Answer:
C. It helps scientists detect dark matter.
Explanation:
I got a 100% on my test. hope it help and I hope your having an awesome day :)
Answer:
no picture or anything so cant anwser
Explanation:
Magnetic fields are an area around a magnetic material or a moving electric charge with which the force of magnet
Answer:
(a). The initial velocity is 28.58m/s
(b). The speed when touching the ground is 33.3m/s.
Explanation:
The equations governing the position of the projectile are


where
is the initial velocity.
(a).
When the projectile hits the 50m mark,
; therefore,

solving for
we get:

Thus, the projectile must hit the 50m mark in 1.75s, and this condition demands from equation (1) that

which gives

(b).
The horizontal velocity remains unchanged just before the projectile touches the ground because gravity acts only along the vertical direction; therefore,

the vertical component of the velocity is

which gives a speed
of


B when is spins it means its rotating east and west directions