Amachine called feynman, produces output, that is 5 times its input followed by an increase of 2. another machine called maxwell, produces output, that is 5 times its input followed by a decrease of 2. the output of feynman feeds into maxwell. if maxwell produces an output of 33, the input to feynman must be:
(a). 1
(b). 31/5
(c). 41/25
(d). 21/25

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

    =4300/3.3

    =1303.03kg

The answer is in the image 

Speed=Distance/time

Here,

distance=15m

time=1sec

speed=15/1=15m/sec

Distance=Speed*time

time=15min=15*60sec=900sec

Distance travelled in 15 min=15*900=13,500m

=13500/1000 km=13.5Km

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

The answer is in the image 

The answer is in the image 

(​1 or 7) ; number of possible outcome = 2

(a, e,​ i, o, or​ u) ; number of possible outcome = 5

So,

Number of possible outcomes = 2 x 5

Number of possible outcome =10

The answer is in the image 

III is the case of joint variation as Area A depends on l and w

In I and II it depends on s and r respectively as pi is constant