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
Murrr4er [49]
2 years ago
9

A 120 V potential difference is applied to a space heater that dissipates 674 W during operation. (a) What is its resistance dur

ing operation? (b) At what rate do electrons flow through any cross section of the heater element?
Physics
2 answers:
Annette [7]2 years ago
6 0

Answer:

(a) 21.36 ohms

(b) 5.62 A

Explanation:

Parameters given:

Potential difference, V = 120 V

Power, P = 674 W

(a) Power is given as:

P = V²/R

Where R is resistance

=> R = V²/P

R = 120²/674

R = 14400/674

R = 21.36 ohms

(b) Power is also given as:

P = I*V

Where I = Current (time rate of flow of Electric charge)

=> I = P/V

I = 674/120

I = 5.62 A

OverLord2011 [107]2 years ago
3 0

Answer:

Explanation:

Given:

V = 120 V

Power = 674 W

A.

Resistance, R;

P = I × V

= V^2/R

R = 120^2/674

= 21.36 ohms

B.

dQ/dt = I

Using ohms law,

Current, I = V/R

= 120/21.36

= 5.62 C/s(A)

1 electron = 1.602 × 10^-19 C

Number of electrons in 1 second = 5.62/1.602 × 10^-19

= 3.51 × 10^19 per second

You might be interested in
When placed at a certain point, a
Wewaii [24]

Answer: 180

Explanation: Acellus

6 0
2 years ago
When the termination is a terminal block, care must be taken to ensure a good electrical connection without damaging the conduct
Tamiku [17]

Answer:

When the termination is a terminal block, care must be taken to ensure a good electrical connection without damaging the conductor. Terminals should not be used for more than one

Explanation:

The Terminal block being a modular block, having insulated frame, which can secure more than two wires in it. It has a conducting strip in it. These terminal clocks helps in making the connection safer as well as organised. These terminal blocks are used for power distribution in safer way. Its potential is it can distribute power from single to multiple output. The conductor is used for making it proper contact.

8 0
3 years ago
Que fuerza se obtendrá en el émbolo mayor de una prensa hidraúlica cuya área es de 167 cm2, cuando el émbolo menor de área igual
stiv31 [10]

Responder:

<h2>5.368N, </h2>

Explicación:

Según el principio pascal, establece que la presión aplicada en un punto sobre un líquido en un recipiente cerrado es igual a igual a la presión en cualquier otro punto del líquido.

Matemáticamente Presión ejercida por el pistón más pequeño = Presión ejercida por el pistón más grande.

La presión es la relación entre la fuerza y ​​su área de sección transversal.

P = Fuerza / Área de sección transversal

Sea P1 la presión sobre el pistón más pequeño y P2 la presión ejercida por el pistón más grande.

Como P1 = P2 entonces;

F1 / A1 = F2 / A2

Dado F1 = 450N, A1 = 14 cm², A2 = 167 cm² y F2 =?

Sustituyendo el valor conocido en la fórmula para obtener el requerido, tenemos;

\frac{450}{14} = \frac{F2}{167}\\  \\Cross\ multiplying\\\\14*F_2 = 450*167\\\\14F_2 = 75,150\\\\F_2 = \frac{75,150}{14} \\\\F_2 = 5,367.9N

F_2 \approx 5, 368N

Por lo tanto, la fuerza que se obtendrá en el pistón más grande de una prensa hidráulica cuya área es de 167 cm² es aproximadamente 5,368N,

4 0
3 years ago
What is the term for the overall change in position?
mart [117]
That's "displacement". It only depends on the beginning and ending locations, and doesn't care about the route between them.
6 0
3 years ago
Read 2 more answers
Vascular plants can be divided into three categories. These categories are
Evgesh-ka [11]
I believe the answer here is <span>C).seedless, seed (nonflowering), and seed (flowering).</span><span>
</span>
6 0
3 years ago
Other questions:
  • suppose you walk toward the rear of a moving train describe your motion as seen from a reference point on the train then describ
    5·1 answer
  • Trees are planned in roads to reduce noise. Justify the statement ​
    11·1 answer
  • a bottle lying on the windowsill falls off and takes 4.95 seconds to reach the ground. the distance from the windowsill to the g
    10·2 answers
  • A 0.1 m by 0.1 m sheet of cardboard is placed in a uniform electric field of 10 N/C. At first, the plane of the sheet is oriente
    8·1 answer
  • If you add together all of forces exerted on an object and get a non zero value this is called the _____ force on the object
    12·2 answers
  • How can astrophysicists tell whether a star is receding from or approaching earth?
    15·1 answer
  • Answer the questions below correctly (please) and I'll give brainliest!
    15·1 answer
  • Two spherical objects are separated by a distance that is 1.08 x 10-3 m. The objects are initially electrically neutral and are
    6·1 answer
  • The drawings show three charges that have the same magnitude but may have different signs. In all cases the distance d between t
    15·1 answer
  • The type of torque wrench designed for tightening clamping bands on underground pipe is the ___________________
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!