

Answer:

The potential energy is zero since the rock isn't moving.

explain the differences between pitch and loudness and what are they connected to?

Answers

Answer:

Loudness and pitch are distinct properties of sound. Loudness is related to the amplitude of the sound wave; pitch is related to its frequency

Explanation:

A wedge with a mechanical advantage of 0.78 is used to raise a house corner from its foundation. If the output force is 7500 N, what is the input force?

Answers

Therefore, the input force is 9615.38N

Input force calculation.

T0 determine the input force needed  0.78 to raise a house corner from its foundation we need to use the formula for mechanical advantage.

Mechanical advantage = output force/ input force

Given the output force  to be 7500N and the mechanical advantage 0.78.

We can rearrange the the formula

IF = 7500/0.78

IF = 9615.38N

Therefore, the input force is 9615.38N

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is an object that has 3 electrons and 5 protons a positive charge?

Answers

Answer:

Hello, Yes i believe it would be a positive charge considering electrons have a negative charge while protons have a positive charge.

Explanation:

use atoms and molecules in a sentence

Answers

Answer:

An atom is the smallest part of an element by itself, while molecules are built of multiple atoms.

A softball player is running at 4.88 m/sec when she slides into second base coming to a stop in .872 seconds. How far did she slide, and what was her acceleration?​

Answers

Answer:

d=v1t - .5at^2

d=4.88 x .872 - 0.5 x (4.88/0.872) x 0.872^2

d=4.255 - 2.12

d= 2.135m

Explanation:

acceleration is negative because she is slowing down.

A 95 kg falling trunk strikes the ground with a speed of 40 m/s. Assuming that there is no loss of energy due to air resistance, what is the height from which the trunk falls?

Answers

Answer:

80 m or 81.3 m

Explanation:

Initially it had no velocity(as at rest). Let the height be h

Using conservation of energy:

Initial KE + PE = final KE + PE

(1/2) m(0)² + mgh = (1/2) m(40)² + mg(0)

mgh = (1/2) m (1600)

2gh = 16000

h = 1600/(2*10) {for g = 10}

h = 80

80 For g = 9.8, h = 81.3 m

Using Newton's eqⁿ of motion:

v² = u² + 2aS

40² = 0² + 2(g)S

1600/2g = S

For g = 10, S = 80 m

g = 9.8, S = 81.33 m

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