In a <span>decomposition </span><span>reaction, a complex substance breaks down into simpler substances.
</span>
Newton's second law of motion states the following:

In which

is the force,

is the mass, and

is the acceleration of the object.
So, the answer is B.
The total mass of the galaxy is 443.4 Solar mass
Orbital velocity (
) = 
where M= weight of galaxy
G= gravitational constatnt =
(given)
R = distance from centre =
Light years (given)=
km (1 ly=
billion km)
v= orbital velocity =
(given)
∴ According to the formula
= 
⇒
(cross multiplying and expanding)
⇒ 
⇒ 
⇒ 
1 solar mass = 
⇒ Mass in solar mass =443.4 Solar mass
⇒ M = 443.4 Solar mass
Learn more about Orbital velocity here :
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Answer:
405 m
Explanation:
Given:
v₀ = 0 m/s
a = 2.5 m/s²
v = 45 m/s
Find: Δx
v² = v₀² + 2aΔx
(45 m/s)² = (0 m/s)² + 2 (2.5 m/s²) Δx
Δx = 405 m
Answer:
G.P.E = 368.3
Explanation:
Given the following data;
Mass = 2.63kg
Height, h = 14.29m
We know that acceleration due to gravity is equal to 9.8m/s²
To find the gravitational potential energy;
Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.
Mathematically, gravitational potential energy is given by the formula;

Where;
G.P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.

G.P.E = 368.3
Note: the unit of gravitational potential energy is Joules.