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
Yuki888 [10]
3 years ago
15

Two spheres of the same size and mass roll down an incline. Sphere A is hollow and Sphere B is solid with uniform density. Which

reaches the bottom of the incline first?
Make sure to EXPLAIN your answer!

(a) Sphere A
(b) Sphere B
(c) At the same time.
Physics
1 answer:
sweet [91]3 years ago
8 0
If the spheres are have to have the same and the same size, it is expected that they will have the same surface area. The only factor that affects the descent of the object through gravity on Earth is the surface area that is exposed to the resistance of air. For this case, it is expected that they will reach the bottom of the inclined plane together. The answer is C. 
You might be interested in
A convex mirror has a focal length of -10.8 cm. An object is placed 32.7 cm from the mirror's surface. Determine the image dista
KonstantinChe [14]

Answer:

-353.16

Explanation:

4 0
3 years ago
What is a natural resource used to make polypropylene?
Dmitry_Shevchenko [17]
<span>hydrocarbon (but im not 100% sure)</span>
4 0
3 years ago
Read 2 more answers
Astronomers discover an exoplanet, a planet obriting a star other than the Sun, that has an orbital period of 3.27 Earth years i
Naddik [55]

Answer:

  r = 3.787 10¹¹ m

Explanation:

We can solve this exercise using Newton's second law, where force is the force of universal attraction and centripetal acceleration

    F = ma

    G m M / r² = m a

The centripetal acceleration is given by

    a = v² / r

For the case of an orbit the speed circulates (velocity module is constant), let's use the relationship

    v = d / t

The distance traveled Esla orbits, in a circle the distance is

    d = 2 π r

Time in time to complete the orbit, called period

     v = 2π r / T

Let's replace

    G m M / r² = m a

    G M / r² = (2π r / T)² / r

    G M / r² = 4π² r / T²

    G M T² = 4π² r3

     r = ∛ (G M T² / 4π²)

Let's reduce the magnitudes to the SI system

     T = 3.27 and (365 d / 1 y) (24 h / 1 day) (3600s / 1h)

     T = 1.03 10⁸ s

Let's calculate

      r = ∛[6.67 10⁻¹¹ 3.03 10³⁰ (1.03 10⁸) 2) / 4π²2]

      r = ∛ (21.44 10³⁵ / 39.478)

      r = ∛(0.0543087 10 36)

      r = 0.3787 10¹² m

      r = 3.787 10¹¹ m

7 0
3 years ago
Describe some tests that could be done to determine what an unknown substance is.
natima [27]

Answer:

by finding melting and boiling points

Explanation:

3 0
3 years ago
Read 2 more answers
How to reduce friction of moving a heavy load .
Vilka [71]
● Use lubricants such as oil.
● Place the load on a piece of cloth as it can ease the friction
● Place the load on a cart with wheels so it can be converted to rolling friction and can be pushed easily.
● Place the load on an inclined plane
3 0
3 years ago
Other questions:
  • How much work, in N*m, is done when a 10.0 N force moves an object 2.5 m?
    9·1 answer
  • What are 2 important statements about physical properties?
    9·1 answer
  • What type of pressure is transmitted by fluids
    11·1 answer
  • What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?
    8·2 answers
  • You should always wear your seatbelt just in case the car comes to an abrupt stop. The seatbelt will hold you in place so that y
    8·2 answers
  • What are AR,L,K in the periodic table
    12·2 answers
  • Which term describes an advantage of wind energy?
    7·2 answers
  • weight of Ali is 500andN.he is standing on the ground with an area of 0.025 m^2 area .we can find pressure under his feet. what
    10·1 answer
  • Two window washers, Bob and Joe, are on a 3.00 m long, 395 N scaffold supported by two cables attached to its ends. Bob weighs 8
    6·1 answer
  • A car travels from rest to 85 m/s and covers 150 meters. How LONG did<br> that take? *
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!