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
kari74 [83]
3 years ago
15

as earth rotates about it’s axis, it takes three hours for the united states to pass beneath a point above earth that is station

ary relative to the sun. What is wrong with the following scheme? to travel from washington, D.C. to san francisco shoving very little fuel, simply ascend in a helicopter high over washington, D.C. and wait three hours until san francisco passes below
Physics
1 answer:
pickupchik [31]3 years ago
6 0

interesting question.

how much fuel to hover over one place ?

The Foucault pendulum is a v v v long pendulum which can show the eart's rotation over time if the pend bob motion is tracked and recorded

You might be interested in
What unit describes thr magnitude, or size of a force?
Bess [88]
N - adica Newtonul.
Sper că team ajutat
5 0
3 years ago
Read 2 more answers
A pilot heads his jet due east. The jet has a speed of 475 mi/h relative to the air. The wind is blowing due north with a speed
oksian1 [2.3K]

Explanation:

a. The velocity of the wind as a vector in component form will be represented as v vector:

    v=30j

b.The velocity of the jet relative to the air as a vector in component form will be represented as u vector

    u=475i

c. The true velocity of the jet as a vector will be represented as w:

  w=u+v

  w=475i+30j

d.  The true speed of the jet will be calculated as:

    IwI=\sqrt{(475)^2+(30)^2}

    IwI=\sqrt{225625+900}

    IwI=\sqrt{226525}

    IwI=476 mi/h

e. The direction of the jet will be:

tita=tan^{-1}\frac{30}{475}

tita=tan^{-1}(0.0632)

tita=3.62degrees,or,N86.38degreesS

7 0
3 years ago
What would decrease the resistance of wires carrying an electric current
Anettt [7]
The answer is A. shorter wires

6 0
3 years ago
Read 2 more answers
The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. The turns ratio of t
Sphinxa [80]

Answer:

The power consumed by the air filter is 9.936 watts      

Explanation:

It is given that, the secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter.

Turn ratio of the transformer, \dfrac{N_s}{N_p}=\dfrac{46}{1}

Voltage of primary coil, V_p=120\ V

Current in the secondary coil, I_s=1.8\times 10^{-3}\ A

The power consumed by the air filter is :

P_s=I_s\times V_s...........(1)

For a transformer, \dfrac{N_s}{N_p}=\dfrac{V_s}{V_p}

So, P_s=I_s\times (\dfrac{N_s}{N_p})\times V_p

P_s=1.8\times 10^{-3}\times (\dfrac{46}{1})\times 120

P_s=9.936\ Watts

So, the power consumed by the air filter is 9.936 watts. Hence, this is the required solution.                

3 0
4 years ago
Read 2 more answers
An incident ray traveling in a slower medium strikes a boundary with a faster medium. What happens when its angle of incidence i
inn [45]
The phenomenon that is observed when an incident ray travelling in a slower medium strikes the boundary of a faster medium with an angle greater than the critical angle is known as total internal reflection.
Total internal reflection results in the the ray being reflected within the medium, instead of leaving it after undergoing diffraction. This phenomenon is the working principle of optical fibers. 
3 0
4 years ago
Read 2 more answers
Other questions:
  • Does a physical change affect the identity of a substance? Does a chemical change affect the identity of a substance?
    5·1 answer
  • A seagull flies at a velocity of 9.00 m/s straight into the wind. (a) if it takes the bird 20.0 min to travel 6.00 km relative t
    5·1 answer
  • Two forces act on an object. The first force has a magnitude of 15.0 N15.0 N and is oriented 58.0°58.0° counterclockwise from th
    10·1 answer
  • A train moves east with a speed of 45 m/s. A man on the train walks west
    8·1 answer
  • The rate at which the earth's surface loses heat and keeps earth temperature at which living things can survive
    5·1 answer
  • What is Mach 2 in miles per hour?
    13·1 answer
  • A car is moving with a constant velocity around a circular path. If the radius of the circular path is 48.2 m and the centripeta
    6·2 answers
  • according to information received from radio telescopes, where is our sun positioned in the milky way? a. at the exact center of
    8·2 answers
  • 1) if you could eliminate one item from your diet to improve your heath, what would it be?
    9·2 answers
  • Speed is a scalar quantity that describes only the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!