Malleable basically means bendable and shapeable. notebook paper is the easiest to bend and shape
Answer:
The thermal energy is absorbed
Explanation:
In an endothermic reaction, the products are higher in energy than the reactants. Therefore, the change in enthalpy is positive, and heat is absorbed from the surroundings by the reaction.
maybe gravity because when you sit gravity holds you down
Answer:
m=43.39 Kg
Explanation:
from conservation principle we have
heat gained by ice equal to heat lost by coffee
heat gained by ice = heat from -15 °C ice to 0 °C ice + 0 °C ice to 0 °C water + 0 °C water to 65 °C water
= m*S1*15 + mL + ms2 *65
where s is specific heat of respective phase
= m(2.08 *15 + 334.16 + 4.184 *65)
= m*637.32
heat lost by the coffee= ms* delta T
=0.3 *4190 *(87-65)
=27654
therefore
27654 = m*637.32
m=43.39 Kg
Answer:
See the answer below.
Explanation:
The weight of the table should be equal to the weight of the table plus the weight of the book.
![w_{table}=m_{table}*g\\w_{table}=200*9.81\\w_{table}=1962[N]](https://tex.z-dn.net/?f=w_%7Btable%7D%3Dm_%7Btable%7D%2Ag%5C%5Cw_%7Btable%7D%3D200%2A9.81%5C%5Cw_%7Btable%7D%3D1962%5BN%5D)
And for the book
![w_{book}=m_{book}*g\\w_{book}=50*9.81\\w_{book}=490.5[N]](https://tex.z-dn.net/?f=w_%7Bbook%7D%3Dm_%7Bbook%7D%2Ag%5C%5Cw_%7Bbook%7D%3D50%2A9.81%5C%5Cw_%7Bbook%7D%3D490.5%5BN%5D)
And the total weight
![w = w_{table}+w_{book}\\w=1962+490.5\\w = 2452.5 [N]](https://tex.z-dn.net/?f=w%20%3D%20w_%7Btable%7D%2Bw_%7Bbook%7D%5C%5Cw%3D1962%2B490.5%5C%5Cw%20%3D%202452.5%20%5BN%5D)
For the system to be in balance, the reaction force exerted by the table on the book must be equal to the weight of the book. This force in physics is known as the normal force.
![N_{force} = w_{book}\\N_{force}=490.5[N]](https://tex.z-dn.net/?f=N_%7Bforce%7D%20%3D%20w_%7Bbook%7D%5C%5CN_%7Bforce%7D%3D490.5%5BN%5D)
