Answer:
Explanation:
We shall represent all the forces in vector form .
Force of 95 pounds
F₁ = 95cos100 i + 95sin100j
= -16.5 i +93.55 j
force of 75 pounds
F₂ = 75cos200 + 75sin200j
= -70.47 i - 25.65 j
force of 146 pounds
F₃ = 146cos300 i + 146sin300j
= 73i -126.44 j
Resultant force
R = F₁+ F₂ + F₃
= -16.5 i +93.55 j -70.47 i - 25.65 j +73i -126.44 j
= -13.97 i - 58.54 j
Magnitude of R = √ ( 13.97² + 58.54² )
= 60.18
If Ф be angle of resultant with axis
tanФ = - 58.54 / -13.97
Ф = 76.57 + 180 = 256.57 , because both x and y components are negative. So the resultant will be in third quadrant.
Answer:
Final volume = 0.42 cubic meters
Explanation:
The question is incomplete. The initial conditions are
Initial temperature ,
= 310 K
Initial volume ,
= 0.5 cubic meter
Number of moles = 2.5
Since, from the ideal gas equation we get,
PV = nRT
P 
= 12886.7 Pa
Final pressure= 15464.04 Pa
Since temperature is constant,
PV = constant
V = 0.42 cubic meters.
Hence final volume = 0.42 cubic meters
Answer:
The earth, The sun, the solar system and the milky way.
Radio waves<span> have lower frequencies and longer wavelengths than microwaves. They are used to transmit </span>television<span> and </span>radio<span> programmes.</span>Television uses<span> higher frequencies than </span>radio. A radio<span> programme receiver does not need to be directly in view of the transmitter to receive programme </span>signals<span>.</span>
Answer:
Explanation:
mass of electron in amu = .000549
mass of electron = mass of proton
total mass of electron and proton = 2 x1.098 x 10⁻³ = 2.196 x 10⁻³ amu
1 amu = 931 x 10⁶ eV
2.196 X 10⁻³ amu = 2.196 x 931 x 10³ eV
= 2.044 X 10⁶ eV.
= 2044 X 10³ ev
So minimum energy required = 2044 x 10³ eV.
Wavelength of photon required = 12375/2044 x 10³ A
= 6.054 X 10⁻³A. =6.054 X 10⁻¹³ m
frequency of photon = 3 x 10⁸/6.054x 10⁻¹³
= .4955 x 10¹⁶Hz.
= 4.955 x 10¹⁵ Hz
