What are substances that have the same composition, but different structures, known as? a. Ions c. Allotropes b. Covalent twins d. Phenotypes

If an electrical neutral atom has 4 protons and 4 neutrons and it gains 2 electrons what is its electrical chargr

Two trucks are traveling in the same direction, one going twice as fast as the other. at the end of 6 hours they are 204 miles apart. how fast is each travelling?

Which physical unit represents acceleration in the British system O 40km, SW 0-120 miǙ O186000 m

What is the best analogy for the doppler effect?

A bus accelerates at - 0.5 m/s2 for 12.5 seconds. If the bus had an initial speed of 31 m/s, what is its new speed?

What is the unit for force we use when calculating F=ma?

A vector of magnitude 20 is added to a vector of magnitude 25. The magnitude of this sum. might be:. A. zero. B. 3. C. 12. D. 47. E. 50

Calculate the gravitational potential energy of a 10kg box on the top shelf of a closet, 2m above the floor

In late adulthood, changes in memory may bot be inevitable however, any decline in memory tends to invite

On october 15, 2001, a planet was discovered orbiting around the star hd 68988. its orbital distance was measured to be 10.5 million kilometers from the center of the star, and its orbital period was estimated at 6.3 days.