We could use the change of pressure to calculate for the height climbed by the mountain hiker. The change of pressure is given by
p = rho * g * h, where p is the change of pressure, rho is the air density, g is the acceleration due to gravity, and h is the height.
Using the conversion 1 mbar = 100 Pa,
(930 - 780)(100) = (1.20)(9.80)h
15000 = 1.20*9.80*h
h = 1.28 km
Answer:
the volume decreases at the rate of 500cm³ in 1 min
Explanation:
given
v = 1000cm³, p = 80kPa, Δp/t= 40kPa/min
PV=C
vΔp + pΔv = 0
differentiate with respect to time
v(Δp/t) + p(Δv/t) = 0
(1000cm³)(40kPa/min) + 80kPa(Δv/t) = 0
40000 + 80kPa(Δv/t) = 0
Δv/t = -40000/80
= -500cm³/min
the volume decreases at the rate of 500cm³ in 1 min
Answer:
6.02×10²³
Explanation:
Mole measures the number of particles in a specific substance. The numeric value of a mole for atom or molecules is approximately 6.02×10²³ atoms or molecules.
Answer:
Part a)
Part b)
Part c)
Part d)
Part e)
Part f)
Part g)
Explanation:
Initial speed of the launch is given as
initial speed = 
angle = 
degree
Now the two components of the velocity
similarly we have
Part a)
Now we know that horizontal range is given as
maximum height is given as
so we have
time of flight is given as
Part b)
Now the speed of the ball in x direction is always constant
so at the peak of its path the speed of the ball is given as
Part c)
Initial vertical velocity is given as
Part d)
Initial speed is given as
so we will have
Part e)
Angle of projection is given as
Part f)
If we throw at same speed so that it reach maximum height
then the height will be given as
Part g)
For maximum range the angle should be 45 degree
so maximum range is
Slide tackle, goalkeeping, avoiding getting tackled, controlling the ball in the air, shooting from a hard angle etc
