Answer:
water can change to a solid even though its a liquid
Explanation:when water freezes it turns into a solid
Answer:
Magnitude of the induced emf is 11.62 V
Explanation:
Given:
No. of turns of the circular coil, N=185
Radius, R=4.50 cm=0.045 m
No. of turns of solenoid per meter(m), n=350
a=12.5 A
b=2.10
Now,
To determine the emf induced in the coil at t = 1.50 s:
The given equation is:
Now,
Now, substituting the respective values:
Now,
where,
A=Area=
Thus,
The power of the sound wave per unit area is what would best define sound intensity
<h2>
Rate at which base is decreasing is 3.07 cm /min</h2>
Explanation:
We have area of triangle,
A = 0.5 bh
Where b is base and h is altitude.
Differentiating with respect to time
Here area is 80 square centimeters and altitude is 7.5 centimeters,
So we have
A = 0.5 bh
80 = 0.5 x b x 7.5
b = 21.33 cm
We also have
Substituting in differentiated equation
Rate at which base is decreasing = 3.07 cm /min
Galileo discovered that objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and brick dropped together. Air resistance causes the feather to fall more slowly.