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
GalinKa [24]
3 years ago
7

An artificial sattelite is moving in a circular orbit of radius 42250km calculate its speed if it takes 24 hours to revolve arou

nd the earrth
Physics
1 answer:
vekshin13 years ago
5 0

Answer:

v = 11061.02 km/h

Explanation:

Given that,

The radius of the circular orbit, r = 42250 km

Time taken to revolve around the Earth, t = 24 hours

We need to find the speed of the satellite. We know that, speed of an object is equal to total distance traveled divided by the time taken. So,

v=\dfrac{2\pi r}{T}

Put all the values,

v=\dfrac{2\pi \times 42250}{24}\\\\v=11061.02\ km/h

So, the speed of the satellite is equal to 11061.02 km/h.

You might be interested in
Why does Energy appear continuous in everyday life?
lara31 [8.8K]

Answer:

The first law of thermodynamics, also known as Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another. For example, turning on a light would seem to produce energy; however, it is electrical energy that is converted. Nothing happens to the energy. It does not change form, since energy has no form. ... If the energy was moving, it gets stored or re-transmitted elsewhere. Using energy means controlling its movement, rather than consuming it.

8 0
3 years ago
Oil having a density of 926 kg/m3 floats on water. A rectangular block of wood 3.69 cm high and with a density of 974 kg/m3 floa
zloy xaker [14]

Answer:

the position of the wood below the interface of the two liquids is 2.39 cm.

Explanation:

Given;

density of oil, \rho _o = 926 kg/m³

density of the wood, \rho _{wood} = 974 kg/m³

density of water, \rho _w = 1000 kg/m³

height of the wood, h = 3.69 cm

Based on the density of the wood, it will position across the two liquids.

let the position of the wood below the interface of the two liquids = x

Let the wood be in equilibrium position;

F_{wood} - F_{oil} - F_{water} = 0\\\\\rho _{wood} .gh - \rho _o .g(h-x) - \rho_w .gx = 0\\\\\rho _{wood} .h - \rho _o (h-x) - \rho_w .x = 0\\\\\rho _{wood} .h -\rho _o h + \rho _o x - \rho_w .x =0\\\\h (\rho _{wood}  -\rho _o ) = x( \rho_w - \rho _o)\\\\x =h[\frac{ \rho _{wood}  -\rho _o }{\rho_w - \rho _o} ]\\\\x = 3.69\ cm \times [\frac{974 - 926}{1000-926} ]\\\\x = 2.39 \ cm

Therefore, the position of the wood below the interface of the two liquids is 2.39 cm.

6 0
3 years ago
You suspect that an uninterruptible power supply (UPS) is malfunctioning. You need to test the output from the UPS using a multi
zmey [24]

Answer:

Option A

Explanation:

An Uninterruptible Power Supply abbreviated as UPS is used in case of the failure of the power mains or the input power in order to ensure uninterrupted power supply.

The Ac voltage is first converted to DC and then again inverted to the AC and is fed to the system.

Thus if the UPS malfunctions then in order to check the output using multimeter we use AC voltage setting because the UPS purely supplies AC power, even if the power is  supplied from its internal battery then also it inverts the DC into AC and then supply.

7 0
3 years ago
When working with a razor blade or exacto knife --
stich3 [128]

Answer:

last answer

Explanation:

gripping it with the blade facing downward is the most efficient and safe way to use an exacto knife

6 0
3 years ago
Which of the following is a common property of Noble Gases?
Softa [21]
<span>Have a full outer shell of electrons.</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • The period of a mechanical wave is 5 seconds. What is the frequency of the wave?
    5·1 answer
  • Iron oxide reacts with aluminum to give aluminum oxide and iron. What kind of chemical reaction is this? A. combustion B. decomp
    14·2 answers
  • A 3.0-kg block starts at rest at the top of a 37° incline, which is 5.0 m long. Its speed when it reaches the bottom is 2.0 m/s.
    15·1 answer
  • Hydrogen bombs and stars both produce energy with nuclear ?
    11·1 answer
  • You are driving at 25 m/s with your cruise control on when you see a fallen tree in the road. It takes you 0.30 s to put on the
    15·1 answer
  • The unit of force, Newton is a derived unit. (give reasons) ​
    8·1 answer
  • After students complete a scientific investigation, why is it important for the class to discuss the results obtained by each la
    15·1 answer
  • How to measure the external diameter of a sphere
    12·1 answer
  • When a potential difference of 12 V is applied to a wire 6.7 m long and 0.31 mm in diameter the result is an electric current of
    10·1 answer
  • II) A 0.40-kg ball, attached to the end of a horizontal ord, is rotated in a circle of radius 1.3 m on a friction- less horizont
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!