They start at 1 meter and after 10 seconds they've moved to 6 meters.
6 - 1 = 5 meters
Answer:
10.65 m/s
Explanation:
Given that an Olympic diver is on a diving platform 5.70 m above the water. To start her dive, she runs off of the platform with a speed of 1.27 m/s in the horizontal direction.
Her initial velocity U = 1.27 m/s
The height H = 5.7 m
The final velocity V will be calculated by using the formula;
V^2 = U^2 + 2gH
Substitute U, g and H into the formula
V^2 = 1.27^2 + 2 × 9.8 × 5.7
V^2 = 1.6129 + 111.72
V^2 = 113.33
V = sqrt ( 113.33)
V = 10.65 m/s
Therefore, the diver's speed, in m/s, just before she enters the water is 10.65
Answer:
In metric prefixes, if a meter were divided into 100 equal-sized subunits, a single unit would be called a centimeter.
Explanation:
Here we asked to divide 1 meter in to 100 equal parts.
Let us find out what is the length of piece when 1 m is divided in to 100 equal parts.
Length
That is length of 1 m divided into 100 equal parts is 0.01m.
We know that 0.01 m is 1 centimeter.
So, in metric prefixes, if a meter were divided into 100 equal-sized subunits, a single unit would be called a centimeter.
No. Only velocity depends on direction.
Answer:
z = 0.8 (approx)
Explanation:
given,
Amplitude of 1 GHz incident wave in air = 20 V/m
Water has,
μr = 1
at 1 GHz, r = 80 and σ = 1 S/m.
depth of water when amplitude is down to 1 μV/m
Intrinsic impedance of air = 120 π Ω
Intrinsic impedance of water =
Using equation to solve the problem
E(z) is the amplitude under water at z depth
E_o is the amplitude of wave on the surface of water
z is the depth under water
now ,
taking ln both side
21.07 x z = 16.81
z = 0.797
z = 0.8 (approx)