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
ANTONII [103]
3 years ago
5

A man weighs 90 N on the surface of earth of radius R at what height above the surface of earth is weight will be 40 N.

Physics
1 answer:
lapo4ka [179]3 years ago
4 0

Answer:

3/2 R

Explanation:

Let the Mass of man be m, Mass of earth be M.

By Newtons, law of gravitation,

F = GMm/R^2, Where G is gravitational constant

90 = GMm/R^2

When man weighs 40N,

GMm/(New R)^2 = 40

= 4/9 (90)

GMm/(New R)^2 = 4/9 (GMm/R^2)

(New R)^2 = 9/4 R^2

New R = 3/2 R

Therefore, height is <u>3</u><u>/</u><u>2</u><u> </u><u>R</u>

You might be interested in
How much WATER needed to offset the force of jumping down from 20metre in vacuum environment,to keep me alive.
kenny6666 [7]

Answer:

it's quite difficult

Explanation:

6 0
2 years ago
What is the displacement of the particle in the time interval 5 seconds to 8 seconds?
Dmitriy789 [7]
The displacement is the vector with

magnitude
     distance between position at 5 sec and position at 8 sec
and direction
     direction from position at 5 sec to position at 8 sec .

The route followed during the time interval is irrelevant.

      
3 0
3 years ago
Read 2 more answers
Find the magnitude of acceleration (ft/s^2) a person experiences when he or she is texting and driving 58mph, hits a wall, and c
SVEN [57.7K]

Answer:

350 ft/s²

Explanation:

First, convert mph to ft/s.

58 mi/hr × (5280 ft/mi) × (1 hr / 3600 s) = 85.1 ft/s

Given:

v₀ = 85.1 ft/s

v = 0 ft/s

t = 0.24 s

Find: a

v = at + v₀

a = (v − v₀) / t

a = (0 ft/s − 85.1 ft/s) / 0.24 s

a = -354 ft/s²

Rounded to two significant figures, the magnitude of the acceleration is 350 ft/s².

7 0
3 years ago
NO LINKS
zhenek [66]

Answer: A , D & F

Explanation:

6 0
2 years ago
Help me please I need help?
sweet [91]
Your answer is c. homologous structures
4 0
3 years ago
Other questions:
  • An unmarked police car traveling a constant 85 km/h is passed by a speeder. Precisely 2.00 s after the speeder passes, the polic
    7·1 answer
  • What process modifies light waves to vibrate in a single plane
    12·1 answer
  • How does the overtone number relate to the standing wave pattern number
    14·1 answer
  • 4. Which activity would be BEST for prolonged training within your target heart rate zone?
    8·1 answer
  • An energy transformation occurs and results in increased disorder.
    7·1 answer
  • Does toothpaste have matter
    14·1 answer
  • Earth's atmosphere contains only small amounts of carbon dioxide because
    6·1 answer
  • As thermal energy is added to a sample of water, the kinetic energy of its
    5·1 answer
  • 8. A spring of spring constant 4 N/m is stretched 0.5 meters. How strong is the restoring force?
    13·1 answer
  • Determine the value of n so that the vectors A and B are perpendicular: Ā = î + 5j + nk and B = 2î - j + k
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!