Answer:B
Explanation: The book is thinner making magnets attraction stronger, making the paper clip harder to move
Answer:
Explanation:
Given
diameter of pipe(
)=6 cm
diameter of pipe(
)=4 cm
Applying bernoulli's equation
since 
A)
Q=606 J
<span> W = 418 J
</span><span> From first law of thermodynamics,
</span><span> [ Uf - Ui ] = Q - W
</span><span> [ Uf - Ui ]=606 -418=188 J
</span><span> [ Uf - Ui ]= 188 J
</span><span>
b )
W2 = 1212 J
</span><span> Q2 = ?
</span><span> Ui2=Uf =Ui +188
</span><span> Uf2=Ui
</span> [ Uf2 - Ui2 ]<span>=Ui-(Ui+188)
</span><span> -188 J
</span><span> Q2=W2+(Uf2 -Uf1)
</span><span> Q2 =1212 -188=1024 J
</span><span> Q added in second step (b) so that internal energy is equal to initial internal energy of step (a)=1024 J</span>
Answer:
The value 
Explanation:
From the question we are told that
The acceleration due to gravity is a = 2g
The maximum height is h= 39 m
Generally from the kinematic equation
Here u is the velocity of the ball at maximum height before it start falling and the value is 0 m/s
So
<span>Density can be determined by the
mass of an object and how much it takes up space (volume). It is represented by
the formula D = M/V where D is the density in kg/m^3 or lb/ft^3, M is the mass
in kg or lb and V is the volume in m^3 or ft^3. The answer would be A. For example, you are given the mass of an
object of 40.5kg and a volume of 15m^3. Find its density.</span>
D = M/V
D = (40.5 kg)
/ (15 m^3)
<span>D = 27/10 or
2.7 kg/m^3 </span>
