You are given a marble by your instructor and are asked to measure its density. Unfortunately, marbles roll when placed on a balance pan, so you decide to use a beaker to hold the marble while you measure its mass. An empty beaker has a mass of 31.86 g. You place the marble into the beaker and find a new mass of 42.96 g. You then drop the marble into a graduated cylinder that contains 26.7 mL water and record the new volume of water as 29.7 mL. What is the density of the marble

Groups of organs that work together to complete a process in the body are called: a. cells b. tissues c. nerves d. systems

Isla’s change in velocity is 30 m/s, and hazel has the same change in velocity. which best explains why they would have different accelerations? isla had negative acceleration, and hazel had positive. isla had a different time than hazel. isla had positive acceleration, and hazel had negative. isla went a farther distance than hazel.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?