Do you think MyPyramid and MyPlate are effective tools for encapsulating the keys to a healthy diet? How would you improve it?

Physics

1 answer:

nadezda [96]4 years ago

6 0

Answer:

MyPyramid was released by USDA Center for Nutrition Policy and Promotion under which guidance were given on using proper food groups in one's diet. The consumers had the visit the website for getting information on nutrition.

MyPlate is an effective app which aims to build healthy eating habits in it's users.

I believe, MyPlate, is an excellent app which divides foods into four sections, grains, vegetables, fruits and proteins. However, the app can be made better if it can make a diet plan according to each person.

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beks73 [17]

Answer:

a. the force between them quadruples

Explanation:

The electrostatic force between two charges is given by

$F=k\frac{q_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1 and q2 are the two charges

r is the separation between the two charges

In this problem, the charges on both objects are doubled, so

$q_1' = 2q_1\\q_2' = 2q_2$

While the distance does not change, so the new force will be

$F'= k \frac{(2q_1)(2q_2)}{r^2}=4 (k\frac{q_1 q_2}{r^2})=4 F$

so, the force will quadruple.

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3 years ago

Un objeto de 200 gramos está amarrado del extremo de una cuerda y gira describiendo un círculo horizontal de 1.20 m de radio a r

vesna_86 [32]

Answer:

La tensión es 85.3 N.

Explanation:

Cuando el objeto gira en dirección horizontal, la sumatoria de fuerzas se puede calcular usando la segunda ley de Newton:

$\Sigma F_{x} =ma_{c}$

$T = ma_{c}$

Dado que el movimiento es horizontal, el peso (que está en el eje y) no contribuye en la sumatoria de fuerzas en el eje x. Por lo que la única fuerza actuando sobre el objeto en la dirección del movimiento es la tensión.

En donde:

m: es la masa del objeto = 200 g = 0.200 kg

$a_{c}$ : es la aceleración centrípeta