Density is a physical property
Another name for the interstellar matter that will eventually form a star is a protostar or nebula. It is defined as a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter. It is <span>an interstellar cloud of dust, hydrogen, helium and other ionized gases. </span>
Answer: 8*10^-15 N
Explanation: In order to calculate the force applied on an electron in the middle of the two planes at 500 V we know that, F=q*E
The electric field between the plates is given by:
E = ΔV/d = 500 V/0.01 m=5*10^3 N/C
the force applied to the electron is: F=e*E=8*10^-15 N
Number 13 is D the heart has 4 chambers and pumps blood to the arteries and number 14 us C