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Nata [24]
2 years ago
11

⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️

Physics
1 answer:
zloy xaker [14]2 years ago
6 0

Answer:

its all black I cant see the image can you re upload it

Explanation:

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Consider a car moving at a constant velocity. Recall that, for any object to move at a constant velocity, the net force acting o
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For any object to move at a constant velocity, the net force acting on the object must be ZERO.

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A beam of electrons is accelerated from rest through a potential difference of 0.400 kV and then passes through a thin slit. Whe
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the deflected energy eV sin θ

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What affects the vertical velocity of a projectile over time?<br>---​
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2 years ago
A loaf of bread is removed from an oven at 350° F and cooled in a room whose temperature is 70° F. If the bread cools to 210° F
jasenka [17]

Answer:

The bread will take 216.40 minutes to cool to 185°F

Explanation: Newton law of cooling

states that the rate of cooling of an object is inversely proportional to the difference of temperatures between the object and its surroundings i.e. dTdt=−kT, where t is the time taken and T is the difference of the temperatures between the object and its surroundings.

This gives us T as a function of t and is given by T(t)=ce−kt.

T(0)= Ce^-kt

C=35₩F- 185F= 165F

T(20) = 165×e^-20k=(350-70)

T(20)= e^-20k =280/165

-20k= ln(280/165)

-20k= ln(1.697)

-20k= 0.5289

K= 0.5289/20

K= 0.0264

If it cools at 185F in t minutes

165e^-0.0264×t=0.5

e^-0.0264t= 0.5/165

-0.0264t= on 3.03×10^-3

-0.0264t= -5.7129

t= 5.7129/0.0264

t=216.40minutes

7 0
2 years ago
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