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
Alchen [17]
2 years ago
8

1. An electric lamp a marked 240V, 6A. What

Physics
1 answer:
Annette [7]2 years ago
8 0

Answer:

The resistance of the lamp is 4Ω.

Explanation:

You have to apply voltage formula :

V = I × R

R = V ÷ I

R = 240 ÷ 60

R = 4 Ω

You might be interested in
Explain how a refrigerator works to cool down warm objects that would otherwise be room temperature
expeople1 [14]

Answer: evaporation

Explanation:

Refrigerators work by causing the refrigerant circulating inside them to change from a liquid into a gas. This process, called evaporation, cools the surrounding area and produces the desired effect.

8 0
3 years ago
The energy band gap of GaAs is 1.4 eV. Calculate the optimum wavelength of light for
notsponge [240]

Answer:

The optimum wavelength = (8.863 × 10⁻⁷) m = 886.3 nm

Explanation:

The light that will generate the photovoltaic energy of 1.4 eV will must have that amount of energy

Energy of light waves is given as

E = hf

h = Planck's constant = (6.626 × 10⁻³⁴) J.s

f = Frequency of the light

The frequency is then further given as

f = (c/λ)

c = speed of light = (3.0 × 10⁸) m/s

λ = wavelength of the light = ?

E = (hc/λ)

λ = (hc/E)

Energy = E = 1.4 eV = 1.4 × 1.602 × 10⁻¹⁹ = (2.2428 × 10⁻¹⁹) J

λ = (6.626 × 10⁻³⁴ × 3.0 × 10⁸)/(2.2428 × 10⁻¹⁹)

λ = (8.863 × 10⁻⁷) m = 886 nm

Hope this Helps!!!

3 0
3 years ago
The terminal velocity of a person falling in air depends upon the weight and the area of the person facing the fluid.
kolbaska11 [484]

Answer:

The terminal velocity of the diver is 115 m/s = 414 km/hr

Explanation:

At terminal velocity,

Fnet = mg - Fd = 0

Drag force, Fd = cρAv²/2

mg = cρAv²/2

Terminal Velocity of a body falling through a fluid as in a diver falling through air is given by

v = √(2mg/ρcA)

where m = mass of body falling through fluid = 80 kg

g = acceleration due to gravity = 9.8 m/s²

ρ = density fluid, density of air, as obtained from literature = 1.21 kg/m³

c = coefficient of drag friction of diver falling through air, as obtained from literature = 0.7

A = the area of the diver facing the fluid = 0.14 m²

v = √(2mg/ρcA) = √((2 × 80 × 9.8)/(1.21 × 0.7 × 0.14)) = 115 m/s = 115 × (3600/1000) km/hr = 414 km/hr

5 0
3 years ago
An alkane has molecular weight 86. Write its molecular formula. What will be its physical state?
Brums [2.3K]

C6H14

Gaseous state

it's unsaturated hence gaseous

8 0
3 years ago
a surface recieving sound is moved from it original position to a position three times farther away from the source of the sound
Delicious77 [7]
Sound intensity = 1/(r^2)

That is Sound intensity is indirectly proportional to  the distance. Therefore, sound becomes 9 times less intense.
7 0
3 years ago
Other questions:
  • Displacement vectors of 3 m and 5 m in the same direction combine to ma
    6·1 answer
  • Convert 540 cg= ____ Hg
    13·1 answer
  • Two cars A and B, travel in a straight line. The distance of A from the starting point is given as a function of time by x????(?
    14·2 answers
  • New evidence does not change what scientists already believe to be true. Group of answer choices True False
    11·1 answer
  • Which statement best defines inertia?
    14·2 answers
  • One of the purposes of an experiment is to determine whether the dependent variable affects the independent variable. Please sel
    11·2 answers
  • A string of length 4m is extended by 0.02m, when a load of 0.4kg is suspended at its end. What will be the length of the string,
    6·1 answer
  • 8N<br>4550<br>o<br>Go<br>and the resultant of the system<br>Eul<br>22​
    9·1 answer
  • HELPPP<br><br><br> chchcuhckf hfjf
    7·1 answer
  • The plasma membrane of a neuron has voltage-gated sodium and potassium channels. What is the effect of membrane depolarization o
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!