Answer:
725.2 N
Explanation:
Since it is not stated the scale, the person or both accelerated or experience weightlessness, the net force acting on the bathroom scale is the weight of the person acting downward as the person stands on the scale .
Weight = mass of a body × acceleration due to gravity
= 74 kg × 9.8 m/s²
= 725.2 N
Answer:
432 units
Explanation:
Let the charges be q and Q separated by a distance r. The electrostatic force , F = kqQ/r² = 72 units. If q = 2q and Q = 3Q, then the new electrostatic force is
F = k × 2q × 3Q/r² = 6kqQ/r² = 6 × 72 = 432 units
I’m sorry I don’t understand this language
Answer:
(2/3) times height collision occur
Explanation:
for ball A
from the kinematic equation
the distance of ball A is
= velocity ( time ) = distance
since ball is at height, the above equation changes as
for ball B
the condition of collision is
xA = xB
(given)
from the kinematic equation
the speed of the ball A is
since initial speed of the ball A is zero
, so
the speed of the ball B is
since
since 
so, (2/3) times height collision occur
