Question

1. which Of the following is pair of Coprimes ?
(a) (21,27)
(b) (14,64)
(c) (12,25)
(d) (41,123)

2. If HCF (570, 1425) = 285, then LCM (570, 1425) is
(a) 570
(b) 4275
(c) 1425
(d) 2850

3. Which of the following rational numbers have terminating decimal?

(i) 14/625 (ii) 17/270 (iii) 2/35
(iv) 7/400

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (i) and (iv)

PLEASE ANSWER ASAP

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Answer 1

Answer:

Appropriate Question:-

The output for a 60kg woman who runs up a 3m high flight of stairs in 3.5 sec.starting from rest but having a final speed of 2 m/s.

Given:-

Mass of woman=m=60kg.

Height=h=3m

Time=t=3.5secs.

To find :-

Here we want to calculate the output for a woman

Here first we should calculate work done first.

work \: done = mghworkdone=mgh

Applying the values,

work \: done = 10 \times 60 \times 3workdone=10×60×3

Work done= 1800Joule.

Now , lets calculate power,

power = \frac{workdone}{time \: taken}power=

timetaken

workdone

Now,

Applying the values ,

power = \frac{1800}{3.5}power=

3.5

1800

Power =514.2857 watt.

Hope it helps u mate .

Thank you .

Answer 2

Answer:

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