The answer is true a convex lens can produce a real image but not a viral image
Answer:
The average force that the shooter must exert to prevent the weapon from moving is 21.7 Newtons.
Explanation:
m=33g=0,033kg
V= 342 m/seg
115 bullets/min= 1 bullet every 0.52 seconds.
By the principle of momentum and amount of movement we have to:
F*t=m*V
F= (m*V)/t
F= (0.033kg * 342 m/s) / 0.52 sec
F= 21.7 Newtons
The velocity of light is v = 3 x 10⁸ m/s.
The given wavelength is λ = 0.86 nm = 0.86 x 10⁻⁹ m.
Note that
v = fλ
where f = frequency.
Therefore
f = (3 x 10⁸ m/s)/(0.86 x 10⁻⁹ m)
= 3.488 x 10¹⁴ Hz
Answer: 3.49 x 10¹⁴ Hz
I'm too sure about this question but I think the answer to this is 4.0026
When an object is in circular path then the net force on the object is always towards the center of the path
Now here the position of the tin is overhead above us
So the center of the circular path will lie just below it
So the net force is also in the direction of the center
So here we will have
Net force downwards towards the center
And this is along the direction of gravity
Now the correct answer is
<u>parallel to gravity</u>