PE = mgh
where
m = mass
g = acceleration due to gravity
h = height
Answer:
If a chord had notes with frequencies of 100, 1,000, and 6,000 Hz, the basilar membran would vibrate at multiple positions, with peaks at A, B, and C.
Explanation:
Answer:
I think its 9.0397 Ohms
Explanation:
take the reciprocal of all the resistances: 1/15, 1/65, 1/35
then add them: = 151/1365
then reciprocal the answer: =1365/151
And chuck it on a calculator: =9.04 Ohms
I think this is right but I'm not entirely sure. Tell me if I'm right by the way!
Answer:
The temperature rise is
.
Explanation:
Given the mass of the hammer
is 1.19 kg.
And the speed of the hammer
is 8.4 m/s.
We need to find the temperature change of iron nail having 20 hammer blows.
First, we will find the kinetic energy of the each blow of hammer.


For 20 such blows, the kinetic energy will be

Let us assume that the nail absorbs all the kinetic energy. So, this 839.8 J will be converted into heat energy
.
Now,

Also, we know that

Where,
is the mass of the nail, which is 
is the specific heat capacity of iron, which is 449 J/kg.K
is the change in temperature.
Plug these value we get,

We can see the temperature rise is 143.9 K.