Your question doesn't look right, so lemme assume you meant this.
A heater marked 60w evaporate 6x 10^-³kg of boiling water in 60 seconds. What is the specific latent heat of vaporization of water in jkg?
so you can understand it better..
Latent heat of evaporation is the heat required required to change water to vapor at the same temperature.(100°C)
eg. water boils at 100°C and in presence of more heat it turns to vapor at that Same temperature.
This heat is know as latent heat of Vaporization.
it's give by H=mL
where L is the specific latent heat of vaporization.
Answer:
Explanation:
The rotational kinetic energy remains constant as long as the length and angular speed are fixed.
Statement A is true.
When the ball is pulled inward and the length of the string is shortened, the rotational kinetic energy will remain constant due to conservation of energy,
Statement B is false .
Reason - Conservation of energy will not be there because external work is done on the system by the force that pulls it inward.
but the angular momentum L will not remain constant because there is an external force acting on the ball to pull it inward
Statement C is false .
Reason - the angular momentum L will remain constant because there is an external force acting on the ball which acts perpendicular to the velocity of the ball .
The moment of inertia I remains constant
Statement D is false
Reason - because distance from axis of rotation is changing.
the angular speed will remain the same throughout the process because the ball is rotating in the same plane throughout the motion.
Statement E is false
Reason - Since moment of inertia decreases , to conserve angular momentum , angular speed increases.
Answer:
0.5 s
Explanation:
From the question given above, the following data were obtained:
Number of circle (n) = 2
Time (t) = 1 s
Period =?
Period of a wave is simply defined as the time taken to make one complete oscillation. Mathematically, it can be expressed as:
T = t / n
Whereb
T => is the period
t => is the space time
n => is the number of circle or oscillation.
With the above formula, we can obtain the period of the wave as follow:
Number of circle (n) = 2
Time (t) = 1 s
Period =?
T = t / n
T = 1 / 2
T = 0.5 s
Thus, the period of the wave is 0.5 s
Energy can be one answer! There are many, but energy is a main one.
Answer:
60*12.0= 720 = v/60 * 12.0 squared which is 1,728
Explanation:
Horizontal velocity component: Vx = V * cos(α)
