One force of 100 units acts on an object. another force of 80 units acts on the object at a 40 degrees angle from the first force. find the magnitude of the resultant force?
a) 140 degree
b) 169.283 units
c) 28,656.711 units

B) 169.283 units

Step-by-step explanation:

Among the given answers, this is the only one that makes sense. A gives an option which is not what the question asks for. It asks for magnitude, not direction. C could not be the answer, as no function of the two forces would reasonably result in such a force. B is the only one which works in this situation.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

1. 523.33 cubic inches

2. 113.04 cubic inches.

3. 17.41.

4. 16.49

i think this should be your answer

hope i

-lavira : )