Ageologist needs to measure the density
of an irregularly shaped pebble.

a describe how she can find its volume by the method of displacement.

b what other measurement must she make if she is to find its density?

To find the volume of an irregularly shaped object, you need to use a measuring cylinder.

The measuring cylinder is filled with water up to a particular level and this volume is recorded. The irregularly shaped object is now added and the increase in the new volume of the water is noted.

The volume of the irregularly shaped object now becomes;

New volume of water - original volume of water.

The scientist must also measure the mass of the pebble since density is given as mass/volume.

The mass is measured using a spring balance.

link

density = mass / volume

use a eureka can to find the volume The can is filled to the top with water and the object placed in it. The volume of the object is equal to the volume of the water that is forced through the spout.

use a balance to find the mass (in kg)

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.