A horizontal board of negligible thickness and area 2.0 m2 hangs from a spring scale that reads 80 N when a 4.0 m/s wind moves beneath the board. The air above the board is stationary. What does the scale read when the wind stops? The density of air is 1.25 kg/m3 .

Scale reading for no wind

Explanation:

From the question we are told that

Area

Weight of board

Velocity

Density of air

Generally the equation for pressure difference by Bernoulli equation is mathematically given by

Generally force acting on the board by air is mathematically given by

Therefore

Scale reading for no wind W'

Scale reading for no wind W'=60N

carla slowed down in the beginning of her trip, stopped, and then sped up

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.