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
lana [24]
3 years ago
8

The International Space Station (ISS) orbits Earth at an altitude of 400 km. Using this information, plus the mass and radius of

Earth, calculate the orbital velocity of the ISS (in m/s) and the period of a single orbit around Earth (in minutes).
Physics
1 answer:
Thepotemich [5.8K]3 years ago
5 0

Answer:

v = 7671.57 m/s

T = 1.55 hours

Explanation:

mass of Earth, M = 6 x 10^24 kg

Radius of earth, R = 6400 km = 6.4 x 10^6 m

height, h = 400 km

Velocity is given by

v=\sqrt{\frac{GM}{R+h}}

where, G be the universal gravitational constant.

G = 6.657 x 10^-11 Nm^2/kg^2

v=\sqrt{\frac{6.67\times 10^{-11}\times 6\times 10^{24}}{6800\times 10^{3}}}

v = 7671.57 m/s

Let T b the period

T=\frac{2\pi (R+h)}{v}

T=\frac{2\times 3.14(6800\times 1000)}{7671.57}

T = 5566.53 second

T = 1.55 hours

You might be interested in
What factor affects the polarization of light by scattering?
MatroZZZ [7]

Answer:

The correct answer would be A.

Explanation:

I have gotten this answer many times and have never failed once just trust me.

4 0
2 years ago
The elastic energy stored in your tendons can contribute up to 35 % of your energy needs when running. Sports scientists have st
irina [24]

Complete Question:

The elastic energy stored in your tendons can contribute up to 35 % of your energy needs when running. Sports scientists have studied the change in length of the knee extensor tendon in sprinters and nonathletes. They find (on average) that the sprinters' tendons stretch 43 mm , while nonathletes' stretch only 32 mm . The spring constant for the tendon is the same for both groups, 31 {\rm {N}/{mm}}. What is the difference in maximum stored energy between the sprinters and the nonathlethes?

Answer:

\triangle E = 12.79 J

Explanation:

Sprinters' tendons stretch, x_s = 43 mm = 0.043 m

Non athletes' stretch, x_n = 32 mm = 0.032 m

Spring constant for the two groups, k = 31 N/mm = 3100 N/m

Maximum Energy stored in the sprinter, E_s = 0.5kx_s^2

Maximum energy stored in the non athletes, E_m = 0.5kx_n^2

Difference in maximum stored energy between the sprinters and the non-athlethes:

\triangle E = E_s - E_n = 0.5k(x_s^2 - x_n^2)\\\triangle E = 0.5*3100* (0.043^2 - 0.032^2)\\\triangle E = 0.5*31000*0.000825\\\triangle E = 12.79 J

4 0
3 years ago
A 86g ball is dropped vertically to the floor from a height of 2.87m and bounces to a height of 1.28. What is the magnitude of t
irga5000 [103]

Answer:

The impulse received by the ball from the floor during the bounce is approximately 1.11329438 m·kg/s

Explanation:

The given mass of the ball, m = 86 g = 0.089 kg

The height from which the ball is dropped, H = 2.87 m

The height to which the ball bounces, h = 1.28 m

Mathematically, we have;

Δp = F·Δt

Where;

Δp = The change in momentum = m·Δv

F = The applied force

Δt = The time of contact with the force

The velocity of the ball just before it touches the ground, v₁ = -√(2·g·H)

The velocity with which the ball leaves, v₂ = √(2·g·h)

The change in momentum, Δp = m·(v₂ - v₁)

∴ Δp = m·(√(2·g·h) - (-√(2·g·H))) = m·(√(2·g·h) +√(2·g·H) )

The impulse, Δp, received by the ball from the floor during the bounce is given as follows;

Δp = 0.089 kg × (√(2 × 9.8 m/s² × 1.28 m) + √(2 × 9.8 m/s² × 2.87 m)) ≈ 1.11329438 m·kg/s

The impulse received by the ball from the floor during the bounce, Δp ≈ 1.11329438 m·kg/s

6 0
3 years ago
What is the frequency of a transverse wave ?​
yuradex [85]

Answer:

The number of complete vibration or wave made in

one second is called frequency.

7 0
3 years ago
How many turns are needed in a solenoid of radius 10 cm and length 20 cm for its self-inductance to be 6.0 H?
MA_775_DIABLO [31]

Answer:

B

Explanation:

5 0
3 years ago
Other questions:
  • A system absorbed 44 joules of heat from its surroundings. After doing work, the increase in the internal energy of the system i
    12·2 answers
  • Express 79 m in units of (a) centimeters
    9·1 answer
  • Which expression has the same dimensions as an expression yielding a value for acceleration (m/s2)? (delta v has units of m/s.)
    9·1 answer
  • Identify the phyla of the organisms on the basis of following distinct characteristics:
    14·1 answer
  • Microwave ovens emit microwave energy with a wavelength of 12.1 cm. What is the energy of exactly one photon of this microwave r
    7·1 answer
  • If you increase the surface area of a rock, how will it affect the rate at which it weathers? a. It will weather more quickly. b
    8·1 answer
  • If you have a liquid with a mass of 6g and a density of 25g/ml, what volume of liquid do you have?
    6·1 answer
  • 14. Saeed is pulling a 6 kg heavy rock with an upward force of 40 N but does not succeed to lift it up. What is the magnitude of
    7·1 answer
  • Prove that Efficiency=MA/ VR x 100%
    9·1 answer
  • Draw a diagram showing 2 forces acting on an object in opposite directions with a total net force of 3N to the left.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!