Examlex
A magnifying glass with focal length 15 cm is placed 10 cm above a stamp.The image of the stamp is located 30 cm above the magnifying glass.
Oxide Minerals
Minerals composed of oxygen and one or more metals, common in the Earth's crust and important in various geological processes.
Calcite
A common mineral form of calcium carbonate, CaCO3, often found in sedimentary rocks such as limestone.
Covalent Bonds
Chemical bonds formed by the sharing of electron pairs between atoms.
Intermolecular Bonds
Forces of attraction or repulsion between molecules, crucial for determining the physical properties of substances.
Q28: The half-life of uranium-232 is 70 years.
Q41: The light directly from the Sun is<br>A)
Q71: If the speed of a continuous wave
Q92: How small an object can a scanning
Q110: The distance between two successive 'like' points
Q111: The frequency of visible light determines its
Q119: From the point of view of an
Q120: The aurora borealis is an example of
Q125: Some antiparticles are identical to the particles
Q125: All three types of particles found in