Answer:
1.791 MN
Explanation:
Thrust of the rocket can be found using the relation
T = v.dm/dt, where
T = thrust off the rocket
v = speed of the rocket, 9 km/s = 9000 m/s
dm/dt = rate at which fuel burns, 199 kg/s
Substituting the values into the formula, we have
T = 9000 * 199
T = 1791000 N
T = 1.791*10^6 N
Since 1 MN = 10^6, thus
T = 1.791 MN
Answer:
180
Explanation:
1) E=F*L, where E - energy of the baseball, F - the required force, L - backward moving (0.35m);
2) E=mV²/2, where E - energy of the baseball, m - the mass of the baseball (0.14kg), V - the velocity of the baseball (30m/s).
3) if E=F*L and E=mV²/2, then F*L=mV²/2, from which
4) according to the last formula
Answer:radio waves are electromagnetic waves propagating in any non-conductive media by varying the field at each point in it. Sound is a wave of pressure changes of the medium such as air. Radio waves are a combination of electric and magnetic fields that need no medium to travel upon.
Explanation:please give brainliest
Noise is regularly reported as a problem by neighboring homes, when we use wind generated electricity. But there is no noise problems when using oil when generating electricity.
In this case, the path difference in between two waves is two wavelengths. In this double-slit experiment, the two beams of coherent light travels in different paths making the third bright band a destruction. So the difference is 2 wavelengths in between 2 waves.
