Answer:
47.86 m
Explanation:
Consider the motion along the vertical direction and assume the motion in downward direction as negative
y = vertical displacement = - 0.025 m
a = acceleration = - 9.8 m/s²
t = time taken to strike the target below the center
= initial velocity along the vertical direction = 0 m/s
Using the kinematics equation
y = t + (0.5) a t²
Inserting the values
- 0.025 = (0) t + (0.5) (- 9.8) t²
t = 0.0714 sec
Consider the motion along the horizontal direction
x = horizontal displacement = horizontal distance between the end of the rifle and the bull's-eye
v₀ = velocity along the horizontal direction = 670 m/s
Since there is no acceleration along the horizontal direction, we have
x = v₀ t
inserting the values
x = (670) (0.0714)
x = 47.86 m
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I also need help with this problem!!
Answer:
E = 1.50 × 
V/m
Explanation:
given data
B = 0.50 T
solution
we know that energy density by the magnetic field is express as
...............1
and
energy density due to electric filed is
...............2
and here 
so that
E = 
...................3
put here value and we get
E = 3 × × 0.50
E = 1.50 × V/m
1.5 / 0.5 = 3 I believe this is the right answer
