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
Sati [7]
3 years ago
15

Earth exerts a gravitational force on the moon. why doesn’t the force of gravity pull the moon into the earth?

Physics
1 answer:
Fittoniya [83]3 years ago
5 0
The moon is orbiting the Earth so the moon's acceleration is towards the Earth but its velocity is in tangent to the Earth. Therefore the moon is in a constant free fall around the Earth instead of getting pulled toward Earth it orbits around it.
You might be interested in
A meteor is approaching Earth. Which statement about its motion is true?
ankoles [38]

the answer is b trust me its b

8 0
3 years ago
The fact that the total amount of energy in a system remains constant is a(n) experiment. theory. hypothesis. Or law.
Murrr4er [49]

Answer:

<h3>law</h3>

Explanation:

The law of conservation of energy states that the total amount of energy in a system remains constant.

8 0
3 years ago
If this speed is based on what would be safe in wet weather, estimate the radius of curvature for a curve marked 70 km/h . The c
olganol [36]

as it is given that curved marked the speed as v = 70 km/h

so we will first convert the speed into m/s

v = 70 km/h = 19.44 m/s

now we know that here friction force will provide centripetal force

F_c = F_f

As we know that centripetal force is given as

F_c = \frac{mv^2}{R}

\frac{mv^2}{R} = \mu_k mg

\frac{v^2}{R} = \mu_k g

v^2 = \mu_k R * g

19.44^2 = 0.5* R * 9.8

378 = 4.9 * R

R = 77.1 m

3 0
4 years ago
Read 2 more answers
Each wheel of a 320 kg motorcycle is 52 cm in diameter and has rotational inertia 2.1 kg m2 . The cycle and its 75 kg rider are
Amiraneli [1.4K]

Answer:

The value is  h  = 32.91 \  m

Explanation:

From the question we are told that

    The diameter of each wheel is  d =  52 \ cm  =  0.52 \  m

    The mass of the motorcycle is  m  =  320 \ kg

    The rotational kinetic inertia is  I  =  2.1 \  kg \  m^2

    The  mass of the  rider is  m_r =  75 \ kg

     The  velocity is  v  =  85 \  km/hr = 23.61 \  m/s

      Generally the radius of the wheel is mathematically represented as

      r =  \frac{d}{2}

=>     r =  \frac{0.52}{2}

=>    r =  0.26 \  m

Generally from the law of energy conservation

     Potential energy  attained  by  system(motorcycle and rider )  =  Kinetic  energy of the system  +  rotational kinetic energy of  both wheels of the motorcycle

=>  Mgh  =  \frac{1}{2}  Mv^2  +   \frac{1}{2}  Iw^2  +  \frac{1}{2}  Iw^2

=>    Mgh  =  \frac{1}{2}  *  Mv^2  +  Iw^2

Here  w is the angular velocity which is mathematically represented as

     w =  \frac{v }{r }

So

    Mgh  =  \frac{1}{2}  *  Mv^2  +  I \frac{v}{r} ^2

Here M  =  m_r +  m

         M  =  320 + 75

          M  = 395 \  kg

395 *  9.8 *  h  =   0.5    *   395 *  (23.61)^2 +  2.1  *[\frac{ 23.61}{ 0.26} ] ^2

=>   h  = 32.91 \  m

   

7 0
4 years ago
55. (III) A uniform circular plate of radius 2R has a circular hole of radius R cut out of it. The center of the smaller circle
Aleksandr [31]

Answer:

P = 0.27R from the center

Explanation:

Given,

The radius of the uniform circular plate, R = 2R

The radius of the hole, r = R

The center of the smaller circle from the center is, d = 0.8R

The center of mass of a circular disc with a hole in it given by the formula

                               P = dr²/R² - r²

Where P is the distance from the center of mass located in the line joining the two centers opposite to the hole.

Substituting the given values in the above equation,

                               P = 0.8R x R² / 4R² - R²

                                  = 0.27R³/R²

                                  = 0.27R

Hence the center of mass of plate is at a distant  P = 0.27R from the center

6 0
3 years ago
Other questions:
  • A singly charged ion of 7Li (an isotope of lithium which lost only one electron) has a mass of 1.16 ×10^-26 kg. It is accelerate
    6·1 answer
  • Explain why color is a measure of a star’s temperature.
    5·1 answer
  • Which layer of the sun is seen during a total solar eclipse?
    13·1 answer
  • How do you find a total resistance in physical science
    12·1 answer
  • The lungs, nose, and trachea are organs of the respiratory system. Which best describes these organs?
    13·2 answers
  • Sound waves, water waves, and light waves are all alike in that they all
    13·1 answer
  • What happens to light that strikes a piece of glass
    12·1 answer
  • a 10 kg solid disk of radius 0.5 m is rotated about an axis through its center.the disk accelerates from rest to angular speed o
    13·1 answer
  • How is Forrest related to acceleration and gravity
    13·1 answer
  • Wilbur ran 1-kilometer. Then he ran 500 meters. How many meters did Wilbur run all together?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!