Answer:
Abby is standing (4.5^2 + 2.3^2)^1/2 from the far speaker
D2 = 5.05 m from the far speaker
The difference in distances from the speakers is
5.05 - 4.5 = .55 m (Let y be wavelength, lambda)
n y = 4.5
(n + 1) y = 5.05 for the speakers to be in phase at smallest wavelength
y = .55 m subtracting equations
f = v / y = 340 / .55 = 618 / sec should be the smallest frequency
Answer:
6.214g/cm³
Explanation:
The question is on density of a material
Density=mass/volume
Given, mass=87grams and volume= 14 cm³ density=?
Density=m/v 87/14 =6.214g/cm³
c. 28.km
11. Cartesian Coordinates.
X Y
S -3.5 4.5
T 0 -6.5
U 3.5 -2.5
what is angle of resultant vector STU measuring from positive x axis.
24 degrees below x
12. Cartesian Coordinates
Cartesian Coordinates.
X Y
S -3.5 4.5
T 0 -6.5
U 3.5 -2.5
what is magnitude of resultant vector STU
a. 4.9 b. 24 c. 16. d. 18
Seems right option is not there. The right one will be 7./2 ie 9.9
