y what beat frequency is developed when both tuning forks are struck simultaneously?A) 0.1 hertzB) 1.0 hertzC) 2.0 hertzD) 3.0 hertzE) 4.0 hertz


You are watching: Two tuning forks produce sounds of wavelengths 3.4 m and 3.3 m. what beat frequency is produced?



On a trip a motorist travel at 80 km/h for the an initial 200 km, and also 60 km/h because that the remainder of the trip. If the trip is 300 km i
The typical speed is same to the total distance over total time. We can first find the time taken because that each components of the trip, since we already have the full distance. Time bring away for an initial part: 200/80 = 2.5hSecond part: 100/60 = 5/3hNow uncover the average speed:300/(2.5+5/3)= 72km/h



Identical allude charges (+50 x 10 strength -6C) are placed at the corners of a square v sides of 2.0-m length. How much external

cg-tower.com:

636.4 J

Explanation:

The potential energy between one that the charges in ~ the corner of the square and also the fifth identical charge is U = kq²/r wherein q = charge = +50 × 10⁻⁶ C and also r = distance from center of square. = √2 m (since the midpoint that the political parties = 1 m, therefore the distance from the fee at the corner to the center is thus √(1² + 1²) = √2)

Since we have four charges, the added potential power to move the fee to the center of the square is U" = 4U = 4kq²/r

U" = 4kq²/r

= 4 × 9 × 10⁹ Nm²/C² (+50 × 10⁻⁶ C)²/√2 m

= 900 Nm²/√2 m

= 636.4 J


8 0
1 year ago
A watercraft is maybe to move through still water in ~ 20 m/s. It provides a round trip to a town 3.0 km upstream. If the river flows in ~ 5m/
Salsk061 <2.6K>

cg-tower.com:

Option e) 320 s

Explanation:

Here, distance = 3.0 km = 3000 m

The velocity of boat when it is walking upstream;

Upstream velocity = velocity of watercraft in quiet water - velocity of flow flow

So, Upstream velocity

*

So,Time to walk upstream

*

The velocity of boat when that is walking downstream;

Downstream velocity = velocity of watercraft in still water + velocity of flow flow

So, Downstream velocity

*

So,Time to go downstream

*

So, full time (t) =

*

Option E is the exactly cg-tower.com.


3 0
1 year ago
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