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Sindrei [870]
2 years ago
6

2. Which of the following is NOT true of work?

Physics
2 answers:
salantis [7]2 years ago
3 0

Answer:

D

Explanation:

Work is not a vector but it is a scalar

kirill115 [55]2 years ago
3 0

Answer:

D

Explanation:

D. its is a vector which is always in the same direction as the displacement

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The 8.00-cm long second hand on a watch rotates smoothly.
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What is the meaning of joule​
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3 years ago
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In a race, you run 3000 meters east in 21 minutes. What is your velocity in km/min?
STALIN [3.7K]

velocity = distance / time      v= d/t          firstly you change 3000 m into km     distance  D = 3000/1000  = 3 km             secondly   time t = 21 min      using velocity formula v = d/t       = 3 km/21min       =0.142km/min

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2 years ago
You just tested the hypothesis a proposed model for the position of bright fringes produced by two slits. Explain what the model
Viefleur [7K]

Answer:

two-slit interference model was proposed by Young     d sin θ = m λ

Explanation:

The two-slit interference model was proposed by Young, it establishes that if a coherent source of light passes through two slits, the shape of the given pattern is a consequence of the relative phase difference between the two rays; mathematically it can be expressed by

           d sin θ = m λ

          m= 0, 1, 2, 3, ...

for constructive interference, that is, the two rays arrive with a number between wavelengths.

D is the distance between the slits, tea the angle between the two rays, m an integer and m the wavelength used.

In a simulation a pattern of slits of equal intensity and equally spaced is observed.

3 0
2 years ago
8. Calculate the total resistance in a series circuit with a fan (3 ohms) and 3 lights (1 ohms each). 9 ohms O 12 ohms 15 ohms 0
Paraphin [41]

Answer:

 R_eq = 6 Ω

Explanation:

In a series circuit the current is constant throughout the circuit and the resistance is the sum of all the resistances in it.

         R_eq = ∑

in this case we have

         R_eq = R₁1 + 3 R₂

where R₁ is the resistance of the fan and R₂ the resistance of each light, we must clarify that we will assume that the resistance of the lights does not change with temperature

let's calculate

          R_eq = 3 + 3 1

           R_eq = 6 Ω

5 0
2 years ago
Read 2 more answers
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