Magnitude of force= |F|= 5 lb
In the direction of vector,let say M=5i-3j
As, we know that vector consists of magnitude and direction( unit vector)
F=|F| M(unit vector).........1
In order to find the unit vector, divide the vector M by its magnitude.
M(unit vector)=(5i-3j)/√34
Now, the eq. 1 becomes
F=5(5i-3j)/√34
F=(25i-15j)/√34
As, the object moves from point let say P=0i+6j to Q=7i-4j
so,
PQ=Q-P
=(7-0)i+(-4-6)j
=7i - 10j
So,
W= F.PQ
=((25i-15j)/√34).(7i-10j)
=(7*25/√34)+(-10*-15/√34)
=55.7 lb*ft
=56 lb*ft
Option C is correct
Answer:
Im pretty sure its the 4th one (bottom right hand corner)
Step-by-step explanation:
Answer:
?=91 degrees.
Step-by-step explanation:
There is no x- I'll find ? though.
So, angles in a triangle must equal 180.
180-29-62=89. The last angle in the triangle is 89 degrees.
A straight angle is equal to 180 degrees. ? + 89=180.
180-89=91.
?=91 degrees.
Hope this helped!
Answer: 90 degrees, 43 minutes, 16 seconds
Step-by-step explanation: To convert from decimal degrees to degrees minutes and seconds, the whole number part which is 90 is the degree, then multiplying the decimal part (0.721) by 60 gives the minutes which is 43 and finally multiplying the remaining decimal (0.26) by 60 gives the seconds which is approximately equal to 16
Answer:
12
Step-by-step explanation:
According to Euclidian theorem h^2 = 3*x (h : height)
36 = 3x divide both sides by 3
12 = x
