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ivann1987 [24]
3 years ago
6

Which is correct help asap

Physics
1 answer:
Wittaler [7]3 years ago
5 0

Answer:

b

Explanation:

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Find the impedance of the load for maximum power transfer in the attached circuit.
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In the physics lab, a cart with a mass of 1 kg is found to have an acceleration of 50 cm/s^2 when it is pulled by a string with
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Answer:

a = 25 cm/s²

Explanation:

Given,

The mass of the cart, m = 1 Kg

The acceleration of the cart, a = 50 cm/s²

The string with clay hanging off the ramp exerts a force, F on the cart (neglecting the tension in the string)

                                   F = m x a

                                      = 1 Kg X 50 cm/s²

                                      = 50 Kg cm/s²

Hence the force exerted by the clay hanging off the ramp on the cart, F = 50 Kg cm/s²

If the mass of the cart is doubled '2 Kg', the same magnitude of the force acts on the cart.

Therefore, from the equation,

                                   F = m x a

                             50 Kg cm/s² = 2 Kg x a

                                       a =  50 Kg cm/s² / 2 Kg

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Hence, the acceleration of the cart is, a = 25 cm/s²

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3 years ago
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Explanation:

Given

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\Delta S=\frac{Q}{T_0}

Q=m\times L

Q=1\times 2256\times 10^3

\Delta s=\frac{2256\times 10^3}{100+273}

\Delta s=6.04kJ/K    

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4 years ago
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