Answer:
D. Graphing the force as a function of distance and calculating the area under the curve.
Explanation:
<span>The record of an earthquake obtained from a seismic instrument is a </span>
SEISMOGRAM
Answer:
The distance of first minimum from central maxima is 4.25 m
The spacing between maxima in sound intensity is 8.5 m.
Explanation:
Given that,
Distance D= 15 m
Frequency = 200 Hz
distance between slits a=3 m
We know that,
The width of fringe,


(a). We need to calculate the distance of first minimum from central maxima
Using formula for distance


Put the value into the formula


(b). We need to calculate the spacing between maxima in sound intensity
Using formula for the distance of first maxima



Hence, The distance of first minimum from central maxima is 4.25 m
The spacing between maxima in sound intensity is 8.5 m.
The pulleys will reduce the mechanical force (effort) required to lift the block and will change the mechanical advantage.
The pulley system is a type of simple machine which makes our work easier and faster by overcoming a large load when a small force (effort) is applied to it.
The efficiency of a machine is calculated as follows;

where;
- <em>M.A is the mechanical advantage </em>
- <em>V.R is the velocity ratio</em>

The velocity ratio of a pulley system = number of pulleys
The velocity ratio of a pulley system increases with increase in the number of pulleys.
Thus, we can conclude that the pulleys will reduce the mechanical force (effort) required to lift the block and will change the mechanical advantage.
Learn more about velocity ratio of pulleys here: brainly.com/question/24785465
Answer:
0.17214 m
Explanation:
P = Pressure difference between inside and outside the chest cavity = 0.05 atm
= Density of fresh water = 1000 kg/m³
= Density of water in the Dead Sea= 1500 kg/m³
h = Height
In fresh water

In dead sea

The difference in height is 0.51643-0.34429 = 0.17214 m