The nucleus of an atom contain protons and neutrons
Answer: 40m/s
Explanation:
Given that,
speed of car (v) = ?
Mass of car (m) = 500.0 kilogram
Kinetic energy (KE) = 400,000 joules
Recall that kinetic energy is possessed by a moving object, and it depends on the mass and speed by which the object moves
i.e Kinetic energy = 1/2mv²
400,000J = 1/2 x 500.0kg x v²
400,000J = 250.0kg x v²
v² = 400,000J / 250.0kg
v² = 1600
Find the square root of v²
v = √1600
v = 40m/s
Thus, the speed of the car is 40m/s
Answer:
12m/s
Explanation:
v^2=u^2+2as
v=?
u=0 (the dish was stationary before it fell)
a=9.81 m/s^2 (acceleration due to gravity/freefall)
s=1.5m (the drop height)
So: v^2=0+2.9.81.1.5 = 144.35415
and therefore v=sqrt 144.35415
12x12=144 so I'd say v=12m/s
Answer:
Number of Wire Turns in the Coil.
Explanation:
The greater the number of turns of wire in the coil, the greater the inductance. Fewer turns of wire in the coil results in lesser inductance. More coils of wires indicate a greater amount of magnetic field force for a given amount of coil current.
Answer:
(a) vf = 1.51 m/s
(b) vf = 36.22 m/s
Explanation:
The rate of change of momentum is equal to the force:
where,
F = Force = 1035 N
t = time = 0.175 s
vi = initial speed = 0 m /s
vf = final speed = ?
(a)
m = mass of body = 120 kg
Therefore,
<u>vf = 1.51 m/s</u>
<u></u>
(b)
m = mass of head = 5 kg
Therefore,
<u>vf = 36.22 m/s</u>
