Answer:
You never know if the medication could make you worse
Explanation:
Answer:
The correct answer is A.
Objects in free fall accelerate due to <u>gravity</u>.
Explanation:
Momentum can help an object to keep its state of motion at a constant velocity when no external force is applied. It can never accelerate the object.
According to the laws of motion, we know that acceleration is produced in a body only when a Force is applied in the direction of motion of body.
During a free fall, only the force of gravity is acting on an object and that too in the direction of its motion. Hence, the acceleration produced in a free falling object is due to gravity.
This actually means that the object which is emitting light spectrum is moving away from us.. how do you know that ? well.. it is clearly mentioned that it is a red shift so the wavelengths will stretched more . and thus the spectrum turns more reddish as it has higher wavelengths .. hence so called red shifts
Answer:
D) crystalline solid that conducts current under certain conditions
Explanation:
A semiconductor is any crystalline solid material whose electrical conductivity is intermediary between that of insulators and conductors. That is, a semiconductor does not conduct like a conductor but does more than an insulator.
Based on this, a semiconductor is said to only conduct electricity under certain conditions as opposed to conductors that do so under any condition. Example of semiconductors are silicon, carbon, antimony, arsenic etc.
<span>The difficulty is to find the acceleration with which the bucket will fall. It will not fall with "g" because of the tension in the rope.
</span><span>On pole torque ,τ = Tr = Iα where I is moment of inertia of pole =Mr^2/2 and r is the radius of the pole
α = Tr/I ..........................................(1)
Applying newtons law on bucket,
ma = mg-T a=g-T/m .................................................(2)
If the rope does not slip
a=αr
g-T/m = Tr^2/I
Putting I = Mr^2/2 ,we get
g-T/m = 2T/M T = g/(1/m+2/M)
Putting this value of T in eqn (2), we will get the value of "a" the downward accelration of bucket.
(Please find a by putting the values of m and M yourself).
Now that we know the value of "a", find time taken to travel 20m is very easy.
Apply the equation of motion s=ut+1/2at^2
u=0
s=20m
</span>
I hope my answer has come to your help. Have a nice day ahead and may God bless you always!