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3 years ago

14

A 3 N force pushes on a object for 20 meters. Find the work done

1 answer:

astraxan [27]3 years ago

6 0

W = Fx

w = 3.20 = 60 N.m

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True or False: Chemical energy stored in food cannot be transformed into mechanical energy

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Answer:

5.5g of ice melts when a 50g chunk of iron at 80°C is dropped into a cavity

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The concept to solve this problem is given by Energy Transferred, the equation is given by,

$Q = mc\Delta T$

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m = mass of water

c = specific heat capacity

$\Delta T =$ Temperature change (K or °C)

Replacing the values where mass is 50g and temperature is 80°C to 0°C we have,

$Q = mc\Delta T$

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Then we can calculate the heat absorbed by m grams of ice at 0°C, then

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How Q_1=Q_2, so

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3 years ago

1. Is the relationship between velocity and centripetal force a direct, linear relationship or is it a nonlinear square relation

Svetllana [295]

Answer:

non linear square relationship

Explanation:

formula for centripetal force is given as

a = mv^2/r

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a = constant × v^2

a α v^2

hence non linear square relationship

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