Answer:
K.E = 1.6 x 10⁻¹⁸ J
Explanation:
given,
thickness between two plate = t = 0.1 mm
Voltage difference between two plate = 10 V
charge of proton = q = 1.6 x 10⁻¹⁹ C
When the charge moves from positive to negative the potential energy reduces to kinetic energy
K.E = Δ PE
K.E = q Δ V
K.E = 1.6 x 10⁻¹⁹ x 10
K.E = 1.6 x 10⁻¹⁸ J
so, the kinetic energy of the proton when it reaches negative plate is equal to K.E = 1.6 x 10⁻¹⁸ J
Answer:
(a)0.625s (b)1.569s
Explanation:
a.The ball reaches its maximum height when its speed = 0, or changing from positive to negative. To find out the time t for this we need to get the velocity function by taking the first derivative of the height function:
So when v(t) = 0
b. The ball land back on the ground when s(t) = 0:
A Correcting each car to the same size as the first one invented could get in the way during work days.