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iragen [17]
3 years ago
10

The Voyager 1 spacecraft, shown below, completed its space exploration mission in 1980 and has since been traveling away from Ea

rth at a speed of about 39,000 miles per hour.
If no unbalanced forces act on Voyager 1, then

A. the direction of its motion will reverse.
B. it will continue traveling at the same speed.
C. its speed will slowly decrease.
D. its speed will slowly increase.
Physics
2 answers:
Andreas93 [3]3 years ago
8 0

its b hope it helps

have a good day


aleksklad [387]3 years ago
4 0
I think b hope this helps
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A boy throws a ball of mass 0.22 kg straight upward with an initial speed of 29 m/s. When the ball returns to the boy, its speed
maksim [4K]

Answer:

The work is -67.76 J

Explanation:

The law of conservation of energy is considered one of one of the fundamental laws of physics and states that the total energy of an isolated system remains constant. except when it is transformed into other types of energy.

This is summed up in the principle that energy can neither be created nor destroyed in the universe, only transformed into other forms of energy.

In this case you must calculate the loss of kinetic energy. This loss is actually the work done against the resistive force in the air. Friction is the only force other than gravity that acts on the ball.

So, the loss of kinetic energy is \frac{1}{2} *m*(vf^{2} -vi^{2} )

You know:

  • mass=m=0.22 kg
  • Initial velocity of the ball: vi= 29 \frac{m}{s}

Final velocity of the ball: vf= 15 \frac{m}{s}

Replacing:

\frac{1}{2} *0.22 kg*(15^{2} -29^{2} )= -67.76 J

Friction work is always negative because friction is always against displacement.

<u><em>The work is -67.76 J</em></u>

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When a wave is acted upon by an external damping force, what happens to the energy of the wave
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The energy of the wave decreases gradually
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An ocean wave is an example of what type of wave​
Tanzania [10]

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It is called a surface wave (rayleigh wave) that transmits its energy with the wind blowing onto its surface.Hope this helps

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how much time would it take for an airplane to reach its destination if it traveled at an average speed of 790 km/hr for a dista
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I think your question is incomplete because the distance between destination and departure point isn't given in the question

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<span>As long as both mirrors are set at 45% and the same size then you see the same as is reflected in the upper mirror </span>

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<span>? </span>

<span>We use mirrors when we drive cars ect </span>

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