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
iris [78.8K]
3 years ago
12

Which of Newton’s laws, when combined algebraically with his law of universal gravitation, can be used to calculate Earth’s mass

?
A) first
B) second
C) third
Physics
1 answer:
andriy [413]3 years ago
4 0

B) second law of motion which states that F=ma

You might be interested in
HELP HELP HELP ME!!!
zzz [600]
I believe the answer is C. Hope this helps!!

7 0
3 years ago
In order to go in a circle at a constant speed an object needs
maxonik [38]

Answer:

So for an object moving in a circle, there must be an inward force acting upon it in order to cause its inward acceleration. This is sometimes referred to as the centripetal force requirement. The word centripetal (not to be confused with the F-word centrifugal) means center seeking.

Explanation:

hope this helps

3 0
2 years ago
you push a sled of mass 15 kg across the snow with a force of 180 N for a distance of 2.5 m. There is no friction. if the sled s
Oxana [17]
<span>7.7 m/s First, determine the acceleration you subject the sled to. You have a mass of 15 kg being subjected to a force of 180 N, so 180 N / 15 kg = 180 (kg m)/s^2 / 15 kg = 12 m/s^2 Now determine how long you pushed it. For constant acceleration the equation is d = 0.5 A T^2 Substitute the known values getting, 2.5 m = 0.5 12 m/s^2 T^2 2.5 m = 6 m/s^2 T^2 Solve for T 2.5 m = 6 m/s^2 T^2 0.41667 s^2 = T^2 0.645497224 s = T Now to get the velocity, multiply the time by the acceleration, giving 0.645497224 s * 12 m/s^2 = 7.745966692 m/s After rounding to 2 significant figures, you get 7.7 m/s</span>
5 0
3 years ago
Which stage follows the red giant stage of star development, if the star is a high-mass star? 
Anestetic [448]
I believe it's a supernova 
3 0
3 years ago
A particular spiral galaxy can be approximated by a thin disk-like volume 62 Thousand Light Years in radius and 7 Hundred Light
SVETLANKA909090 [29]

Answer:

Approximate linear dimension is 2 light years.

Explanation:

Radius of the spiral galaxy r = 62000 LY

Thickness of the galaxy h = 700 LY

Volume of the galaxy = πr²h

                                   = (3.14)(62000)²(700)

                                   = (3.14)(62)²(7)(10)⁸

                                   = 84568×10⁸

                                   = 8.45\times 10^{12} (LY)³

Since galaxy contains number of stars = 1078 billion stars ≈ 1.078\times 10^{12}

Now volume covered by each star of the galaxy = \frac{\text{Total volume of the galaxy}}{\text{Number of stars}}

= \frac{8.45\times 10^{12} }{1.078\times 10^{12}}

= 7.839 Light Years

Now the linear dimension across the volume

= (\text{Average volume per star})^{\frac{1}{3}}

= (7.839)^{\frac{1}{3}}

= 1.99 LY

≈ 2 Light Years

Therefore, approximate linear dimension is 2 light years.

8 0
2 years ago
Other questions:
  • A glass optical fiber is used to transport a light ray across a long distance. The fiber has an index of refraction of 1.550 and
    7·1 answer
  • Going around a ferris wheel without stopping is an example of _____ circular motion<br>(apex)
    11·2 answers
  • A woman at an airport is towing her 20.0-kg suitcase at constant speed by pulling on a strap at an angle θ above the horizontal.
    10·1 answer
  • PLS HELP ASAP I NEED THIS BY TONIGHT
    15·1 answer
  • State a situation in which force is applied on a body, but no work is done​
    12·2 answers
  • Why are marble and granite used so often as a building materials?
    10·1 answer
  • In comparing molar specific heat for gases under constant pressure CP and constant volume CV, we conclude that (more than one co
    6·1 answer
  • What is a energy transformation when using a microwave to make popcorn?
    11·2 answers
  • Which is an example of non-renewable energy source?
    13·1 answer
  • Why do scientists not use US customary units when reporting their data?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!