If one loudspeaker produces a sound pressure level of 78 dB at a distance of 3 m, and another produces a level of 82 dB at the same distance, what would be the total sound pressure level from both? Please use the equation for this problem, not the shortcut.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
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If one loudspeaker produces a sound pressure level of 78 dB at a distance of 3 m, and another produces a level of 82 dB at the same distance, what would be the total sound pressure level from both? Please use the equation for this problem, not the shortcut.
31.5 Hz
63 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
4 kHz
8 kHz
78 dB
67 dB
65 dB
56 dB
48 dB
40 dB
37 dB
36 dB
25 dB
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