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Artyom0805 [142]
3 years ago
7

Which of the following describes resistance force?

Physics
2 answers:
Shtirlitz [24]3 years ago
6 0
A strong power against doing something.

Resistance- not willing ; against

Force- power; strong thing
Verdich [7]3 years ago
5 0
Force applied by the machine to over come resistance
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What is the energy released in this B- nuclear reaction 2K-> 2Ca0,e? (The atomic mass of 42 K is 41.962403 u and that of 42Ca
Katyanochek1 [597]

<u>Answer:</u> The energy released in the given nuclear reaction is 3.526 MeV.

<u>Explanation:</u>

For the given nuclear reaction:

_{19}^{42}\textrm{K}\rightarrow _{20}^{42}\textrm{Ca}+_{-1}^{0}\textrm{e}

We are given:

Mass of _{19}^{42}\textrm{K} = 41.962403 u

Mass of _{20}^{42}\textrm{Ca} = 41.958618 u

To calculate the mass defect, we use the equation:

\Delta m=\text{Mass of reactants}-\text{Mass of products}

Putting values in above equation, we get:

\Delta m=(41.962403-41.958618)=0.003785u

To calculate the energy released, we use the equation:

E=\Delta mc^2\\E=(0.003785u)\times c^2

E=(0.003785u)\times (931.5MeV) (Conversion factor: 1u=931.5MeV/c^2 )

E=3.526MeV

Hence, the energy released in the given nuclear reaction is 3.526 MeV.

7 0
4 years ago
A heater has resistance of 10 ohms. It operates at 120 volts. a. What is the current through the heater?​
Natali5045456 [20]

Answer:

  I = 12 A

Explanation:

For this exercise we use the relationship that voltage is proportional to the product of current and resistance

           V = I R

            I = V / R

             

let's calculate

            I = 120/10

            I = 12 A

4 0
3 years ago
Carbohydrates are the main building block of tissues and organs. True False
svetlana [45]

That statement is false.

Proteins are.

4 0
3 years ago
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A ford F-250 pulls a 1000-kg car with a net force of 2000 N. What is the acceleration of the car A=F/m
vfiekz [6]

Answer:

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Explanation:

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If you're on the orbiting International Space Station with a box of feathers and a box of sand, how could you tell which is whic
const2013 [10]

Answer:

Poke or kick the boxes. The sand box is the one that resists the most

Explanation:

The one that resists the most a change in motion (inertia) is the one with the greater mass—the  one filled with sand. Since we cannot open the boxes or perform any weight measurement we can distinguish them by their inertia. Sand has greater mass and thus greater inertia

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3 years ago
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