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inna [77]
3 years ago
8

Your home energy bill is given in what kind of units?

Physics
1 answer:
MrRissso [65]3 years ago
6 0

Answer:

Home energy bill/electricity bill is measured in Kilowatt hours.

Water bill is measured in gallons & gas units is measured in BTUs.

hope it helps!

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What would the charge be on an ion with 8 protons 7 neutrons and 6 elements?
andre [41]

Answer:

-2

Explanation:

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Please round 1045.2 to three significant digits
Anton [14]

1045

if this is actually if this is right tell me

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A student pushes against a wall with a force of 30N. The wall does not move. What amount of force does the wall exert on the stu
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• ¿Qué rapidez tendrá un sonido de 150 Hz con una longitud de onda de 2 metros?
kobusy [5.1K]

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Speed = 300 m/s

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7 0
3 years ago
In a crash test, a truck with mass 2100 kg traveling at 22 m/s smashes head-on into a concrete wall without rebounding. The fron
slega [8]

Answer:

a)   v_average = 11 m / s, b)  t = 0.0627 s

, c)    F = 7.37 10⁵ N

, d)   F / W = 35.8

Explanation:

a) truck speed can be found with kinematics

         v² = v₀² - 2 a x

The fine speed zeroes them

           a = v₀² / 2x

           a = 22²/2 0.69

           a = 350.72 m / s²

The average speed is

           v_average = (v + v₀) / 2

           v_average = (22 + 0) / 2

           v_average = 11 m / s

b) The average time

          v = v₀ - a t

          t = v₀ / a

          t = 22 / 350.72

          t = 0.0627 s

c) The force can be found with Newton's second law

             F = m a

             F = 2100 350.72

             F = 7.37 10⁵ N

.d) the ratio of this force to weight

             F / W = 7.37 10⁵ / (2100 9.8)

             F / W = 35.8

.e) Several approaches will be made:

- the resistance of air and tires is neglected

- It is despised that the force is not constant in time

- Depreciation of materials deformation during the crash

5 0
3 years ago
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