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Alenkasestr [34]
4 years ago
9

A person who chooses a chicken leg that provides 0.5 milligram of iron and 95 kcalories instead of 2 tablespoons of peanut butte

r that also provides 0.5 milligram of iron but 188 kcalories is using the principle of nutrient:a. control.b. adequacy.c. density.d. moderation.
Physics
1 answer:
Leto [7]4 years ago
5 0

Answer:

c. Density.

Explanation:

The principle of nutrient used here is Density. Here the person had two options either he could choose chicken leg or 2 tablespoon of peanut butter both provide 0.5 milligram of iron.

But since he wanted less calorie intake he chooses chicken leg as the calorie intake from peanut butter was almost twice from butter than from the chicken.  hence option is correct.

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Some wave characteristics depend upon how the wave is produced. other wave characteristics depend upon the properties of the med
Anastaziya [24]

Waves have the characteristic that they can of transmit energy. This characteristic depend only on the medium and its properties. Electro-mechanical waves do not need medium to transfer its energy, is capable of transmitting it through empty space (vacuum).

<span>Mechanical waves require a medium in order to transport their energy. Sound waves are an example of mechanical way. They can  not travel through vacuum. </span>



3 0
3 years ago
What is the velocity of the car, in meters per second, just after it hits a 135-kg deer initially running at 10.5 m/s in the sam
Gnom [1K]

Answer:

V = 27.46 m/s

Explanation:

given,

mass of the deer(m) = 135 Kg

speed of the deer (u) = 10.5 m/s

assuming,

mass of the car(M) = 900 Kg

initial velocity of car (v) = 30 m/s

using conservation of momentum

m u + M v = (M + m )V

V is the velocity of the car as deer is on the car

135 x 10.5 + 900 x 30 = (900 + 135 ) V

28417.5 = 1035 V

V = 27.46 m/s

so, the velocity of car is equal to V = 27.46 m/s

5 0
4 years ago
Determine the farthest away a car can be at night so that your eyes can resolve the two headlights. Assume that the the diameter
Zigmanuir [339]

Answer:

The farthest distance is L_{max}=11.48 km

Explanation:

The angular resolution is mathematically represented as

              \theta = \frac{Z}{L} = \frac{1.22 \lambda}{d}

Where Z is the distance between the car head lamp with a value Z = 1.4 m

L is the distance between the eye and the car

\lambda is the wavelength  with a value 500 nm = = 500 *10^{-9}m

d is the diameter of the eye with a value  d = 0.50 cm = = \frac{0.50}{100} = 0.005m

   The maximum distance L_{max} is given as

              L_{max} = \frac{(1.4) *0.005}{1.22 * (500 *10^{-9})}

                       = 11.48*10^{3}m

                        =11.48 km

             

rrrrrrr

8 0
4 years ago
How can Newton's third law describe the forces affecting a rocket as it
rusak2 [61]

Answer:D

Explanation:

Apex

7 0
4 years ago
The concrete slab of a basement is 11 m long, 8 m wide, and 0.20 m thick. During the winter, temperatures are nominally 17°C and
mina [271]

Answer:

\frac{dQ}{dt}= 4312 W

Explanation:

As we know that base of the slab is given as

A = 11 \times 8

A = 88 m^2

now we know that rate of heat transfer is given as

\frac{dQ}{dt} = \frac{kA}{x} (T_2 - T_1)

here we know that

k = 1.4 W/m k

Also we have

x =0.20

\frac{dQ}{dt} = \frac{1.4(88)}{0.20}(17 - 10)

\frac{dQ}{dt}= 4312 W

7 0
3 years ago
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