Power P is the rate at which energy is generated or consumed and hence is measured in units that represent energy E per unit time t. This is:
P = E/t
Solving for t:
t = E/P
t = 6007 J / 500 W
t = 12.014 s
<h2>
t ≅ 12 s</h2>
The mass fraction of the hydrogen atom is 0.9995 u.
<h3>Calculation:</h3>
We know that mass fraction can be determines as,
Mass fraction = Mass of proton/mass of H atom
Given,
Mass of proton = 1.007276 u
Mass of H atom = 1.007825 u
Put the values in the formula,
Mass fraction = Mass of proton/mass of H atom
Mass fraction = 1.007276/1.007825
= 0.9995 u
Hence, the mass fraction of the hydrogen atom is 0.9995 u.
Learn more about mass fraction here:
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1. The _________ of a wave is the density of the medium’s particles at the compression of the wave.
2. In which part of the wave are the particles of the medium closer together?
B)compressions
3. In sound waves, the distance between compressions is called the wavelength.
What is the distance between rarefactions called?
D)wavelength
4) A student takes notes in class.
Sound Waves
I. Created by a vibration
A. Vibration: something that causes air molecules to move
back and forth quickly and steadily
II. Move through a medium
A. Solid
B. Liquid
C. Gas
Which line of her notes contains an error?
C)II B
5)Which of these would most likely cause a sound wave?
C)a spoon hitting the side of a bowl while mixing
6)Allison wants to calculate the speed of a sound wave.
Which formula should she use?
D)distance traveled / time
7)When sound is created, it travels to the ear through a
B)medium.
8) Why do waves move faster at higher temperatures and in a solid phase?
D)There is more energy and the particles are closer together.
Answer:
The correct option is;
a) Mike, he is within his target heart rate zone
Explanation:
The Target Heart Rate Zone (THRZ) is the range of the percentage of a person's maximal heart beat rate (MHR) targeted to be achieved during exercising. It is a very good way to gauge the comparative intensity of a person's exercise
Whereby, Joe's heart beat rate is below his THRZ and Mikes heart beat rate is within his THRZ, Mike is working harder.
Hence the correct option is (a) Mike, he is within his target heart rate zone.
