The answer would be A.
Combination reaction, otherwise known as synthesis reaction, occurs when two or more substances react and form a single, more complex substance.
A combination reaction looks like this in an equation:
<em> A + B </em><em>→ </em><em>AB</em>
reactants product
So from two reactants they become one product.
Let's take a look at choice A.
2H₂O(l) → 2H₂(g) + O₂(g)
reactant product(s)
Notice that from one substance, it broke down into two substances. So this is not a combination reaction. This is what you call a <em>decomposition reaction. </em>
Time is being measured in days here so if you want to calculate the rate of increase after one day, substitute 1 for t in your rate equation:
dB/dt = 0.677598 cos(1.232(1))
dB/dt = 0.22
At time t = 0 the velocity is v1. Therefore C1 = v1 and C2 = x1. Equations (1), (2), (3), and (4) fully describe the motion of particles, or bodies experiencing rectilinear (straight-line) motion, where acceleration a is constant.
Answer:
134 kg
Explanation:
The snowmobile is moving at constant speed, so the acceleration is 0.
Sum of the forces in the x direction:
∑F = ma
F − 360 = 0
F = 360
Friction force equals the normal force times the coefficient of friction:
Nμ = 360
On level ground, the normal force equals the combined weight:
(m + 50)g μ = 360
m + 50 = 360 / (gμ)
m = -50 + 360 / (gμ)
m = -50 + 360 / (9.8 × 0.2)
m ≈ 134 kg
Round as needed.
