The answer is a. endothermic.
In endothermic reaction, as the name suggests, the reactants require energy absorption to form and complete the chemical reaction to form products.
And even if you don't know the answer, you can exclude all other answers by scientific logic and you will be left with the correct answer.
Hope this helps.
Let and be the vectors, and let be their common magnitude.
The resultant is times larger in magnitude than either vector alone, so .
Recall the dot product identity
where is the angle between the vectors and . In the special case of , we get
Now, to get the angle between and , we have
To compute the dot product, we take the dot product of the resultant with itself.
Solve for .
Since their dot product is zero, and are perpendicular, so .
2.440
X 107. The magnitude
------------ Is 261.080 plz
17.080. Make the
00.000. Brainliest
244.000
----------------
261.080
Answer:
a) W = 40.49 10² J and b) W₂ = - 3308.7 J
Explanation:
The equation for work is
W = F. d
Bold indicates vectors, we can also write that equation with the modules
W = F d cos θ
Where θ is the angle between force and displacement
a) Traction reinforcement work
W = 3.59 10² 12.3 cos 23.5
W = 40.49 10² J
b) frictional force work, we have to use Newton's second law to find the friction force
Y Axis
N-W = 0
N = W
The formula for friction force is
fr = μ N
fr = μ mg
fr = 0.289 95.0 9.8
fr = 269 N
The friction force opposes the movement, so that at an angle it is 180º
W₂ = fr d cos T
W₂ = 269 12.3 cos 180
W₂ = - 3308.7 J
First you have to find the work, to do that, you have multiply the power and time.
56 x 19 = 1064 J
By doing this, you have the work. To find the distance, you have to divide the work by the force.
1064/46 = 23.13043478 m
You can round this answer to 23.13 m