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posledela
2 years ago
15

How much time is needed for a car to accelerate from 2.0 m/s to a speed of 6.0 m/s if its acceleration is 10 m/s^2

Physics
1 answer:
krok68 [10]2 years ago
3 0

Answer:

I need help on dbq

Explanation:

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If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is
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Would earth orbiting the sun be known as
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C. Newton’s Third Law of Motion.

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Newtons third law implies conversation of momentum it can also be seen as following from the second law: when one object pushes a second object at some point of contact using an applied force, there must be an equation of opposite force from the second object that cancels the applied force. Otherwise, there would be a nonzero net force on a massless point which, by the second law, would accelerate the point of contact by an infinite amount.
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Light is incident normally on the short face of a 30∘−60∘−90∘ prism (Figure 1). A drop of liquid is placed on the hypotenuse of
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1.06 is the <u>maximum</u> refractive index that the liquid may have for the light to be totally reflected.

Only when a light source passes from a denser to a rarer medium can it completely reflect.

When the angle of incidence surpasses a specific critical value, specular reflection occurs in the more highly refractive of the two mediums at their interface, and this reflection is known as total reflection.

sin i_{c} = μ_{r} / μ_{d

From the diagram

Angle of incidence = 60°

sin60°  ≥ sini_{c} = μ_{r}/μ_{d}

μ_{r} ≤ μ_{d} sin60°

μ_{r} ≤ √1.5 × √3/2

   = 1.06

Hence, the maximum index that the liquid may have for the light to be totally reflected is 1.06

Learn more about refractive index here brainly.com/question/10729741

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2 years ago
What is a deadly diseases with no cure
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3 0
2 years ago
Determine the Specific Heat Capacity (Cs) of the liquid. Where: Mass of liquid (M₂) = 0.0012Kg, Initial temperature (₁)=23°C, Fi
alexandr1967 [171]

The Specific Heat Capacity of the liquid is 43.846 KJ/(Kg K).

  • It is given that Mass of liquid (M) = 0.0012Kg, Initial temperature (T1) = 23°C, Final temperature (T2) = 62°C, Voltage (V) = 8v, Current (I) = 0.95A, Time (t) = 270s
  • The quantity of heat that must be applied to an object in order to cause a unit change in temperature is known as the heat capacity or thermal capacity of that object.
  • We know that heat capacity for a substance is :
  • H = m*C*ΔT    - equation (1)

  • When a conductor is subjected to current flow, the conductor's free electrons are set in motion and collide with one another. Moving electrons experience kinetic energy loss and partial thermal energy conversion as a result of the collision. This impact of current is referred to as its heating effect.
  • Due to electric current, heat energy is :
  • H = Power * Time
  • H = Current * Voltage * Time
  • H = I*V*t          - equation (2)

  • Using equation (1) and (2),
  • m*C*ΔT = I*V*t
  • Substituting the values for m, ΔT, I, V and t.
  • 0.0012Kg * C * (62 - 23)K = 0.95A * 8v * 270s
  • Solving for C, we get C = 43.846 KJ/(Kg K)

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2 years ago
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