D = 0.9 km = 900 m, distance moved
v = 35 nm/s , the speed
v = 35 x 10⁻⁹ m/s
= (35 x 10⁻⁹ m/s)*(365 days/y)*(24*60*60 s/day)
= 1.1038 m/y
The time iaken is
t = d/v
= (900 m)/(1.1038 m/y)
= 815.365 y
Answer: 815.4 y (nearest tenth)
Answer:
7.66×10⁻⁵ K⁻¹
Explanation:
From the question,
γ = (v₂-v₁)/[v₁(t₂-t₁)]....................... Equation 1
Where γ = coefficient of volume expansion, v₁ = initial volume, v₂ = Final volume, t₁ = initial temperature, t₂ = Final Temperature.
Given: v₁ = 26.1 cm³, v₂ = 26.2 cm³, t₁ = 25 °C, t₂ = 75 °C.
Substitute these values into equation 1
γ = (26.2-26.1)/[26.1(75-25)]
γ = 0.1/(26.1×50)
γ = 0.1/1305
γ = 7.66×10⁻⁵ K⁻¹
Hence the coefficient of volume expansion is 7.66×10⁻⁵ K⁻¹
Rate of performing work is called power.
Time = work done/Power = 1800/300 = 6 sec.
Therefore it takes 6 secs to perform work.
7 and a half hours because if you multiply 120 by 8 you get 960 and if you multiply 120 by 7 you get 840. So it’ll take 7 full hours and 30 minutes to reach 950 km. Hope this helps and I’m sorry if it’s wrong I did my best :)
The nucleus is the center of the atom made up of protons and neutrons with an overall positive charge. this is where the majority of the atom's mass is.
the electron cloud is the energy levels filled with electrons orbiting the nucleus, there is hardly any mass and it has an overall negative charge equal to that of the nucleus it is orbiting if it is part of a neutral atom.