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makvit [3.9K]
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
Physics
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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kenny6666 [7]

the benefit of direct contact, through a survey or interview

6 0
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)

t = 9.14 s

Explanation:

Part a)

Angular speed is given as

\omega = 2\pi f

\omega = 2\pi(\frac{78}{60})

\omega = 8.17 rad/s

Part b)

Since turn table is accelerating uniformly

so we will have

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

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

2N\pi = 48.6

N = 7.74 rev

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

then we will have

\omega_2 = 2\pi (\frac{120}{60})

\omega_2 = 12.56 rad/s

number of turns revolved is 15 times

so we have

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

12.56^2 - 8.17^2 = 2\alpha (2\pi\times 15)

\alpha = 0.48 rad/s^2

Part e)

now for uniform acceleration we have

\omega_f - \omega_i = \alpha t

12.56 - 8.17 = 0.48 t

t = 9.14 s

7 0
2 years ago
Dog starts at position X equals 2.50 m and undergoes displacement of 8.25 m what is its final position
BabaBlast [244]

Answer:

displacement is how far the dog is from the original position so use addition

Explanation:

2.50+8.25= 10.75

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2 years ago
Falls often cause injuries, so one of the significant aspects of falls is the displacement and motion of a body. It is defined a
Dima020 [189]

Answer:

We need, mass, gravity and height.

Explanation:

When a body falls freely from a height, its initial velocity is zero, but due to the height it has some potential energy at the top and the kinetic energy is zero.

As it falls, the potential energy is gradually converted in to the kinetic energy so that the total energy of the falling body is conserved.

At the time as the body strikes the ground, the entire potential energy is converted into the kinetic energy.

Potential energy is given by

U = m g h

where, m is the mass, g is the gravity and h is the height,

So, to get the kinetic energy we require mass, gravity and height of the body.

7 0
2 years ago
What is the energy released from nuclear fuels inside a nuclear reactor used for
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