Answer : To develop a scientific process is a big task. Initially the scientist or the interested researcher may start with the following steps;
a) Start with an Unsolved question;
b) Conduct experiments;
c) Analyse from the observations of the experiments
d) From the conclusions create an theoretical hypothesis;
e) Check for reproducibility of the test results.
f) Write a thesis and submit to a scientific community.
Answer:
I think the Answer is B. Longitudinal waves
The wavelength of violet light with a frequency of 750 × 10^12 Hz is 400 nanometers (nm).
Wavelength is the distance between two consecutive peaks or troughs of a wave, representing the length of one complete cycle of the wave. It is commonly used to describe the size or scale of various types of waves, including electromagnetic waves such as light.
To calculate the wavelength of light, you can use the formula:
wavelength = speed of light/frequency
The speed of light is approximately 3.00 × 10^8 meters per second.
Let's plug in the values:
frequency = 750 × 10^12 Hz
speed of light = 3.00 × 10^8 m/s
wavelength = (3.00 × 10^8 m/s) / (750 × 10^12 Hz)
Simplifying the expression:
wavelength = (3.00 / 750) × (10^8 / 10^12) m
wavelength = 4.00 × 10^-4 m
Therefore, the wavelength of violet light is approximately 4.00 × 10^-4 meters or 400 nanometers (nm).
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Answer:
1. t_reaction = 1.08 s
2. v₀₁ = 16.365 m/s
Explanation:
1. This is a kinematics exercise, let's analyze the situation a bit, we can calculate the braking distance and the rest of the distance we can use to calculate the reaction time.
Braking distance
v² = v₀² + 2 a x
when he finishes braking the speed is v = 0
0 = v₀² + 2 a x
x = -v₀² / 2a
x = - 17²/2 (-7)
x = 20.64 m
the distance for the reaction is
d = x_reaction + x
x_reaction = d - x
x_reaction = 39 - 20.64
x_reaction = 18.36 m
as long as it has not reacted the vehicle speed is constant
v = x_reaction / t_reaction
t_reaction = x_reaction / v
t_reaction = 18.36 / 17
t_reaction = 1.08 s
2. Let's find the distance traveled in the reaction time of t1 = 1.21983 s
as the speed is constant
v = x / t
x₁ = v t₁
the distance traveled during braking is
v² = v₀² + 2a x₂
0 = v₀² + 2 a x₂
x₂ = -v₀² / 2a
v = v₀
the total distance is
x_total = x₁ + x₂
x_total = v₀ t₁ + v₀² / 2a
39 = v₀ 1.21983 + v₀²/14
v₀² + 17.08 vo - 546 =0
we solve the second degree equation
v₀ = [ -17.08 ±√(17.08² + 4 546) ]/2
v₀ = [-17.08 ± 49.81 ]/2
v₀₁ = 16.365 m/s
v₀₂ = - 33.445 m/s
as the acceleration is negative the correct result is v₀₁ = 16.365 m/s
Answer:
The speed of the object is increasing.
F = M a as long as the magnitude of the acceleration is acting towards the right there will be an acceleration towards the right
The resistance of second resistor R2, is 16 times greater than the resistance of the first resistor R1.
The resistance of a cylindrical resistor is given by R = ρL/A, where ρ is the resistivity, L is the length, and A is the cross-sectional area (which is πd²/4 for a cylinder). For R1, it has length L and diameter d. For R2, it has length 8L and diameter d/1. The resistance of R2 is therefore:
R2 = ρ(8L)/(π(d/1)²/4)
By comparing R2 to R1, we find that R2 is 16 times the resistance of R1.
The resistance of second resistor R2, is 16 times greater than the resistance of the first resistor R1.
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current 0.8 A?
Answer: 88
Explanation: