Which statement is consistent with the findings from the lab in this lesson?
a. the density of the ball was 0.45 g/cm3, so it was made of scrap rubber. therefore, it could not be from the maya civilization.
b. the density of the ball was 1.1 g/cm3, so it was made of soft commercial rubber. therefore, it could be from the maya civilization.
c. the density of the ball was 0.90 g/cm3, there is insufficient evidence to narrow the type to caoutchouc. therefore, it could not be definitively said to be maya.
d. the density of the ball was 1.2 g/cm3, so it was made of a hard rubber. therefore, it could not be from the maya civilization.

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron

An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.

Which of the following describes how a microwave heats food