12. How can pulleys be used together in a system to increase mechanical advantage

Lines of a particular element appear at the same wavelength in both emission and absorption line spectra. True or False

How do scientist tell the difference between two isotopes of the same element?

How are science and technology related?

What is the absolute value of the horizontal force that each athlete exerts against the ground?

What key ingredient in the modern condensation theory was missing or unknown in the nebula theory?

What is the total number of atoms in the following formula? CaBr2 4 3 2 1

Object A with a mass of 500 kilograms hits stationary object B with a mass of 920 kilograms. If the collision is elastic, what happens after the collision? A) Both object A and object B move forward but with different velocities.

A young man walks daily through a gridded city section to visit his girlfriend, who lives m blocks East and nblocks North of where the young man resides.

Aliens from planet Moby have three alleles for skin color: R (red) W (white) and B (Blue). If all of these alleles are codominant and aliens on planet moby can only inherit two alleles for a gene, what are the six possible genotypes for skin color

The difference between two numbers is 15. When twice the smaller number is subtracted from three times the larger number, the difference is 58. What is the larger number?