A guy standing in a swimming swimming pool weighs less due to the fact that water partially shields the from the full pressure of gravity.

the buoyant pressure is same to fifty percent the weight of the block.the load of the block is the same as the of the displaced water.the volume of the block is the very same as the of the displaced water.the buoyant force is equal to double the weight of the displaced water.the buoyant force is equal to double the load of the block.
changing the volume of the object, without changing its weight.changing the load of the object, without an altering its volume.changing the thickness of the fluid.Two that the above answers are correct.
There is a buoyant force on a volume of hotter air, but there is no a buoyant pressure on a volume the cooler air.The gravitational pressure pulls more difficult on every kilogram that cooler air than it go on a kilogram of warmer air.The buoyant pressure on the hotter air is upward, when the buoyant force on the cooler wait is downward.The warmer air has a lower weight every unit volume 보다 the cooler air which it displaces.The warmer air has a higher weight every unit volume 보다 the cooler wait which it displaces.
The base of a dam is reinforced in instance the pressure boosts in the future. Which of the complying with would cause such one increase?
An increase in the volume that water going through the dam's spillway.A adjust of climatic patterns that would boost the lake's depth end the next several years.An excavation the a next canyon to boost the lake's area.A big number of boats creating larger wakes that will hit the dam with better force.

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Which exerts the biggest amount of pressure on the gound? (Note: in all cases water has been removed or included to store the water level the very same for every options.)
A swim pool full of water.An similar swimming pool complete to the specific same level v a 200-lb log in floating top top top.An the same swimming pool complete to the precise same level through two 170-lb civilization floating in it.An identical swimming pool complete to the precise same level v a 50-lb block sit on the bottom.