PE = mgh
137200 = mg x 200
686 = mg
686/9.81 = m
m = 69.9286
Answer: The correct answer is 100 W.
The expression for the power in terms of voltage and the current is as follows;
P=VI .......... (1)
Here, P is the power, V is the voltage and I is the current.
It is given in the problem that a 100 W light bulb and a 75 W light bulb operate from 220 V .
Calculate the current for light bulb, 100 W by rearranging the above expression.
Put P= 100 W and V= 220 V.
I= 0.45 A
Calculate the current for light bulb, 75 W by expression (1).
Put P= 75 W and V= 220 V.
I= 0.34 A
Therefore, 100 W light bulb has a greater current in it
A and D
The correct choice is
The diffraction of the sound waves takes place when the wavelength of sound wave is comparable with the size of the object. Waves of wavelengths 1 meter, 5 meter, and 12.5 meters are comparable to the size of the doorway while the wavelength 15 centimeters is very small compared to the size of the doorway. hence the waves of wavelength 15 cm diffracts the least.
A. Test tube.
The test tubes are used to collect samples of a particular liquid.
A graduated cylinder is like a test tube but it has marks on the tube to measure the volume of a liquid.
A ruler is used to measure length.
And finally, a thermometer is used to measure the temperature.
I hope this answer helps you.
The rest of the bulbs stop shining and shut off.
The correct answer is BEACH. I just finished the assignment and that's the correct answer.
The answer is A. Neuralization occurs when a base is mixed with an acid and the general equation is;
acid + base(alkali) → salt + water
Another application of neutralization, other than its application in antiacids, is its use in fertilizer to bring bask coils pH to the required standard for optimum growth of plants.
the answer is : the amount of heat released or absorbed by a substance.
7.9 is the correct answer.