Let the total weight of the body be = x
Let the weight of the heart of the mammals be = y
Now the given percentage of 0.5 %, we will convert it into decimal form,
so this is equal to 0.005 in decimal form,
so the linear equation that gives the heart weight in terms of body weight will be,
y = 0.005x
None of the energy is created nor destroyed
The horizontal component of the velocity is equal to: D. 15 m/s.
<u>Given the following data:</u>
To determine the horizontal component of the velocity:
The horizontal component of the velocity represents the influence of velocity in displacing an object or projectile in the horizontal direction.
Mathematically, the horizontal component of velocity is given by the formula:

Substituting the given parameters into the formula, we have;

Horizontal component, Vx = 15 m/s
Read more on horizontal component here: brainly.com/question/24681896
You look up the element in the periodic table. Subtract the atomic number (small number) from the mass number (big number). The answer is the number of neutrons.