I remember finding the isotope number, Nitrogen-20 by adding the Protons and Neutrons, then I get a new atomic mass. But on here Pottasium-15 is confusing! What neutrons do I add from 19 protons to get 15? Sometimes the teacher throws in impossible problems.
super super late ans but im up late n looking 4 interesting Qs...
Potassium-15 is confusing indeed! What neutrons can one add to a nucleus with 19 protons to get a mass of 15? anti-matter cannot do it as scientists have generally agreed that anti-matter has the same mass as regular matter but with an opposite spin.
the ans actually doesnt exist when the Q was originally asked but in 2017, Washington State University physicists created a fluid with negative mass. so theoretically a "negative neutron" will have a mass of -1. combining 4 of such exotic particles to 19 protons will create K-15; assuming there is no explosion from the combination.
Hi there!
The angular velocity is equivalent to:
Take the derivative using the power rule:
The angular acceleration is equivalent to:
Differentiate once again:
Answer:
SORRY IDK BUT THX
Explanation:
b. finding a four leaf clover is lucky
c. breaking a mirror brings bad weather
d. sudden fall in air pressure affects weather
d. sudden fall in air pressure affects weather...common man
Answer:
Duhhh... It's d.
Explanation:
2. The Moon takes 27.25 days to make one revolution around the Earth. Calculate how
many seconds it takes for the Moon to make one revolution around the Earth.
Answer:
1. 15.64 m/s
2. 2,354,400 seconds
Explanation:
1. 1mile is equivalent to 1609metres and 1hour is equivalent to 3600sec.
35mph = (35×1609)/3600
= 56315/3600
= 15.64 m/s
2. Note that 1 day ===> 24hrs
60min ==> 1hr
60sec ===> 1min
Thus 27.25 days = 27.25×24×60×60
= 2,354,400 seconds
Answer: Earth would become too hot.
Earth would eventually stop receiving heat.
Earth would become too cold.
Earth would lose all of its own heat.
Explanation:
Answer: EARTH WILL BECOME TO COLD
Explanation: