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olchik [2.2K]
3 years ago
8

In The United States how much more sugar is the average person consume each year that in 1970?

Physics
1 answer:
zmey [24]3 years ago
7 0

In the 1970, the average American ate only 2 pounds of sugar a year. In 1970, we ate 123 pounds of sugar per year. Today, the average American consumes almost 152 pounds of sugar in one year. This is equal to 3 pounds (or 6 cups) of sugar consumed in one week!

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300

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100 x 3 =300 simple and easy

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What is the net electrical charge on a magnesium ion that is formed when a neutral magnesium atom loses two electrons?
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Read 2 more answers
zanele has a mass of 40kg and is sitting inside a 20kg cart .zanele's friends pull a cart with a force of 500N at an angle of 20
Dmitriy789 [7]

The net horizontal force acting on the cart is 169.85 N.

The change in the carts momentum is 5,000 Ns.

The net horizontal force on Zanele is same as the net horizontal force on the cart.

If angle between the 500N force and the horizontal is decreased, the final velocity of the cart increases.

The given parameters:

  • Mass of zanele, m1 = 40 kg
  • Mass of the cart, m2 = 20 kg
  • Applied force, F = 500 N, at angle 20 degrees
  • Frictional force on the cart, Ff = 300 N
  • Time, t = 10 s

<h3>Net horizontal force on the cart;</h3>
  • The net horizontal force acting on the cart is calculated as follows;

F_{net} = F - F_f\\\\F_{net} = 500 \times cos(20) - 300\\\\F_{net} = 169.85 \ N

<h3>Change in momentum;</h3>
  • The change in the carts momentum at the given time of applied force is calculated as follows;

\Delta mv = Ft  \\\\\Delta mv = 500 \times 10= 5,000 \ Ns

The net horizontal force on Zanele is same as the net horizontal force on the cart.

<h3>The final velocity of the cart;</h3>
  • When the angle decreases the cart's final velocity would be affected  as follows;

F_{net} = F - F_f\\\\F_{net} = \frac{mv}{t} \\\\\frac{mv}{t} =  F - F_f\\\\  \frac{mv}{t} =  Fcos(\theta) - F_f\\\\let \ \theta  = 0^0\\\\\frac{mv}{t} =500 \times cos(0) - 300\\\\\frac{mv}{t} = 200\\\\v = \frac{200 t}{m} \\\\when \ \theta = 20^0\\\\\frac{mv}{t} =500 \times cos(20) - 300\\\\\frac{mv}{t} = 169.85\\\\v = \frac{169.85t}{m}

Thus, if angle between the 500N force and the horizontal is decreased, the final velocity of the cart increases.

Learn more about net horizontal force here: brainly.com/question/21684583

5 0
3 years ago
What's a definition of caught​
disa [49]

Answer:

past and past participle of catch.

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3 years ago
A 60.watt light bulb runs for 5.0 seconds. How much energy does it use?
VikaD [51]

"watt" means "Joule of energy per second"

"60 watts" means "60 Joules per second"

(60 joules per second) x (5 seconds) = <em>300 Joules of energy</em>

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