Answer:
The energy consumption by toaster oven is 432 kJ and that of fluorescent light (CFL) bulb is 435 kJ.
Explanation:
Power of toaster oven, P = 1.2 kW
Time, t = 6 minutes = 360 s
The energy used by toaster oven is given by :
Power of fluorescent light (CFL) bulb, P' = 11 W
Time, t' = 11 h = 39600 s
Energy used by fluorescent light (CFL) bulb is given by :
So, the energy consumption by toaster oven is 432 kJ and that of fluorescent light (CFL) bulb is 435 kJ.
An important assumption to solve this problem is that the acceleration is uniform (constant).
Under that assumption you can use following formulae.
Acceleration = [Final velocity - Initial velocity] / time
You have final velocity = 0 and initial velocity = 16 km/h
Then you need to find the time.
Average velocity = [distance / time]
In this case the distance is the deformation of the bumper: 6.2 cm = 0.062 m = 0.000062 km
And when acceleration is constant, the average speed is equal to [Initial velocity + Final velocity] / 2 = [16 km/h + 0] /2 = 8 km/h
Now you can calculate time solving from Average velocity = [distance / time]
time = distance / average velocity = 0.000062 km / 8 km/h = 0.00000775 h
And, finally we can use the formula Acceleration = [Final velocity - Initial velocity] / time
Acceleration = [16 km/h - 0 km/h] / 0.00000775 h = 2,064,516 km/h^2
The Coulomb's law equation is F = Kq₁q₂/r².
<h3>
What is Coulomb's law?</h3>
This is the law that relates the product of two charges to the square of distance between the two charges.
Coulomb's law states that the force of attraction or repulsion is directly proportional to the product of the charges and inversely proportional to the square of distance between the charges.
<h3>Coulombs' law equation</h3>
The equation of Coulomb's law is given as;
F = Kq₁q₂/r²
where;
- K is Coulomb's constant, Nm²/C²
- q₁ is the first charge, C
- q₂ is the second charge, C)
- r is the distance between the charges, m
Thus, the Coulomb's law equation is F = Kq₁q₂/r².
Learn more about Coulomb's law equation here: brainly.com/question/24743340
Answer:
Explanation:
Given that:
angular frequency = 11.3 rad/s
Spring constant (k) =
k = (11.3)² m
k = 127.7 m
where;
= 0.065 m
= 0.048 m
According to the conservation of energies;
∴
So it takes, 2.44 Joules of energy, to change 1 gram of ethanol by 1 degree Celsius.