Answer:
B. Objects do not have to touch each other to experience a force.
Explanation:
For example ..One of the noncontact forces is magnetic force whereby a magnetic object will be attracted to another magnetic object of oppsite charged particles, through waves called electromagnetic waves. On the other hand, the two magnetic objects of similar charged particles can repel through electromagnetic waves..
Hi!
I believe that there were the following options in this question:
<span>A) Which color bends the most to make a rainbow?
B) What color of scented marker has the best smell?
C) Which flower has the prettiest shade of purple on its petals?
D) What is the best-looking color on a high-performance sports car</span>
Now, options b), c) and d) are about a personal preference and opinion - they are not scientific uqestions.
The correct answer is a) - it asks about the properties of light.
Answer:
400 milli-rems
Solution:
As per the question;
Maximum energy of particle, ![E_{m} = 0.0186\ MeV](https://tex.z-dn.net/?f=E_%7Bm%7D%20%3D%200.0186%5C%20MeV)
Weight, w = 1 kg
Energy absorbed, E = ![4\times 10^{- 3}\ J](https://tex.z-dn.net/?f=4%5Ctimes%2010%5E%7B-%203%7D%5C%20J)
Now,
Equivalent dose is given by:
![D_{eq} = \frac{E}{w} =\frac{4\times 10^{- 3}}{1} = 4\times 10^{- 3}\ J/kg](https://tex.z-dn.net/?f=D_%7Beq%7D%20%3D%20%5Cfrac%7BE%7D%7Bw%7D%20%20%3D%5Cfrac%7B4%5Ctimes%2010%5E%7B-%203%7D%7D%7B1%7D%20%3D%204%5Ctimes%2010%5E%7B-%203%7D%5C%20J%2Fkg)
1 Gy = 1 J/kg
Also,
1 Gy = ![1\times 10^{5}\ milli-rems](https://tex.z-dn.net/?f=1%5Ctimes%2010%5E%7B5%7D%5C%20milli-rems)
Therefore,
Dose equivalent in milli-rems is given by:
![D_{eq} = 4\times 10^{- 3}\times 1\times 10^{5} = 400\ milli-rems](https://tex.z-dn.net/?f=D_%7Beq%7D%20%3D%204%5Ctimes%2010%5E%7B-%203%7D%5Ctimes%201%5Ctimes%2010%5E%7B5%7D%20%3D%20400%5C%20milli-rems)
Answer:
Explanation:
The remaining amount of a radioactive isotope is found as the product of the original amount by (1/2) raised to the number of half-lives elapsed. The formla is:
Where M is the remaining amoun, M₀ i s the initial amount, and n is the number of half-lives.
Here, 1/64 of the original carbon-14 remained, meaning that M/M₀ = 1/64.
Then, you can substitute in the equation and solve:
Then, 6 half-lives elapsed since the mastodon died and the remains were dated.
Then, you must multiply 6 by the <em>half-life </em>time:
- 6 × 5730 years = 34,380 years ← answer
<h3><u>Answer;</u></h3>
the one with the highest specific heat
<h3><u>Explanation;</u></h3>
- The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.
- The specific heat of water is 1 calorie/gram °C or 4.186 joule/gram °C which is higher than any other common substance.
- <em><u>A metal with the highest specific heat will cause the greatest increase in temperature of water in a calorimeter because the metal would hold more heat, and then transfer the greater quantity of heat to the water.</u></em>