Which procedure could be used to demonstrate that matter is conserved during a physical change? *

1. Find the mass of an apple. Cut the apple and remove the core. Find the mass of the
Remaining apple.

2. Find the mass of a piece of ice. Let the ice melt. Find the mass of the liquid water.

3. Find the mass of a cup of water. Boil the water. Find the mass of the water that
remains.

4. Find the mass of a raw egg. Cook the egg. Find the mass of the cooked egg.

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.