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All of the above. Poisonous items or substances that children might come into contact with include: Household cleaning products, Carbon monoxide, Pesticides and Toxic plants.

To calculate the horsepower required to lift a 50 kilogram mass to a height of 8 meters in 4 seconds, we need to use the following formula:

Power (in watts) = work/time

where work is equal to the force applied (in newtons) times the distance moved (in meters), and time is the duration of the work (in seconds).

First, we need to calculate the work done in lifting the mass:

Work = force x distance = (50 kg x 9.81 m/s^2) x 8 meters = 3,924 joules

Next, we need to calculate the power required:

Power = work/time = 3,924 joules / 4 seconds = 981 watts

To convert watts to horsepower, we divide by 746 (1 horsepower = 746 watts):

Power = 981 watts / 746 = 1.31 horsepower

Therefore, the horsepower required to lift a 50 kilogram mass to a height of 8 meters in 4 seconds is approximately 1.31 horsepower.

(Rumors) Whispers of doubt filled the empty halls like the reek of rotten eggs. -is the sentence which most effectively translates an abstract concept into a mental picture.