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
sladkih [1.3K]
3 years ago
15

Two small objects, with masses m and m, are originally a distance r apart, and the gravitational force on each one has magnitude

f. the second object has its mass changed to 2m, and the distance is changed to r/4. what is the magnitude of the new gravitational force?
Physics
2 answers:
elena-s [515]3 years ago
6 0
32f. That's because the force is directly proportional to the product of the masses and inversely proportional to the square of the distance. So you get 2•(1/1/4)^2=2•16=32
WINSTONCH [101]3 years ago
5 0

Answer:

New gravitational force, F' = 32 F

Explanation:

The gravitational force acting on two objects that are separated by a distance r between them is given by :

F=G\dfrac{mM}{r^2}

m is the mass of object 1

M is the mass of object 2

Now, the second object has its mass changed to 2m, and distance is changed to r/4. So, the gravitational force becomes :

F'=G\dfrac{m\times 2M}{(r/4)^2}

F'=32\times \dfrac{GmM}{r^2}

F'=32\times F

So, the magnitude of the new gravitational force is 32 times the previous force. Hence, this is the required solution.

You might be interested in
The velocity of sound on a particular day outside is 331 meters/second. What is the frequency of a tone if it has a wavelength o
N76 [4]

Frequency = (speed) / (wavelength)

Frequency = (331 m/s) / (0.6 m) = 551.7 Hz
3 0
3 years ago
The diagram below shows a flat mirror reflecting
sukhopar [10]

Answer:

TO MEASURE THE ANGLES OF RAYS

Explanation:

6 0
3 years ago
Read 2 more answers
Ignoring air resistance and the little friction from the plastic tube, the magnet was a freely-falling object in each trial. If
horsena [70]

Answer:

emf will also be 10 times less as compared to when it has fallen 40 \mathrm{m}

Explanation:

We know, from faraday's law-

e m f=-N \frac{\Delta \Phi}{\Delta T}

and \Phi=B . A

So, as the height increases the velocity with which it will cross the ring will also increase. (v=\sqrt{2 g h})

Given

\mathrm{V} 1(\text { Speed at } 40 \mathrm{m})=2 \mathrm{x} \mathrm{V} 2(\text { speed at } 10 \mathrm{m})

\sqrt{2 g h_{2}}=2 \times \sqrt{2 g h_{1}}=28.28 \mathrm{m} / \mathrm{s}

Now, from 40 \mathrm{cm}

V_{3}=\sqrt{2 g h_{3}}=\sqrt{2 \times 10 \times 0.4}=2.82 \mathrm{m} / \mathrm{s}

From equation a and b we see that velocity when dropped from 40 \mathrm{m} is 10 times greater when height is 40 \mathrm{cm} so, emf will also be 10 times less as compared to when it has fallen 40 \mathrm{m}

4 0
3 years ago
What are the effects of radiation on different surfaces such as an ice- covered lake, a forest, an ocean, or an asphalt road?
jarptica [38.1K]

Answer:

it could kill the fish in water

4 0
3 years ago
Read 2 more answers
Please help on this one somebody?
coldgirl [10]

7.5 x 10⁻¹¹m. An electromagnetic wave of frecuency 4.0 x 10¹⁸Hz has a wavelength of 7.5 x 10⁻¹¹m.

Wavelength is the distance traveled by a periodic disturbance that propagates through a medium in a certain time interval. The wavelength, also known as the space period, is the inverse of the frequency. The wavelength is usually represented by the Greek letter λ.

λ = v/f. Where v is the speed of propagation of the wave, and "f" is the frequency.

An electromagnetic wave has a frecuency of 4.0 x 10 ¹⁸Hz and the speed of light is 3.0 x 10⁸ m/s. So:

λ = (3.0 x 10⁸ m/s)/(4.0 x 10¹⁸ Hz)

λ = 7.5 x 10⁻¹¹m

8 0
3 years ago
Other questions:
  • Someone help me please...
    15·1 answer
  • When two atoms share electrons the bond is ______
    5·2 answers
  • With what speed does the can move immediately after the collision? Answer in units of m/s.
    10·1 answer
  • Spinning situations???
    13·2 answers
  • Explain how wind acts as an agent of erosion and deposition
    10·1 answer
  • In which situation would alley cropping be most useful for sustainable farming?(1 point)
    12·1 answer
  • Which wave shown has more energy?
    13·2 answers
  • A child rides a carousel with a radius of5.1 that rotates with a constant speed of2.2 m/s. Calculate the magnitude of the centri
    12·1 answer
  • What is the relationship between CO2 levels and temperature?
    13·1 answer
  • A car moving at a speed of 20 m/s has a kinetic energy of 200,000 J from that motion. What is the car's mass?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!