I'm pretty sure its D. Both B. and C.
P= 10m = 10 x 180 = 1800 N
work is done by the weightlifter in lifting the barbells :
A= Ph = 1800 x 1.95 = 3510 J
ok done. Thank to me :>
Answer:
Option D
X: positive
Y: positive
Explanation:
They repel each other so both the charged particles will have same charge.
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