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
AnnyKZ [126]
3 years ago
10

the sputnik 1 satellite orbited earth (mass=5.98 x 10^24 kg) in a circle of radius 6.96 x 10^6 m. what was its orbital velocity?

Physics
2 answers:
user100 [1]3 years ago
8 0

Answer:

v = 4.79 10³ m / s

Explanation:

For this exercise we will use the universal law of gravitation and Newton's second law

          F = G M m / r²

where G is the gravitational constant, m the mass of the satellite, M the mass of the Earth, r the distance from the center of the planet to the satellite

           F = m a

since the satellite has a circular path, the acceleration is centripetal

          a = v² / r

we substitute

          G M m / r² = m v² / r

           G M / r = v²

   

We calculate

          v² = 6.67 10⁻¹¹ 5.98 10²⁴ / 6.96 10⁶

          v = √ (22.94 10⁶)

          v = 4.79 10³ m / s

galben [10]3 years ago
7 0

Answer:

7570 m/s

Explanation:

take the square root of: 6.67E-11× 5.98E24/6.96E6

You might be interested in
A sound system is designed to produce a 1.0W/m2 sound intensity over the surface of a hemisphere 20 m in radius. What acoustic p
Marina CMI [18]

Answer:

2513.6 W

Explanation:

Acoustic power = sound intensity × area of hemisphere

Sound intensity = 1 W/m^2

Area of hemisphere = 2πr^2 = 2×3.142×20^2 = 2513.6 m^2

Acoustic power = 1 W/m^2 × 2513.6 m^2 = 2513.6 W

3 0
3 years ago
What do you call the energy from earthquakes that propagate through earth as vibrations?<br>​
svet-max [94.6K]

Answer:elastic energy i believe

Explanation:

8 0
3 years ago
A current of 8 A flows through a conductor. The number of electrons passing through the conductor in each second will be
diamong [38]

Answer:

8=3×1019 electrons per second.

Explanation:

4 0
3 years ago
Read 2 more answers
Which units can be used to measure length or distance? Check all that apply
aliina [53]

Meters, Kilometers, and inches. i think i mean you should probably list all the choices if you want an exact answer

8 0
3 years ago
Read 2 more answers
Two banked curves have the same radius. Curve A is banked at 12.7 °, and curve B is banked at an angle of 15.1°. A car can trave
Elina [12.6K]

Answer:

20.88 m/s

Explanation:

Curve A:

theta = 12.7, vA = 19.1 m/s

Curve B:

Theta = 15.1 degree

Let the speed is v.

By the use of given formula

tanθ = v^2 / rg

For Curve A

tan 12.7 = (19.1)^2 / r g   ...... (1)

For Curve B

tan 15.1 = v^2 / r g       ......(2)

Divide equation (2) by equation (1), we get

tan 15.1 / tan 12.7  = v^2 / (19.1)^2

0.269 / 0.225 = v^2 / 364.81

v = 20.88 m/s

6 0
3 years ago
Other questions:
  • What are gamma rays used for
    15·2 answers
  • How long does it take a plane that is traveling at 350 km/h to travel 1750 km?
    9·1 answer
  • 1. Sam walked 4 meters north, 5 meters east, and 4 meters south. What is his
    7·1 answer
  • You venture out on a cold winter morning to warm up your vehicle. You have layers of cotton/polyester blend clothes on and from
    15·1 answer
  • Let’s say I am in a bumper car and have a velocity of 14 m/s, driving in the positive x-direction. I and my bumped car have a ma
    15·1 answer
  • An experiment was devised to investigate the effects on the temperature of a cup of coffee when cream is added at different time
    11·2 answers
  • . A PNP transistor is connected in a circuit so that the collector-base junction remains reverse biased and the emitter-base jun
    12·2 answers
  • The needle in the following diagram rotates around a fixed point in the middle. Based on the information given, what way will th
    10·1 answer
  • how does gravity affect objects of different mass close to earth, and how does that effect change as an object moves farther fro
    9·1 answer
  • A 3.59 kg block is released from rest 53.0 m above the ground. When it has fallen 21.3 m, what is its kinetic energy
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!