Consider the trajectories of a projectile that experiences drag due to air resistance. Maximum range is achieved by launching the projectile at . a. An angle less than 45 degrees.
b. An angles of 45 degrees.
c. An angle greater than 45 degrees.
d. An angle that depends on the launch speed

Maximum range is achieved by launching the projectile at an  angles of 45 degrees.

so the answer is B

Explanation:

What is the range of a projectile?

this can be defined as the maximum horizontal distance covered by a projectile

R=v^2sin(2θ)/2g

Why is 45 degrees maximum range?

"The sine function reaches its largest output value, 1, with an input angle of 90 degrees, so we can see that for the longest-range puts 2θ = 90 degrees and, therefore, θ = 45 degrees."

Hence a projectile, travels the farthest when it is launched at an angle of 45 degrees

coil wire, increase current, put iron inside the coil

pe = weightxheight = 2000x1000=2,000,000joules