That could be either a reflecting telescope, or else a periscope.
Answer:

Explanation:
Given that,
Mass of cabinet, m = 45 kg
Two horizontal force of 25 newtons and 18 newtons respectively in the same direction.
When the forces are acting in same direction, the net force is equal to the sum of forces i.e.
F = 25 N + 18 N = 43 N
Let a is the aceleration of the cabinet
So,
F = ma

So, the acceleration of the cabinet is
.
Typically, most four-year institutions will require the following classes to transfer:
2 English composition courses.
1 Speech course.
1 Critical thinking course.
1 Physical science class.
1 Biological science class.
1 Health class.
2 Physical education courses.
Completion of college algebra
That's all I think
The balanced combustion reaction
for butane is;
2C4H10 + 13O2 → 8CO2 + 10H2O
Molar mass of water = 18.02
g/mol
Molar mass of oxygen = 32 g/mol
2.46g H2O(1 mol H2O/18.02g)(13
mol O2/10 mol H2O)(32g O2/1 mol O2) = 5.68g O2