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
svlad2 [7]
3 years ago
5

Tidal forces are gravitational forces exerted on different parts of a body by a second body. Their effects are particularly visi

ble on the earth's surface in the form of tides. To understand the origin of tidal forces, consider the earth-moon system to consist of two spherical bodies, each with a spherical mass distribution. Let re be the radius of the earth, m be the mass of the moon, and G be the gravitational constant.
(a) Let r denote the distance between the center of the earth and the center of the moon. What is the magnitude of the acceleration ae of the earth due to the gravitational pull of the moon? Express your answer in terms of G, m, and r.
(b) Since the gravitational force between two bodies decreases with distance, the acceleration a_near experienced by a unit mass located at the point on the earth's surface closest to the moon is slightly different from the acceleration a_far experienced by a unit mass located at the point on the earth's surface farthest from the moon. Give a general expression for the quantity a_near - a_far. Express your answer in terms of G, m, r, and re.
Physics
1 answer:
laiz [17]3 years ago
6 0

Answer:

Explanation:

radius of earth = re

mass of the noon = m

mass of the earth = E

distance between earth and moon = r

acceleration of earth ae

force on earth = GMm / r²

acceleration of the earth

ae = force / mass

= GMm / (r² x M )

= Gm / r²

b ) The point on the earth nearest to moon will be at a distance of r - re

a_near = Gm / ( r - re)²

The point farthest on the earth  to moon will be at a distance of r + re

a_ far = Gm / ( r + re )²

You might be interested in
A particle with charge Q and mass M has instantaneous speed u1 when it is at a position where the electric potential is V1. At a
Mariulka [41]

Answer: A

Explanation:

4 0
2 years ago
a police car drives with a constant speed of 24 miles per hour .how long will it take to travela distance of 72 miles​
leonid [27]

This problem is an exact copy of the other one that I just answered for you, about Grace driving 224 miles.  

Only the numbers are different, but the way to solve it is exactly the same.

6 0
2 years ago
Chlorophylls absorb most light in which colors of the visible range?
maxonik [38]

Chlorophyll absorbs light in the red and the blue regions of the visible light spectrum.

7 0
3 years ago
Football player A has a mass of 210 pounds and is running at a rate of 5.0 mi/hr. He collides with player B. Player B has a mass
Naddika [18.5K]

The equation for momentum is p = mv where p is the omentum, m is the mass and v is the velocity. Calculating the momentum for each football player, player A will have a momentum of 1050 lb-mi/h and player B will have a momentum of 570 lb-mi/h. Therefore, momentum of player A is greater than that of player B.

6 0
3 years ago
Read 2 more answers
Refraction:
Novay_Z [31]
Refraction is caused by any wave crossing the boundary out of one substance and into another one. The two different substances may be no more than two parcels of air at different temperatures.
4 0
3 years ago
Other questions:
  • A radiation worker is subject to a dose of 200 mrad/h of maximum QF neutrons for one 40 h work week. How many times the yearly a
    5·1 answer
  • The definition of theory says that a it is a hypothesis or group hypotheses. In your own words, explain why a theory is also a h
    12·2 answers
  • The formula for sodium sulfide is na2s what does it mean
    8·1 answer
  • A 214 g aluminum cup holds and is in thermal equilibrium with 892 g of water at 76°C. The combination of cup and water is cooled
    13·2 answers
  • Points A, B, and C are at the corners of an equilateral triangle of side 8 m. Equal positive charges of 4 mu or micro CC are at
    11·1 answer
  • An electron is travelling East through a magnetic field directed South. In which direction is the force on the electron?
    15·1 answer
  • 9) Which is a difference between plant and animal cells?
    10·1 answer
  • A horizontal disk rotates about a vertical axis through its center. Point P is midway between the center and the rim of the disk
    5·1 answer
  • (1 point) Unknown resistor in voltage divider Suppose that a power supply is connected across two resistors R1 and R2 that are c
    8·1 answer
  • What is the frequency of a raido wave with a wavelength of 1.0 mm?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!