Either Solute or solvent may have hydrogen bond in it but another one has opposite. So, in situation of un-like characteristics, they can't dissolve by any means!
Hope this helps!
Answer:
a) 
, b) 
, c) 
, d) 
, e) The direction of the centripetal acceleration experimented by the gum goes to the center of rotation, f) Zero, g) 
.
Explanation:
a) The maximum angular velocity of the fan is:
b) The angular acceleration of the fan is:
c) The magnitude of the tangential aceleration is:
d) The magnitude of the centripetal acceleration is:
e) The direction of the centripetal acceleration experimented by the gum goes to the center of rotation.
f) When fan is at full speed, it rotates at constant rate and, hence, there is no angular acceleration. Besides, the tangential acceleration experimented by the gum is zero.
g) The linear speed of the gum is:
The device is an anemometer<span>
It's like 4 cups that measure the speed instead of direction
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Answer:
The law of conservation of matter says that in chemical reactions, the total mass of the products must equal the total mass of the reactants.
Answer:
Explanation:
The period of oscillation is given as
T=2π√m/k
Making k subject of the formula
Square both sides of the equation
T²=4π²(m/k)
Cross multiply
T²k=4π²m
Then, divide through by T²
k=4π²m/T²
Where
k is spring constant
m is the mass of the bob
And T is the period of the oscillation
m=140g=0.14kg
14 oscillations takes 14 seconds
Then the period is
T=time/oscillation
T=14/14
T=1sec
Then,
k=4π²m/T²
k=4π²×0.14/1²
k=1.76N/m
Then, the spring constant is 1.76N/m
