50 g = 0.5 kg. a = 5 / 0.5 = 10 m/s^2.
Answer:
Option A.
Explanation:
In quantum physics <u>there is a law to relate the position and the momentum of the particle</u>, it says that if we know with precision where is a quantum particle, we can not know the momentum of this particle, in other words, the velocity of the particle. So, when we measure the velocity of the particle we find the correct value of the particle, but we can not determine with accuracy where is the particle. This law is known as the Heisenberg's uncertainty principle and, its expressed as follows:
<em>where Δx: is the position's uncertainty, Δp: is the momentum's uncertainty and h: is the Planck constant.</em>
Therefore, the correct answer is A: measuring the velocity of a tiny particle with an electromagnet has no effect on the velocity of the particle. It only affects the determination of the particle's position.
I hope it helps you!
Answer:
L = 94.2 ft
n ≈ 5
Explanation:
d = 500 ft
R = 15 ft
The pony walks in one ride around the circle:
L = 2*π*R = 2*3.14*15 ft = 30*π ft = 94.2 ft (One ride around the circle).
In order to determine how many times (n) can the pony give a ride before it needs a drink, we can apply
n = d / L = 500 ft / 94.2 ft = 5.308 ≈ 5
Answer:
131.09828 Joules
Explanation:
u = Initial velocity of the ball = 0
v = Final velocity of the ball when the batter makes contact with the ball= 42.91 m/s
m = Mass of the baseball = 0.1424 kg
Kinetic energy
The kinetic energy the ball has is 131.09828 Joules
Assuming no air resistance, as the ball falls, it loses potential energy (U = mgh) but since it increases in speed, it gains kinetic energy. The kinetic energy gain and potential energy loss cancels out, and therefore mechanical energy is conserved.