Answer:
A flat, horizontal line
Explanation:
A flat, horizontal line indicates a phase change.
The temperature does not increase because the added heat goes into converting one phase into another.
A is wrong. A downward-sloping line indicates that the temperature is decreasing with time.
C is wrong. An upward-sloping line indicates that the temperature is increasing with time.
Answer:
The magnitude of Electric Field is 
Explanation:
Given:
- Radius of the solid sphere=R
- Total charge of the sphere=Q
Let consider a Gaussian surface at a distance of r such that 0<r>R in the shape of sphere such that the electric Field due to this E and it is radially outwards.
The charge inside this Gaussian surface volume we have , 
Now using Gauss Law we have
Answer: Fourth option. It increased by a factor of 3.
Solution:
m1=1.0 kg
Cylinder's gravitational potential energy: Ep=m*g*h
Ep1=(1.0 kg)*g*h
Ep1=g*h
m2=3.0 kg
Ep2=(3.0 kg)*g*h
Ep2=3*g*h
Replacing g*h by Ep1 in the equation above:
Ep2=3*Ep1
Then, the cylinder's gravitational potential energy increased by a factor of 3.
To solve this given problem, we make use of the formula:
A = Ao e^( − b t / 2 m)
Substituting all the given values into the equation:
A / Ao = e^( − b t / 2 m)
When A / Ao = 0.60 and t = 50 s, we find for b:
0.60 = e^( − b t / 2 m)
ln ( 0.60 ) = − b t / 2 m
b = − ( 2 m ) ln ( 0.60 ) / t
b = ( − 2 ) ( .200 ) ln ( 0.60 ) / 50
b = .00409
When A / Ao = 0.30, we find for t:
0.30 = e^( − b t / 2 m)
ln ( 0.30 ) = − (0.00409) t / 2 (0.200)
t = − (0.200) ln ( 0.30 ) / 0.00409
t = 118 s
Therefore the number of oscillations is:
oscillations = f * t = 2 s^-1 (118 s) = 236
Answer: 236 oscillations
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