The number of protons always equals the number of neutrons in all isotopes: false
Different isotopes for the same element always have the same number of protons: True
The number of protons never equals the number of neutrons in an isotope: False (example: He)
Different isotopes for the same element will always have the same numbers of neutrons: false
Answer:
Linear velocity of the club head is 40 m/s
Explanation:
To calculate the linear velocity of the club head, we just need to multiply the angular velocity of the driver (Av = 20 rad/s) by the distance from the club head to the axis of rotation (d = 2.0 m)
So, the linear velocity of the club head (Lv) is:
Lv = Av * d = 20 * 2 = 40 m/s
Food - Without an efficient way of producing and gathering food in a way that actively keeps up with the population demand, would cause a difficulty in supporting the population, thus stopping it from increasing.
Weather or environment - Harsh weather conditions can diminish basic needs like maintaining a warm, dry shelter or producing crops without them being destroyed for example.
Some other limiting factors would be Diseases or predators and the ability to fight them off, fresh water sources, warmth, temperatures, location of the settlements, etc.
Hope you found it helpful.
Answer:
(a) 67.44 second
(b) 529.5 revolutions
Explanation:
ωo = 49.3 rad/s
α = 0.731 rad/s^2
(a) Let it takes t time to come to rest.
ω = 0
Use first equation of motion for rotational motion
ω = ωo + α t
0 = 49.3 - 0.731 x t
t = 67.44 second
(b) Let it turns an angle θ rad before coming to rest. use third equation of motion for rotational motion.
ω^2 = ωo^2 + 2 α θ
0 = 49.3 x 49.3 - 2 x 0.731 x θ
2430.49 = 1.462 θ
θ = 1662.44 rad
Number of revolutions = θ / 2π = 1662.44 / 3.14 = 529.5 revolutions
Troposphere is the answer
