Answer:
E= 71dB
Explanation:
See attached file for step by step calculation
Answer:
No car will slide
Explanation:
Neither car will slide because proper bank does not required frictional forces. To prevent the car from traction through curve, a component of normal forces provides necessary centripetal forces. which prevent them to slide.
No car will slide since both car are going with the proper speed for given banking angle
In scientific notation there are some rules;
1) the decimal point is comes to the first non-zero degit.
2) if the decimal point comes from left to right the power of ten must be negative.
3) if the decimal point comes from right to left then the power of 10 is possitive.
the numberyou wrote is an scientific form.you must say that expressed in standard form.write brother.
Answer:
4 m/s
Explanation:
It doesn't state it clearly in the problem, but I assume that the shores of the river are parallel and the man reaches the other side perpendicular from where he started (see attached image).
There are an infinite number of ways the swimmer can go from point A to point B, but the shortest time is of course a straight line. We know that the net speed along this line is 3 m/s. We also know the swimmer's speed is 5 m/s. Since the net velocity vector is perpendicular to the river's velocity, we can use Pythagorean theorem.
vᵣ² + (3 m/s)² = (5 m/s)²
vᵣ = 4 m/s
The water in the river flows at a speed of 4 m/s.
Explanation:
"When a solution reaches the point where it cannot dissolve any more solute it is considered "saturated." If a saturated solution loses some solvent, then solid crystals of the solute will start to form. This is what happens when water evaporates and salt crystals begin to form."