Sound waves are not able to travel in a vacuum, sound requires a medium such as air or a solid for example. Satellites are indeed in space, but radio waves are not sound waves they are a form of light. Light can travel in a vacuum so the messages that satellites beam back to Earth are light waves not sound waves, that is why it is possible.
centre of square disrance to each corner found by Pythagoras' theorem.
coulombs law used to clculate field of each charge at centre
fields added vectorially for res
it doesnt show a picture or anything for me soorryy
Answer:
θ = 25.4º
Explanation:
For this exercise we can use the projectile launch equations, let's use the scope ratio
R = vo² sin 2θ / g
For the first ball
R1 = 35² 2 sin (2 30) /9.8
R1 = 108.25 m
For the second ball, they ask that the second ball fall in the same place, so the horizontal distance is the same
R2 = R1
Therefore we calculate the angle
sin 2θ = R1 g / vo²
sin 2θ = 108.25 9.8 / 37²
sin 2θ = 0.7749
2θ = sin⁻¹ (0.7749)
2θ = 50.8º
θ = 25.4º
