Answer:
Explanation:
Given
saturated air temperature by
Dew point temperature is given by
Dew point is defined as the temperature after which air no longer to uphold the water vapor fuse with it and some water vapor may condense to a liquid.
air continues to rise for 1400 m
i.e. change in temperature would be
Final temperature
Answer:
The speed of washer will be 32.144 m/s
Explanation:
Given that
time t= 3.28 s
Acceleration due to gravity
Here acceleration is constant so we cam apply the motion equation
we know that
v= u + at
At initial condition u =0 m/s
v= u + at
v= 0 + 9.8 x 3.28
v= 32.144 m/s
So the speed of washer will be 32.144 m/s
Answer:
v = 8.03 m / s
Explanation:
This is a missile throwing exercise.
y = y₀ + t - ½ g t²
indicates that y = -1.2 m and the initial velocity is
v_{oy} = v₀ sin θ
v_{oy} = 6.4 sin 2.2
v_{oy} = 0.2457 m / s
we substitute in the equation
-1.2 = 0.2457 t - ½ 9.8 t²
4.9 t² - 0.2457 t - 1.2 = 0
t² - 0.05014 t -0.2449 = 0
we solve the quadratic equation
t = [0.05014 ±√ (0.05014² + 4 0.2449)] / 2
t = [0.05014 ± 0.9910] / 2
t₁ = 0.5206 s
t₂ = -0.47 s
time must be a positive magnitude therefore the correct answer is
t = 0.5206 s
with this time we can calculate the vertical speed when the rock hits the ground
v_{y} = v_{oy} - gt
v_{y} = 0.2457 - 9.8 0.5206
v_{y} = -4.856 m / s
the negative sign indicates that the speed is down
horizontal velocity is constant, due to no acceleration
vₓ = v₀ₓ = v₀ cos 2,2
v₀ₓ = 6.4 cos 2.2
v₀ₓ = 6.395 m / s
therefore let's use Pythagoras' theorem to find the velocity
v = √ (vₓ² + )
v = √ (6,395² + 4,856²)
v = 8.03 m / s
the direction can be found with trigonometry
tan θ = v_{y} / vₓ
θ = tan⁻¹ (-4,856 / 6,395)
θ = - 37
the negative sign indicates that it is half clockwise from the x axis