Answer:
The correct answer is: macronutrients.
Explanation:
Nutrients are chemical substances found in food that, when consumed, allow the development, maintenance and functioning of our body.
Every time you eat a food, your body assimilates, transforms and takes advantage of its nutrients in order to live.
No single food can provide us with all the nutrients that the body needs. Only a healthy, varied and balanced diet will do it.
Types of nutrients
:
Nutrients can be essential (the body cannot synthesize them on its own and we must acquire them through food) or non-essential (our body produces them from other components). According to their proportion they are divided into
:
- macronutrients: they occupy most of the food and are consumed in grams. They are carbohydrates or carbohydrates (sugar, vegetables, fruit, cereals, etc); proteins (meat, fish, eggs, milk, etc.), fats or lipids (oils, seeds, nuts, milk and derivatives).
- micronutrients: we take them in micrograms. In this group we find vitamins and minerals. The main source is fruits and vegetables, although we also get them from most foods.
Water is another essential nutrient, without which we could not live and that helps all the physiological processes of the body to take place.
Nutrients are classified into:
-Energy nutrients: provide the energy the body needs to function. Macronutrients are the main source of energy. Among these are carbohydrates and fats and to a lesser extent proteins.
-Plastic nutrients: involved in the construction of body structures, maintenance and repair of tissues. Proteins and mineral salts belong to this group.
-Regulatory nutrients: participate in the body's regulatory processes. They are vitamins and minerals.
p = mv so this question pertains to conservation of momentum.
The momentum of the car is 1320*12 = 15840kgms^-1
For the sake of easiness and the fact negatives are annoying, I will assume east to be positive.
So we know 9.4m - 15840 = (1320+m)*1.5
9.4m - 15840 = 1980+1.5m
Rearranging to solve for m
7.9m = 17820
m = 2255.70 = 2300kg to 2sf
Answer:
N = 731 N
Explanation:
From the question, we recall the following
The mass m = 250 kg
The initial kinetic energy T₁ = 0
The initial kinetic energy T₂ = 1/2 mv²
velocity = v at B
thus,
The work is carried out because of the weight
so,
U₁→₂ = W * h
= (250 * 9.81) * (27 m - 27 cos 40 m)
which is =15491.95 N.m
From the energy principle - from work
T₁ + U₁→₂ = T₂
We can say,
0 + 15491.95 N.m = 1/2 * 250 kg * v²
v = 11.13 m/s
Now we solve for the normal acceleration
aₙ = v²ρ = (11.13 m/s)²/27 m
aₙ = 4.588 m/s²
Now, by applying the second law
∑Fy = -maₙ
or we say that, N - W cos 40° = -maₙ
so,
N = 250 * 9.81 N cos 40° - 250 kg * 4.588 m/s²
Therefore N = 731 N
At the beginning of a basketball game, a referee tosses the ball straight
up with a speed of 4.6 m/s. a player cannot touch the ball until after it reaches its maximum height and begins to fall down. what is the minimum time that a player must wait before touching the ball? s
-----------------------
kinemaic equation
v=u-at
0=4.6-9.81xt
t=4.6/9.81 ... about half a second
The entire universe would be destroyed. The earth wouldn't be affectedly it until 9 minutes after the explosion