Answer:
Atomic number of the daughter isotope = (Atomic number of the parent isotope) - 4
Explanation:
An alpha particle has atomic number of 2 and a mass number of 4
Losing two alpha particles would lead to a reduction of 4 in atomic number and 8 in mass number for the radioactive isotope, to give the stable daughter isotope.
To solve this problem, apply the concepts related to the calculation of the work performed according to the temperature change (in an ideal Carnot cycle), for which you have to:

Where,
C = Heat capacity of the Brick
= Cold Temperature
= Hot Temperature
Integrating,

Our values are given as


Replacing,



Therefore the work perfomed by this ideal carnot engine is 58kJ
Melting and pressure.
Weathering and erosion affect any surface rock and make sedimentary rocks, heat and pressure make metamorphic rocks, and melting and cooling make igneous rocks. Melting and pressure is not a step.
Answer:
pt 1: 
Pt 2: 
Explanation:
Information Given: (p = density)
l = 5200km d = 35km p = 2700kg/
Part 1: Mass






Part 2: Kinetic Energy





Part 3: Jogger Speed
set up, because I don't have the mass :(
Information given:



Hope it helps :)