31. Given that p() +9)=(8) i+ (%, where where p and q are constants, find the value of (p + q)
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Avoltaic cell converts chemical energy to

Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.