All the planets is the answer
Answer: Nitrogen gas
Explanation:
Using ideal Gas's law
PV = nRT
where
Pressure of gas, P= 1atm
Volume of gas, V= 5.1L
no of moles of gas, n=
Ideal gas constant, R= 0.0821
Temperature of gas, T= 20°C = 20+273 = 293K
also, n= (mass/molar mass)
mass of the gas m = 5.9g
Molar mass of the gas = ?
So, PV = (mRT/M)
We're looking for molar mass M, then
M = mRT/PV
M = (5.9 * 0.0821 * 293)/(1 * 5.1)
M = 141.93/5.1
M = 27.8g/mol ~ 28g/mol
Since the gas is diatomic, then we say,
Atomic mass of gas = 1/2 * molar mass
Atomic mass = 1/2 * 28
Atomic mass = 14
Therefore, the gas is nitrogen.
Answer:
Yes, there will be collision.
Explanation
Initial relative velocity u = 34-5.4 = 28.6 m/s
required final relative velocity v = 0
Acceleration , suppose be a .
Distance traveled =d = 160 m
Using the formula for relative motion,
v² - u² = 2as
0 - 28.6²=2as
a = - 2.55 m s⁻².
Since this required value is more than maximum braking deceleration so , there will be collision.
The correct answers are:
- It slowed microbial growth in food.
- It allowed people to store a few days of food in their homes.
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Answer:
Vp = velocity of plane
Vpx = Vp cos 55 = 8 * .57 = 4.59 m/s velocity of plane along x-axis
Vpy = Vp sin 55 = 8 * .82 = 6.55 m/s velocity of plane along y-axis
If Wx = -3 m/s then
Vx = 4.59 - 3 = 1.59 m/s
Vy = 6.55 m/s wind does not affect vertical speed
tan theta = Vy / Vx = 6.55 / 1,59 = 4.12
theta = 76.4 deg above x-axis
V = (1.59^2 + 6.55^2)^1/2 = 6.74 m/s