Answer:
The velocity of the astronaut is, v = - 0.36 m/s
Explanation:
Given data,
The mass of the astronaut, M = 84 kg
The mass of the gas expelled by the thruster, m = 35 g
= 0.035 g
The velocity of the gas expelled, v = 875 m/s
According to the conservation of momentum,
MV + mv = 0
V = - mv / M
Substituting the values,
V = - 0.035 x 875 / 84
= - 0.36 m/s
The negative sign in the velocity indicates the astronaut moves opposite to the direction of velocity of gas.
Hence, the velocity of the astronaut is, v = - 0.36 m/s
Answer:
Diodes helps in maintaining proper voltage levels
Explanation:
Electronic components such as diodes allow current to flow in forward biasing.
Under reverse biasing diode does not allow current to flow but a negligible amount of current does flow.
Forward biasing allow current to flow after crossing potential barrier .
When crossing this potential barrier we can observe an increase in current but the voltage does not go higher than . Even with the high input voltage.
Hence, diode maintains proper voltage in circuits.
That statement is physically and grammatically true but legally false.
I would say a because it just sounds right. I would've helped u if u had a real question question.