30 points A cannonball is shot from a cannon at a launch angle of 35oand an initial velocity of 147 m/s.

Assuming NO air resistance, what is the intial horizontal velocity of the cannonball.

Question 10 options:

120 m/s

9.8 m/s

51.45 m/s

147 m/s

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?