The correct answer is Upthrust= 0.7N and Volume = 1.02 x 10⁻² g
Solid weighs.09 N in air.
Solid weighs less than liquid because of an upward force operating on it (solid weighs in liquid =.02 N).
A solid body experiences an upthrust when it is partially or entirely submerged in a fluid, such as water. In this case, the fluid's weight (water) equals the fluid's weight that the water has displaced.
upthrust is = to.09 -.02 N = 0.7N.
Upthrust = displaced liquid's weight
so that weight of liquid equal to volume of solid = 0.7 N
Volume of solid times mass of liquid = 0.07/9.8 = 0.00714 = 7.14 x 10⁻³ kg
Volume = Mass / density
Volume = 7.14 x 10⁻³ / 700
= 1.02 x 10⁻⁵ kg= 1.02 x 10⁻² g
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