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
Daniel [21]
3 years ago
8

A 1,200-watt water heater is plugged into a 120-volt outlet and used for 1.5 hours. How much current runs through the water heat

er?
Physics
2 answers:
Ray Of Light [21]3 years ago
7 0

Answer:

Current (i) = 10 Ampere

Explanation:

As we know that power consumed by the electrical heater is given by the rate of electrical energy consumed by it.

So as we know that electrostatic potential energy of charge is given by

U = qV

now for electrical power we know that

P = \frac{dU}{dt}

P = \frac{d}{dt}(qV)

P = V\frac{dq}{dt}

P = Vi

so now by plug in data in this above equation we have

1200 = 120 \times i

i = 10 A

so current through the water heater will be i = 10 A

stiv31 [10]3 years ago
4 0
Current = power/voltage = 1200w/120v = 10 amperes. Constantly. Whenever the heater is turned on and heating.
You might be interested in
The water is reflecting light, Is this specular or diffuse reflection? explain your answer​
FinnZ [79.3K]
Yes the answer is true
8 0
3 years ago
What is the equation for determining the value of a specific gas constant using the universal gas constants
maria [59]

Answer:

Physically, the gas constant is the constant of proportionality that relates the energy scale in physics to the temperature scale, when a mole of particles at the stated temperature is being considered. Thus, the value of the gas constant ultimately derives from historical decisions and accidents in the setting of the energy and temperature scales, plus similar historical setting of the value of the molar scale used for the counting of particles.

Explanation:

Pa follow

3 0
2 years ago
The ammonia molecule (NH3) has a dipole moment of 5.0×10?30C?m. Ammonia molecules in the gas phase are placed in a uniform elect
Neko [114]

Question (continuation)

(a) What is the change in electric potential energy when the dipole moment of a molecule changes its orientation with respect to E S from parallel to perpendicular?

(b) At what absolute temperature T is the average translational kinetic energy 3/2kT of a molecule equal to the change in potential energy calculated in part (a)?

Answer:

a. 9.0 * 10^-24 Joules

b. 0.44K

Explanation:

Given

Let p = dipole moment = 5.0 * 10^-30 Cm

Let E = Magnitude = 1.8 * 10^6 N/m

a.

The charge in electric potential = Final Charge - Initial Charge

Initial Charge = Potential Energy

Initial Energy = -pE cosФ where Ф = 0

So, initial Energy = - 5.0 * 10^-30 * 1.8 * 10^6

Initial Energy = -9 * 10^-24 Joules

Final Energy = 0

Charge = 0 - (-9.0 * 10^-24)

Charge = 9.0 * 10^-24 Joules

b.

Absolute Temperature

Change in Kinetic Energy = Change in Potential Energy = 9.0 * 10^-24

Change in Kinetic Energy = 3/2kT where k is Steven-Boltzmann constant = 1.38 * 10^-23

So,

9.0 * 10^-24 = 3/2 * 1.38 * 10^-23 * T

T = (9.0 * 10^-24 * 2)/(3 * 1.38 * 10^-23)

T = (18 * 10^-24)/(4.14 * 10^-23)

T = 0.44K

6 0
3 years ago
A CAR ACCElerates FROM REST To
Ilia_Sergeevich [38]

Answer:

<u>666.6 kW</u>

Explanation:

<u>Power Formula</u>

  • Power = Force × Velocity

<u>Calculating Force</u>

  • F = ma
  • F = m(v - u / t) [From the equation v = u + at]
  • F = 2,000 (50/7.5)
  • F = 2,000 (20/3)
  • F = 40,000/3
  • F = 13333.3 N

<u>Solving for Power</u>

  • P = 13333.3 × 50
  • P = 666666.6 W
  • P = <u>666.6 kW</u>
5 0
2 years ago
Scientific models can be used for a variety of different purposes. Which of the following is not a possible use for a scientific
alex41 [277]
Options a to c can be the reasons for scientific models.

But to primarily answer scientific questions,that would require an empirical and experimental approach and not use of models.

Though after getting the answers, models can be built to further explain the answers.

<span>d. answer scientific questions.</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the molecular geometry or of the molecular molecule
    12·1 answer
  • If the value of static friction for a couch is 400N, what could be a possible value of its kinetic friction? *
    9·1 answer
  • Suppose a star is 500 light- years away from earth is moved to be 600 light - years away. Which statement is correct?
    7·2 answers
  • What would the force be if the separation between the two charges in the top window was adjusted to 8.19 ✕10-11 m? (The animatio
    6·1 answer
  • How many light years away is the sun from the middle of the Millky way​
    10·1 answer
  • Newton’s second law: Force equals mass times acceleration (__=___).
    10·1 answer
  • Porque deja de funcionar una estufa electrica cuando la electricidad es excesiva??
    6·2 answers
  • If matter cannot be created nor destroyed where did the matter in the univerce com from ???????
    13·1 answer
  • A boat is rowed perpendicular to the shore of a river that flows at 3.0 m/s as shown in the
    15·1 answer
  • What would cause a beam of light to increase in wavelength and bend away from the normal? A) Passing from a round glass into a s
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!