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
Free_Kalibri [48]
1 year ago
15

As you can see, my cousin has a lot of hair. He uses an 1800 W blow dryer and it takes him

Physics
1 answer:
maw [93]1 year ago
5 0

Power = 1800W (or 1.8KW by dividing by 1000)

Time = 3 hours

Power = energy/ time

1.8KW = energy/ 3

x3

5.4Kw/h= energy

(5.4KJ or 5400J used)

$0.15 Kw/h

$0.15 X 5.4 = 0.81

Thus, cost $0.81

Hope this helps!

You might be interested in
What do low energy waves have
Elena-2011 [213]
The Answer: Photons

There is photons in low energy waves
7 0
3 years ago
-4.3 light years what is the value of the 3??​
Radda [10]

Answer:

A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers

3 0
2 years ago
A capacitor is to be constructed to have a capacitance of 100uF.The area of the plates is 6.om by 0.030m and the relative permit
lara [203]

Answer:

The answer is below

Explanation:

Given that:

The area of the plates is 6 m by 0.030 m, Therefore the area = 6 m × 0.03 m =  0.18 m²

the relative permittivity of dielectric (εr) is 7.0

Permittivity of free space (εo) = 8.854 × 10^(-12)

capacitance of 100uF

potential difference (V) of 12V

d = separation between plate

The capacitance (C) of a capacitor is given by:

C=\frac{\epsilon_o \epsilon_r A }{d}\\ 100*10^{-6}=\frac{8.854*10^{-12}*7*0.18}{d}\\ d=\frac{8.854*10^{-12}*7*0.18}{100*10^{-6}}=1.11*10^{-7}\ m

The electric field between plates is given as:

E = V /d

E = 12 / 1.11*10^{-7}=10.75*10^7\ V/m

3 0
3 years ago
Something that might happen because of global warming is: __________. *
gogolik [260]

Answer:

melting polar icecaps seems the best, hopes this helps!

6 0
3 years ago
what happens to the gravitational force when the distance between them stays the same and the mass of both objects is doubled
Dimas [21]

Answer:

The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases.

Explanation:

7 0
3 years ago
Other questions:
  • How fast does a cats hair grow back?
    14·2 answers
  • A 55 newton force applied on an object moves the object 10 meters in the same direction as the force. What is the value of work
    8·2 answers
  • A hot air ballo0n is ascending straight up at a constant
    15·1 answer
  • A large stick is pivoted about one end and allowed to swing back and forth with no friction as a physical pendulum. The mass of
    6·1 answer
  • We can use the textbook results for head-on elastic collisions to analyze the recoil of the Earth when a ball bounces off a wall
    11·2 answers
  • Which describes a virus?
    10·1 answer
  • A 7.0 kg bowling ball traveling at 2.0 m/s collides with a stationary 0.5 kg beach ball in
    8·1 answer
  • What are the types of energy sources based on<br>time of replacement ? write down their names <br>​
    13·2 answers
  • Please please help i need to finish this test
    8·1 answer
  • A ball is thrown straight up into the air. Which of the following best describes the energy present at various stages?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!