Maximum and minimum of two concurrent forces occur when the forces are collinear. Maximum occurs when they are in the same direction, and minimum occurs when they are opposite in directions.
This reduces the problem to a sum an difference problem.
A+B=45
A-B=5
So
A=(45+5)/2=25
B=(45-5)/2=20
Check:
maximum=25+20=45
minimum=25-20=5
ok
Force vector is given as
now we need to find the magnitude of this force
as we know that
so here we will find the net force
so it is having magnitude as 35.2 N
Answer:
0.434 m
Explanation:
We are given that
Mass per unit length=
1 kg=1000 g
Tension=350 N
Fundamental frequency=f=440 Hz
We have to find the length you should make it.
We know that
Using the formula
l=0.434 m
Hence, you should make it 0.434 m long.
Answer:
the output power of the hearing aid in two significant figures is 3.2 × 10⁻⁸ W
Explanation:
Output power of sound is given as;
P = I*A
where;
I is the sound intensity = 90dB = 1 × 10⁻³ W/m²
A is the area through which the transmits;
since the canal is circular in shape.
Given;
D as diameter = 6.4mm = 0.0064 m
Output power of the hearing aid = (1 × 10⁻³ W/m²)*(3.217 × 10⁻⁵ m²)
= 3.2 × 10⁻⁸ W
Therefore, the output power of the hearing aid in two significant figures is 3.2 × 10⁻⁸ W.
Answer:
The stored energy is .
Explanation:
Given that,
One side of square plates = 8.5 cm
Distance = 2.5 mm
Charge = 14 nC
We need to calculate the energy stored
The energy is stored by the electric field between two square plates is defined as,
We calculate the area iof square plates
Now, put the value into the formula
Hence, The stored energy is .