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
ruslelena [56]
3 years ago
10

An astronaut sitting on the launch pad on Earth's surface is 6,400 kilometers from Earth's center and weighs 400 newtons. Calcul

ate her weight when she reaches an altitude of 6,400 kilometers above the surface of Earth.
Physics
1 answer:
PIT_PIT [208]3 years ago
5 0

Answer:

weight at height = 100 N .

Explanation:

The problem relates to variation of weight  due to change in height .

Let g₀ and g₁ be acceleration due to gravity , m is mass of the object .

At the surface :

Applying Newton's law of gravitation

mg₀ = G Mm / R²

At height h from centre

mg₁ = G Mm /h²

Given mg₀ = 400 N

400 = G Mm / R²

400 = G Mm / (6400 x 10³ )²

G Mm = 400 x (6400 x 10³ )²

At height h from centre

mg₁ =  400 x (6400 x 10³ )²/ ( 2 x 6400 x 10³)²

= 400 / 4

= 100 N .

weight at height = 100 N

You might be interested in
Which kind of good might not be bought when prices rise?
IgorC [24]

luxury goods might not be bought

5 0
2 years ago
Read 2 more answers
Assuming 70% of Earth's surface is covered in water at an average depth of 2.5 mi, estimate the mass of the water on Earth in Ki
saw5 [17]
This is an excellent question that i do not have the answer to.
7 0
2 years ago
Which term describes the number of joules used per second by a circuit?
jasenka [17]

Answer:

B) Power

Explanation:

The power is defined by the following equation:

P = W / t

where:

W = work = Force * Distance = [Newton] * [meter]

t = time = seconds

The units for work are give en Newton per second, which is equal to Joules

And for power the unit used commonly is Watts, therefore:

Watts = (Joule/second)

5 0
2 years ago
Read 2 more answers
Neurons in our bodies carry weak currents that produce detectable magnetic fields. A technique called magnetoencephalography, or
Stolb23 [73]

Answer:

I = (1.80 × 10⁻¹⁰) A

Explanation:

From Biot Savart's law, the magnetic field formula is given as

B = (μ₀I)/(2πr)

B = magnetic field = (1.0 × 10⁻¹⁵) T

μ₀ = magnetic constant = (4π × 10⁻⁷) H/m

r = 3.6 cm = 0.036 m

(1.0 × 10⁻¹⁵) = (4π × 10⁻⁷ × I)/(2π × 0.036)

4π × 10⁻⁷ × I = 1.0 × 10⁻¹⁵ × 2π × 0.036

I = (1.80 × 10⁻¹⁰) A

Hope this Helps!!!

3 0
3 years ago
A sailboat sits tied up at the dock.
shutvik [7]

Answer:B

Explanation:i think so im not suree

5 0
2 years ago
Other questions:
  • Over a period of more than 30 years, albert klein of california drove 2.5 × 106 km in one automobile. consider two charges, q1 =
    5·1 answer
  • Scientific theories cannot change once they've been written down true or false ​
    15·2 answers
  • A vertebra is subjected to a shearing force of 535 N. Find the shear deformation, taking the vertebra to be a cylinder 3.00 cm h
    6·1 answer
  • A stone is launched from the ground, at a 70° angle, with an initial velocity of 120 m/s.
    10·2 answers
  • A ball of putty is dropped from a height of 2 m onto a hard floor, where it sticks. Part A What object or objects need to be inc
    9·1 answer
  • What unit is used to measure the amount of energy that people get from food?
    15·1 answer
  • What acceleration is imparted to a football when the player kicked it with a force of 25 N? mass of football=0.40 kg
    11·1 answer
  • Why do astronomers hypothesize that a massive black hole lies at the center of m87?
    12·1 answer
  • An astronaut has a mass of 150 kg on earth. what would be the mass of the astronaut on the moon.
    15·1 answer
  • If 400g is 1kg find the ratio in the simplest form​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!