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2 years ago

6

find the power needed in a circuit that has a toaster that uses 115 volts and 5 amperes and a hot plate that used 115 volts and

10 amperes

1 answer:

mixas84 [53]2 years ago

6 0

Answer:

1725 Watts

Explanation:

Total power needed = Power of hotplate + Power of toaster

Total power needed = 115×10 + 115×5

Total power needed = 1725 Watts

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the benefit of direct contact, through a survey or interview

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3 years ago

Case 1: A DJ starts up her phonograph player. The turntable accelerates uniformly from rest, and takes t₁ = 11.9 seconds to get

olga_2 [115]

Answer:

Part a)

$\omega = 8.17 rad/s$

Part b)

$N = 7.74 rev$

Part c)

$\alpha = 0.69 rad/s^2$

Part d)

$\alpha = 0.48 rad/s^2$

Part e)

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Explanation:

Part a)

Angular speed is given as

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Part b)

Since turn table is accelerating uniformly

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$\theta = \frac{\omega_f + \omega_i}{2} t$

$\theta = \frac{8.17 + 0}{2}(11.9)$

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Part c)

angular acceleration is given as

$\alpha = \frac{\omega_f - \omega_i}{t}$

$\alpha = \frac{8.17 - 0}{11.9}$

$\alpha = 0.69 rad/s^2$

Part d)

When its angular speed changes to 120 rpm

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$\omega_f^2 - \omega_i^2 = 2 \alpha \theta$

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Part e)

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