has a longer wavelength than x- rays and gamma rays, has a shorter wavelength than infrared and visible light, as the frequency of the wave increase its wavelength decrease
The Volume and the density of the box are 480 in³, 7865.81 cm³, 0.127 g/mL
<h3>What is volume?</h3>
This is the measure of the capacity of substance an object can hold.
To calculate the volume of the box, we use the formula below
Formula:
- V = LWH................. Equation 1
Where:
- V = Volume of the box
- L = Length of the box
- W = Width of the box
- H = Height of the box.
From the question,
Given:
- L = 10 inches
- W = 8 inches
- H = 6 inches.
Substitute these values into equation 1
We convert the volume from cubic inches to cubic centimeters using the expression below.
- V = (480×16.3871) = 7865.81 cm³
<h3>What is density?</h3>
Density can be defined as the ratio of the mass and volume of a body.
To calculate the density of the box, we use the formula below.
- D = m/V.................. Equation 2
From the question,
Given:
- m = 1 kg = 1000 g
- V = 480 in³ = (480×16.3871) milliliter = 7865.81 mL
Substitute these values into equation 2
- D = 1000/7865.81
- D = 0.127 g/mL
Hence, The Volume and the density of the box are 480 in³, 7865.81 cm³, 0.127 g/mL.
Learn more about Density here: brainly.com/question/952755
Answer:
Considering the half-life of 10,000 years, after 20,000 years we will have a fourth of the remaining amount.
Explanation:
The half-time is the time a radioisotope takes to decay and lose half of its mass. Therefore, we can make the following scheme to know the amount remaining after a period of time:
Time_________________ Amount
t=0_____________________x
t=10,000 years____________x/2
t=20,000 years___________x/4
During the first 10,000 years the radioisotope lost half of its mass. After 10,000 years more (which means 2 half-lives), the remaining amount also lost half of its mass. Therefore, after 20,000 years, the we will have a fourth of the initial amount.
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