1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nikitich [7]
3 years ago
8

A typical american family uses 1000 kwh of electricity a month. what is the average rrns current in the 120 v power line to a ty

pical house?
Physics
1 answer:
grandymaker [24]3 years ago
8 0

Power = (1000 kilo-Watt-hr/mo) x (1000/kilo) x (mo/30day) x (day/24 hr)

Power = (1000 x 1000 / 30 x 24) (kilo-watt-hr-mo-day/mo-kilo-day-hr)

Power = (1,000,000/720) watt

(voltage x current) = (1,000,000/720) watts

120v x current = (1,000,000/720) watts

Current =  1,000,000 / (720 x 120) Amperes

<em>Current = 11.57 Amperes</em>

You might be interested in
A 40-kg uniform semicircular sign 1.6 m in diameter is supported by two wires as shown. What
garri49 [273]

Answer:

T1 = 131.4 [N]

T2 = 261 [N]

Explanation:

To solve this problem we must make a sketch of how will be the semicircle, for this reason we conducted an internet search, to find the scheme of the problem. This scheme is attached in the first image.

Then we make a free body diagram, with this free body diagram, we raise the forces that act on the body. Since it is a problem involving static equilibrium, the sum of forces in any direction and moments must be equal to zero.

By performing a sum of forces on the Y axis equal to zero we can find an equation that relates the forces of tension T1 & T2.

The second equation can be determined by summing moments equal to zero, around the point of application of the T1 force. In this way we find the T2 force.

The value of T2, is replaced in the first equation and we can find the value for T1.

Therefore

T1 = 131.4 [N]

T2 = 261 [N]

The free body diagram and the developed equations can be seen in the second attached image.

4 0
3 years ago
True or false?
Ksju [112]

1. False

Explanation: it's exactly the opposite. In fact, Lenz's law states that the induced current and the induced emf in a conductor are generated in such a direction that opposes to the change in magnetic flux through the coil. This is summarized by the negative sign in the Faraday's Newmann Lenz law:

\epsilon= -\frac{d\Phi }{dt}

where \epsilon is the emf induced and \frac{d\Phi}{dt} is the rate of change of magnetic flux through the coil.

Lenz's law is a consequence of the law of conservation of energy. In fact, we have:

- If the magnetic flux through a coil is increasing, then the induced current has a direction such that the magnetic field generated by the coil is opposite to the direction of the external magnetic field, in order to decrease the total flux

- If the magnetic flux through a coil is decreasing, then the induced current has a direction such that the magnetic field generated by the coil is in the same direction as the external field, in order to increase the total flux

2. False

Explanation: the magnetic flux through a surface is given by

\Phi = BA cos \theta

where

B is the magnitude of the magnetic field

A is the surface area

\theta is the angle between the direction of B and the normal vector to the surface

As we see, the magnetic flux depends not only on B and A, but also on the orientation of the coil with respect to the magnetic field.

3. False

Explanation:

- Sound waves are mechanical waves: mechanical waves are waves consisting of oscillations of the particles in a medium. Due to their nature, therefore, mechanical waves can propagate only in the presence of a medium

- Electromagnetic waves are NOT mechanical waves: they consist of oscillations of electric and magnetic fields, in a direction perpendicular to the direction of propagation of the wave. Since em waves are not mechanical waves, they do NOT need a medium to propagate, since they can also travel through a vacuum; therefore the original statement is false.

5 0
3 years ago
Please answer these questions for me! I am giving MAX points! Brainliest!
guajiro [1.7K]

I think you have them all marked correctly

7. They carry hereditary material from parent

8. 50 percent

1. Nutrition

2. X-linked dominant


If Im wrong Im sorry. its been like 4 years since i took biology but i remember some things

3 0
3 years ago
Read 2 more answers
A standard AA battery provides 1.5 V. How many pennies and nickels would you need to include in a voltaic pile to produce the sa
GrogVix [38]

Answer: In a battery, voltage determines how strongly electrons are pushed through a circuit, much like pressure determines how strongly water is pushed through a hose. Most AAA, AA, C, and D batteries are around 1.5 volts. Imagine the batteries shown in the diagram are rated at 1.5 volts and 500 milliamp-hours.

Explanation: Today "AA" is frequently used as a size designation, irrespective of the battery's electrochemical system. The main numbers used for the most common NiMH and NiCad battery

8 0
2 years ago
As distance increases, force decrease and vise versa, as distance decreases then, force increases. This is a ________________ re
Sonbull [250]
It is indirectly proportional or inverse so it would be C
8 0
3 years ago
Other questions:
  • Which of Newton's laws accounts for the following statement?
    12·2 answers
  • I need help with these two not sure on them
    9·1 answer
  • Calculate how much an astronaut with mass of 90 kg would weigh while standing on the surface of Mars. The acceleration due to gr
    9·1 answer
  • according to Newton's third law what is the equal and opposite force to the downward force of gravity pulling on a man standing
    8·2 answers
  • Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8 m/s2, which gives the illusion of normal gravi
    8·1 answer
  • Help??????????????????????????
    10·1 answer
  • Dan is 50 years old, is beginning to look back at the successes and failures in his life, and hopes to use this reflection to de
    12·2 answers
  • PLEASE HELP
    9·2 answers
  • How do solar panels create electricity
    7·1 answer
  • Which type of light wave has the highest energy? which has the least amount of energy
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!