The electric field between two parallel plates is uniform, and its magnitude is given by
is the magnitude of the charge density on each face
is the vacuum permittivity
In this problem, we have
So, the electric field is
So now we can calculate the potential difference between the two plates, given by:
where is the distance between the two plates. Substituting, we find
Find the efficiency e of the oven. you will need to use the fact that 4.2 j of energy is required to raise the temperature of 1.0 ml of coffee by 1.0∘c .
The efficiency of the oven is .
The efficiency of the over is given as the ratio of the amount of energy provided to the coffee and the amount of energy consumed by the oven.
The amount of energy provided to the coffee by the oven is given as:
Here, is the amount energy gained by the coffee, is the volume of the coffee, is the specific heat capacity of the coffee and is the change in temperature.
Since the coffee uses of energy to raise the temperature of by . So, the specific heat capacity of the coffee is .
Substitute the values in above expression:
Now, the amount of energy supplied to the oven is:
Here, is the power and is the time for which the oven is operated.
Substitute the values of and in above expression.
The efficiency of the oven is given by:
Substitute the values in the above expression.
Thus, the efficiency of the oven is .
1.To what volume will a 2.33 l sample of gas expand if it is heated from brainly.com/question/9979757
2.In the calorimetry experiment which energy will be calculated during the heat exchange if water is used brainly.com/question/2566525
3.Suppose that the same amount of heat is added to two 10.0-g blockshttps://brainly.com/question/3063912
Chapter: Specific heats
Keywords: Efficiency of oven, coffee mug, 4.2 J, 1100 W, power, time, 45 s, input energy, ratio, energy consumed, heat coffee, temperature.
How many Newtons of force are required to stop a truck 2250 kg
How many minutes does light need to travel from the sun to Jupiter?
Light travels at a speed of 299,792 kilometers per second; 186,287 miles per second
Mercury it will take 193.0 seconds(3.2 minutes)
Venus it will take 360.0 seconds(6.0 minutes)
Earth it will take 499.0 seconds(8.3 minutes)
Mars It will take 759.9 seconds(12.6 minutes)
Jupiter It will take 2595.0 seconds(43.2 minutes)
Saturn it will take 4759.0 seconds(79.3 minutes)
Uranus it will take 9575.0 seconds(159.6 minutes)
Neptune it will take 14998.0 seconds(4.1 hours)
Pluto it will take 19680.0 seconds(5.5 hours)
A small bolt with a mass of 33.0 g sits on top of a piston. The piston is undergoing simple harmonic motion in the vertical direction with a frequency of 3.05 Hz. What is the maximum amplitude that the piston can oscillate without the bolt losing contact with the piston's surface?
the bolt loses contact with the piston only when acceleration due to gravity equals acceleration of piston
ω² * A = g where ω is angular velocity, A amplitude, g acceleration due to gravity
ω is given by 2πf, ω² is 4π²f²
A= g/4π²f² depending on the value of g used either 10m/s² or 9.8m/s²,
i used 10m/s² in this answer