Question

The current theory of the structure of the

Answer 1

Answer:

pt 1: $m=1.66698*10^{21} kg$

Pt 2: $KE=1212.23531 J$

Explanation:

Information Given: (p = density)

l = 5200km  d = 35km p = 2700kg/$m^{2}$

Part 1: Mass

• Find volume

1. $V=(l)^2(d)$
2. $V=(4.2*10^6)^2(35*10^3)$
3. $V=61.74*10^{16}$

• Find Mass

1. $m=Vp$
2. $m=(61.74*10^{16})(2700)$
3. $m=1.66698*10^{21}$

Part 2: Kinetic Energy

1. $v=\frac{3.8cm}{yr}*\frac{m}{100cm}*\frac{yr}{365d}*\frac{d}{24hr}*\frac{hr}{3600s}$
2. $v=1.20497*10^{-9}$

$KE=\frac{1}{2}mv^2$

$KE=\frac{1}{2} (1.66698*10^{21})(1.20497*10^{-9})^2$

$KE=1212.23531 J$

Part 3: Jogger Speed

set up, because I don't have the mass :(

Information given:

$KE_{jogger}$

1. $KE=\frac{1}{2}mv^2$
2. $v_{jogger} =\sqrt{\frac{2KE}{m_{jogger} } }$

• Input the values

Hope it helps :)