Vicky wanted to investigate water evaporation. she placed 50 ml of distilled water in three identical glass jars. she left one jar in the sunlight, one jar in the dark, and one jar in a shady area. after four hours, she measured how much water was still in each jar. which of the following variables was held constant in the experiment?

What is the angular momentum of the bar about the axle?

Which missing item would complete this alpha decay reaction ? > 228/88ra + 4/2he a.224/96 rn b. 232/90 th c. 230/92 u d. 235/92 u

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c