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RUDIKE [14]
3 years ago
6

A spacecraft in outer space increases velocity by firing its rockets. How can hot gases escaping from its rockets change the vel

ocity of the craft when there is nothing in space for the gases to push against?
Physics
1 answer:
Elena-2011 [213]3 years ago
3 0

Answer:

Momentum is conserved.

Explanation:

-Momentum is conserved.

-By Newton's third law (For every action, there is an equal and opposite reaction.)-the change in momentum of gases in one direction must be balanced by an equal change in momentum of the spacecraft in the opposite direction.

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10. Which of these devices is also referred to as a'key'?
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Electric switch is commonly known as the key of an electric circuit.

3 0
2 years ago
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A car goes forward along a level road T a constant velocity the additional force needed to being the car into equilibrium is?
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2 years ago
A particle moving in simple harmonic motion with a period T = 1.5 s passes through the equilibrium point at time t0 = 0 with a v
ch4aika [34]

Answer

given,

Time period= T = 1.5 s

If it's moving through equilibrium point at t₀= 0 with v = 1.0 m/s

v_max=1.00 m/s

we know,

v_ max=A ω  

v = A sin (ωt)

-0.50= -1.00 sin (ωt)

sin (ωt)  =  0.5

\omega t = sin^{-1}(0.5)

\dfrac{2\pi}{T}\times t =0.524

\dfrac{2\pi}{1.5}\times t =0.524

t = 0.125 s

we have time period T=1.5 it is the time to complete one oscillation

means from eq to right,then left,then eq,then left,then from right to eq

time taken for left = t/4 = 0.125/4 = 0.375 s

smallest value of time

=0.375 + 0.125

= 0.50 sec

7 0
3 years ago
what is the purpose of a control sample that is known to be from bighead carp in edna surveillance? a. to produce multiple bandi
garri49 [273]

Correct answer choice is :


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Explanation:


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3 years ago
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