John measures the mass of a cup of chocolate milk and a glass of orange Juice. He places both containers on a balance scale. He observes that the scales tips fower towards the cup of chocolate milk. He concludes that the chocolate milk has a greater mass. What statement best describes the error in John's measurement? (2 points)
Only solids have mass so comparing the mass of two liquids is not possible.
John can only compare the mass of two liquids that are the same.
John has to pour each liquid into a container with the same mass and then compare them
The liquids need to be poured into the same container
accurately compare them

b. John has to pour each liquid into a container with the same mass and then compare them

would be the correct answer.  Hope this helps!

Explanation:

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j