1) 0.1 kWh
Explanation:
The power of the lightbulb is:
The energy used by the lightbulb is equal to the product between the power (P) and the time (t):
Since the bulb has been left on for t = 1 h, the total electrical energy used is
2) $ 0.018
Explanation:
The company charges $0.18 per each kilowatt-hour. So, we can find the total cost charged for using 0.1 kWh of electricity by setting the following proportion:
$0.18 : 1 kWh = x : 0.1 kWh
And solving for x, we find
The percent complete is calculated by dividing the quantity of material progressed at a point in time by the total quantity required for the project. The resulting percent is multiplied by the current agreed committed value of the material item to obtain the VOWD for that item.
F=ma
8480=26.5m
m=8480/26.5
m=320
The mass of the cart is 320kg.
The density of a substance is the quotient we obtain when we divide its mass by the volume. The density is,
density = mass / volume
The mass of carbon tetrachloride is given to be 123.95 grams and that the volume is obtained by subtracting final weight of the completely full-filled with water bottle with the initial weight.
86.55 - 24.25 = 62.3 grams
Since the density of water is 1 grams/ cc. Then, the volume of the bottle is also 62.3 cc. The density is therefore,
density = 123.95 grams/ 62.3 cc = 1.99 g/cc
