Explanation:
(a) Formula for critical stress is as follows.
Here, = 54.8
= 0.99
a = 0.8 mm = m
Putting the given values into the above formula as follows.
=
= 1107 MPa
Hence, value of critical stress is 1107 MPa.
(b) Applied stress value is given as 1205 MPa and since it is more than the critical stress (1107 MPa) as a result, a fracture will occur.
Answer:
Boom
Explanation:
The bomb is big and it goes boom and it also creates nuclear fragments everywhere
Explanation:
The law of conservation of mass and energy according to thermodynamics is NOT violated. The ash of the wood weighs less than the initial wood because during the burning some of the mass was converted to gases that escaped into the atmosphere. Some of the carbon in the wood, for example, turned to carbon dioxide. Water in the wood also turned to gas (water vapour) and escaped.
If it is possible to capture all these gases and weigh them, then ideally it would be observable that the law of conservation is NOT violated.