If the liquid is denser than the coin, then the coin will eventually
come to rest floating, with part of it above the surface of the liquid.
That's exactly the situation if you drop the coin into mercury.
Density of copper . . . 8.96 gm/cm³
iron . . . 7.87
zinc . . . 7.13
silver . . 10.5
nickel . . .8.91
lead . . . 11.4
Density of mercury . . . 13.53 gm/cm³ !
Answer:
The temperature drop in both Centigrade and Kelvin are the same:
, and
Explanation:
Start by converting 35 F and 0 F (the ends of the temp change) into Centigrades using the formula:
For 0 F:
now, the difference of these two values is:
Then if the temperature was , then the new temperature is:
And since the Kelvin scale differences are the same as the differences in the Centigrade scale, the temperature change in Kelvin is of the same magnitude:
Answer:CANT SEE THE PICTURE
ch
Explanation:
NEED A BETTER PHOTO
Answer:
h = 27.17 m
Explanation:
First, we will calculate the total mechanical energy of the system at the bottom point of the third loop:
Mechanical Energy = Kinetic Energy + Potential Energy
where,
E = Total Mechanical Energy = ?
m = mass of the roller coaster = 1200 kg
v = velocity of the roller coaster = 22 m/s
g = acceleration due to gravity = 9.81 m/s²
h = height of roller coaster = 2.5 m
Therefore,
Now, the total mechanical energy at the top position of the first hill must also be the same:
where,
v = 0 m/s
h = ?
Therefore,
<u>h = 27.17 m</u>