For the answer to the question above,
I'll write down my solution to your problem
sin(A+B) = sinAcosB + cosAsinB
<span>sin(2A) = 2sinAcosA </span>
<span>cos(2A) = 1-2sin^2A </span>
<span>sin(3x) = sin(2x+x) </span>
<span>sin(3x) = sin(2x)cos(x) + cos(2x)sin(x) </span>
<span>= 2sin(x)cos(x)cos(x) + (1-2sin^2(x))sin(x) </span>
<span>= 2sin(x)cos^2(x) + sin(x) - 2sin^3(x) </span>
<span>= 2sin(x)(1-sin^2(x)) + sin(x) - 2sin^3(x) </span>
<span>= 2sin(x) - 2sin^3(x) + sin(x) - 2sin^3(x) </span>
<span>= 3sin(x) - 4sin^3(x)
</span>My closest answer is multiple choice letter D.
Explanation:
In an acid solution, the concentration of H₃O⁺ ions is more than OH⁻
In a basic solution, the concentration of OH⁻ is more than that of H₃O⁺
By definition:
According to Arrhenius theory;
An acid is a substance that interacts with water to produce excess hydroxonium ions, H₃O⁺ in an aqueous solution. The hydroxonium ions formed as a result of the chemical bonding between the oxygen of water molecules and the protons released by the acid due to its ionization.
A base is a substance that interacts with water to produce excess hydroxide ions, OH⁻ in an aqueous solution. The common bases are NaOH and KOH
learn more:
acid brainly.com/question/5121777
#learnwithBrainly
Type of image is either real or virtual.
Real images (convex)
-light rays travel to a real image from the object
Virtual images (concave)
-not really there and no light reaches them
d. type of light source
**just an opinion, i might be incorrect
Answer:
8.4 kN
Explanation:
Change in momentum = m₁v₁- m₂v₂ = m(v₁-v₂) = 1.2[8 - (-6)] = 16.8kgm/s
v₂ has been taken as negative because velocity of object colliding ball as +ve. Both are in opposite directions.
Change in momentum = impulse = Force × Time
Time = 2 ms = 2 milli seconds = 0.002 s.
Force = Change in momentum/Time = 16.8/0.002 = 8.4kN
Answer: _Pulse Doppler RADAR_ type of RADAR routes the calculated Doppler shift through a series of frequency-filters (bandpass filters), which results in the ability to distinguish between targets of different velocities.
Explanation: A pulse-Doppler RADAR determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity. It merges the characteristics of pulse radars & continuous-wave radars, which were formerly distinct due to the complexity of the electronics.