Answer: Yes,graded receptor potential always depolarize.
Yes,graded receptor potentials must occur to depolarize the neutrons to threshold before action potentials can occur.
Explanation:
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By doing this he increases the time due to which the rate of change momnetemdecreases. that means the ball comes to rest gently and does not hurt the fielder. but, if does not move his hand backwards, then the ball would come to rest in a fraction of second with a high rate of change of momentum. the ball will exert a lot of force on the hands of the fielder which will hurt him.
One of the essential concepts to solve this problem is the utilization of the equations of centripetal and gravitational force.
From them it will be possible to find the speed of the body with which the estimated time can be calculated through the kinematic equations of motion. At the same time for the calculation of this speed it is necessary to clarify that this will remain twice the ship, because as we know by relativity, when moving in the same magnitude but in the opposite direction, with respect to the ship the debris will be double speed.
By equilibrium the centrifugal force and the gravitational force are equal therefore


Where
m = mass spacecraft
v = velocity
G = Gravitational Universal Constant
M = Mass of earth
Radius of earth and orbit
Re-arrange to find the velocity





Replacing with our values we have


From the cinematic equations of motion we have to
Remember that the speed is double for the counter-direction of the trajectories.
Replacing


Therefore the time required is 3.778s
There are 3 states of matter. Solid, Liquid, Gas. An example of each would be ice, water, steam,