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11111nata11111 [884]
4 years ago
9

________ is defined as physical, social, and economic access to sufficient, safe, and nutritious food to meet dietary needs and

food preferences needed for an active and healthy lifestyle.
Physics
1 answer:
xxMikexx [17]4 years ago
6 0

Answer:

Food security.

Explanation:

Food security is defined as the condition which exists when all the  people, have economic, physical and social  access to appropriate art all the time , safe and nutritious food will be available for  their diet and there is always a preferences of food  for an healthy and active  life.

When all the people have both economic and physical access to food which is sufficient for their diet than people will lead healthy and active lifestyle. This is done by food security.

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For a person with a Near Point (NP) = 45 cm, what would be his prescription's lens power = _________ diopters A) 1.08 diopters
natita [175]

Answer:

The power of lens is 2.22 D.

Explanation:

Given that,

Distance of image v= 45 cm

We know that,

Distance of object u= ∞

Power of lens is the reciprocal of focal length.

P=\dfrac{1}{f}

We need to calculate the power of lens

Using formula of lens

\dfrac{1}{f}=\dfrac{1}{v}+\dfrac{1}{u}

Where, f = focal length

v = image distance

u = object distance

Put the value into the formula

\dfrac{1}{f}=\dfrac{1}{45}+\dfrac{1}{\infty}

\dfrac{1}{f}=\dfrac{1}{0.45}+0

P=\dfrac{1}{f}=2.22

Hence, The power of lens is 2.22 D.

7 0
3 years ago
At time t=0 a positively charged particle of mass m=3.57 g and charge q=9.12 µC is injected into the region of the uniform magne
larisa [96]

Answer:

10.78 s

Explanation:

The force on the charge is computed by using the equation:

F^{\to}= qE^{\to} +q (v^{\to} + B^{\to}) \\ \\  F^{\to} = (9.12 \times 10^{-6}) *278 (-\hat k) +9.12 *10^{-6} *2.1 *0.18 (\hat i * \hat k) \\ \\  F^{\to} = -2.535 *10^{-3} \hat k -3.447*10^{-6} \hat j

F = ma

∴

a ^{\to}= \dfrac{F^{\to}}{m}

a ^{\to}= \dfrac{-1}{3.57\times 10^{-3}}(2.535*10^{-3}\hat k + 3.447*10^{-6} \hat j)

a ^{\to}=-0.710 \hat k -9.656*10^{-4} \hat j

At time t(sec; the partiCle velocity becomes v(t) = 3.78 v_o

The velocity of the charge after the time t(sec) is expressed by using the formula:

v^{\to}= v_{o \ \hat i} + a^{\to }t \\ \\  \implies (2.1)\hat i -0.710 t \hat k -9.656 \times 10^{-4} t \hat j = 3.78 v_o \\ \\ \implies (2.1)^2 +(0.710\ t)^2+ (9.656 *10^{-4}t )^2 = (3.78 *2.1^2 \\ \\ \implies 4.41 +0.5041 t^2 +9.324*10^{-7} t^2 = 63.012 \\ \\ \implies 4.41 +0.5041 t^2 = 63.012\\  \\  0.5041t^2 = 63.012-4.41 \\ \\ t^2 = \dfrac{58.602}{0.5041} \\ \\ t^2 = 116.25 \\ \\ t = \sqrt{116.25} \\ \\  \mathbf{t = 10.78 \ s}

8 0
3 years ago
Is Experience Nature or Nurture
Stella [2.4K]

Answer:

Nature

Explanation:

6 0
4 years ago
What is the name of the stress caused by a pulling gravitational force?​
Simora [160]

Answer:

Weight

Weight ( ) is a force, measured in newtons ( ). Weight is caused by the pull of gravity acting on a mass, usually near the surface of a planet.

Explanation:

7 0
3 years ago
Read 2 more answers
The speed of sound I gases depends on <br> a humidity <br> b air<br> c temperature <br> d visibility
Mazyrski [523]

The speed of sound in gases is represented mathematically as:

v(sound)  = √γRT/M

where γ = adiabatic constant which is the ratio of the heat capacities at constant pressure and constant volume; Cp/Cv

R = gas constant

T = temperature

M = molar mass of the gas

Hence, the speed of sound in gas is directly proportional to the square root of temperature.

Ans: c) temperature

4 0
3 years ago
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