Cecily is inflating her bicycle tyre with the pump below. When she pushes the plunger down, it is doing work against the gas. Th
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Answer:
Also as we can see the equation that heat flux directly depends on the temperature gradient so more is the temperature gradient then more will be the heat flux.
For positive temperature gradient the heat will flow outwards while for negative temperature gradient the heat will flow inwards
Explanation:
As we know that heat flux is given by the formula
here we know that
K = thermal conductivity
= temperature gradient
now we know that
also we know that
K = 1.7 W/mK
now we have
so temperature gradient is given as
also in other unit it will be same
Also as we can see the equation that heat flux directly depends on the temperature gradient so more is the temperature gradient then more will be the heat flux.
For positive temperature gradient the heat will flow outwards while for negative temperature gradient the heat will flow inwards
Answer:
<em>v=u + at</em>
<em>0= 22 + a*2</em>
<em>a = -22/2 = -11 m/s^2</em>
<em>The car's acceleration is -11 m/s^2</em>
<em>V^2 = u^2 + 2as</em>
<em>022^2 + 2*(-11)</em><em>s</em>
<em>s = 22^2/22 = 22m</em>
<em> </em><em>The car will travel 22 m before stopping.</em>
Explanation:
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Answer:
(a)
907.11 rad/s²
(b)
4082 rad
Explanation:
(a)
t = time taken = 3.00 s
w₀ = initial angular velocity of the drill = 0 rad/s
w = final angular velocity of the drill = 26000 rev/min = 26000 = 2721.33 rad/s
α = angular acceleration of the drill
t = time interval = 3.00 s
using the equation
w = w₀ + α t
2721.33 = 0 + α (3)
α = 907.11 rad/s²
(b)
θ = angle
using the equation
θ = w₀ t + (0.5) α t²
θ = (0) (3.00) + (0.5) (907.11) (3.00)²
θ = 4082 rad