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Dahasolnce [82]
3 years ago
11

The harmonic mean of two numbers, a and b, equals 2/ 1/a +1/b. As you vary the length of a violin or guitar string, its pitch ch

anges. If a full-length string is 1 unit long, then many lengths that are simple fractions
produce pitches that harmonize, or sound pleasing together. The harmonic mean relates two lengths that produce harmonious sounds. Find the harmonic mean for the string lengths of 1 and 1/2
Mathematics
1 answer:
LekaFEV [45]3 years ago
6 0

Answer:

2/3

Step-by-step explanation:

2 / (1/a + 1/b)

2 / (1/1 + 1/(½))

2 / (1 + 2)

2/3

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A ball is thrown from an initial height of 1 meter with an initial upward velocity of 13 m/s. The ball's height h (in meters) af
Lunna [17]
Here the answer is: 0.76 and 1.84

I hope I don't have to explain it again.






4 0
3 years ago
A car is towed using a force of 1600N. The rope used to pull the car makes an angle of 25∘ with the horizontal. Find the work do
mezya [45]

Answer: 2900185 Joules

Step-by-step explanation:

Force used to tow the car is 1600N

Angle(α)= 25

Displacement = 2km

Recall that 1km= 1000m

Therefore 2km= 2000m

Workdone= FdCos α

W= 1600 * 2000 * cos 25

W=2900184.919

W= 2900185 Nm(when approximated to the nearest integer)

Since 1J = 1Nm

Work done = 2900185 J

5 0
3 years ago
Find tan(a) in the triangle<br><br> Any help will be appreciated thank you
Cerrena [4.2K]

Answer:

b 24/25

Step-by-step explanation:

SOHCAHTOA

tan is Opposite over Adjacent sides of the triangle from the perspective of angle A

so the opposite side was 24 and the adjacent side was 25

so the answer is 24/25 aka B

7 0
3 years ago
(20 Points) !!!<br><br> 5/8 times 4/5<br> Fastest get Brainliest
OleMash [197]
5/8 * 4/5
5*4     20      1
----- = ----- =  ---
8*5    40       2

5/8 * 4/5 = 1/2 or .5
4 0
3 years ago
Read 2 more answers
A wire 48 m long carries a current of 18 A from west to east.
Arisa [49]

Step-by-step explanation:

Given that,

The length of a wire, L = 48 m

Current in the wire, I = 18 A (west to east)

The magnetic field in the wire, B = 8.3\times 10^4\ T (towards south)

The magnetic force acting on the wire is given by :

F=I(L\times B)\\\\F=48\cdot18\cdot8.3\cdot10^{-4}\ N\\\\F=0.71\ N

Using right hand rule, the direction of magnetic force is upwards.

4 0
2 years ago
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