Answer:
1.03
Explanation:
0.02 has two significant decimal figures, so start by shortening 1.0090 to 2 decimal places (3 significant figures). Round up the decimal to become 1.1 and add .02 to get 1.3.
Answer:
The goal of physics is to understand how things work from first principles. ... Courses in physics reveal the mathematical beauty of the universe at scales ranging from subatomic to cosmological. Studying physics strengthens quantitative reasoning and problem solving skills that are valuable in areas beyond physics.
By using the formula
Force =mass×acceleration
Force=45×0.85
=38.25N
Each 480-volt, three-phase, wye-connected feeder disconnect with a minimum rating of 100 amperes is required to be ground-fault protected.
A feeder disconnect is the main electrical disconnecting device in an electrical circuit. It provides an accessible location for disconnecting all conductors at one time and is usually located near the source of power. Feeders can consist of cables or busbars.
To be considered a feeder, it must have a voltage that exceeds 50 volts under normal conditions and must supply more than one receptacle or piece of equipment. A feeder disconnect must have a minimum rating of 100 amperes or less and may be rated up to 1000 amperes or higher depending on how much power it supplies to its load(s).
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Answer:
1.The temperature of each sample will increase by the same amount
Explanation:
This is because, since their specific heat capacities are the same and we have the same mass of each substance, and the same amount of energy due to heat flow is supplied to both the glass and brick at room temperature, their temperatures would thereby increase by the same amount.
This is shown by the calculation below
Q = mcΔT
ΔT = Q/mc where ΔT = temperature change, Q = amount of heat, m = mass of substance and c = specific heat capacity of substance.
Since Q, m and c are the same for both substances, thus ΔT will be the same.
So, the temperature of each sample will increase by the same amount