Answer:
The net force acting on that object must be 0
Explanation:
According to Newton's first law of motion, if there's no force acting on an object (or the net force is 0), that object will stay at the same speed. That object acceleration must also be 0.
It travels 75 Sin 45 Km Km East and the same distance 75 Cos 45 Km North.
Answer:
The pitch stays the same I think
Explanation:
<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!
Answer:
C ) Electric charge.
Explanation:
Amber is used in the experiments related to static electricity.
In electrostatics, elektron was the word used as a variation to amber, by the Greeks. Amber buttons, when rubbed with cloth, attracted hair.
Studies showed that when amber is rubbed with fur, fur became negatively charged and amber became positively charged. That is because amber loses its electrons to fur.