In chemistry class, you are given 3 liquids: liquid a, liquid b, and liquid c. they are each in their own beaker. one of these liquids is water which has a denisty of 1.0 g/ml. you also have an ice cube with a density of 0.92 g/ml, and a piece of cork with a density of 0.85 g/ml when all 3 liquids are mixed together, liquid b is on the bottom. the ice cube will float in b and sink in the other two liquids. a piece of cork will float in liquid a but sink in liquid c. what is the approximate density of liquid a?
a. less than 0.85 g/ml
b. between 0.92 g/ml and 1.0 g/ml
c. greater than 1.0 g/ml
d. between 0.85 g/ml and 0.92 g/ml

A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off

Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?