A35 g steel ball is held by a ceiling-mounted electromagnet 4.0 m above the floor. a compressed-air cannon sits on the floor, 4.8 m to one side of the point directly under the ball. when a button is pressed, the ball drops and, simultaneously, the cannon fires a 25 g plastic ball. the two balls collide 1.0 m above the floor. part a what was the launch speed of the plastic ball?

Answer

given,

mass of the steel ball = 35 g = 0.035 kg

the horizontal distance is

( v cos θ ) t = 4.8..........(1)

the vertical distance is

...(2)

since,

..................(3)

using equation(2) and (3)

(v t)² (cos²θ+ sin²θ) = 4.8² + 4²

(v t)²  = 39.04

t = 0.76 s

the speed is

vt = 6.25

v × 0.76 = 6.25

v = 8.22 m/s

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j