A cork on the surface of a swimming pool bobs up and down once every second on some ripples. The ripples have a wavelength of
. If the cork is
from the edge of the pool, how long does it take a ripple passing the cork to reach the edge?
We are given:
frequency of wave:
wavelength of wave:
distance of cork from edge of pool:
We are required to determine the time it takes for a ripple to travel between the cork and the edge of the pool.
The wavelength is not in SI units and should be converted.
The time taken for the ripple to reach the edge of the pool is obtained from:
We know that
Therefore,
A ripple passing the leaf will take
to reach the edge of the pool.
The following video provides a summary of the concepts covered so far.
Khan academy video on waves - 1
Waves
When the particles of a medium move perpendicular to the direction of the wave motion, the wave is called a
wave.
A transverse wave is moving downwards. In what direction do the particles in the medium move?
Consider the diagram below and answer the questions that follow:
the wavelength of the wave is shown by letter
.
the amplitude of the wave is shown by letter
.
Draw 2 wavelengths of the following transverse waves on the same graph paper. Label all important values.
Wave 1: Amplitude = 1 cm, wavelength = 3 cm
Wave 2: Peak to trough distance (vertical) = 3 cm, peak to peak distance (horizontal) = 5 cm
You are given the transverse wave below.
Draw the following:
A wave with twice the amplitude of the given wave.
A wave with half the amplitude of the given wave.
A wave travelling at the same speed with twice the frequency of the given wave.
A wave travelling at the same speed with half the frequency of the given wave.
A wave with twice the wavelength of the given wave.
A wave with half the wavelength of the given wave.
A wave travelling at the same speed with twice the period of the given wave.
A wave travelling at the same speed with half the period of the given wave.
A transverse wave travelling at the same speed with an amplitude of 5 cm has a frequency of 15 Hz. The horizontal distance from a crest to the nearest trough is measured to be 2,5 cm. Find the
period of the wave.
speed of the wave.
A fly flaps its wings back and forth 200 times each second. Calculate the period of a wing flap.
As the period of a wave increases, the frequency
increases/decreases/does not change.
Calculate the frequency of rotation of the second hand on a clock.
Microwave ovens produce radiation with a frequency of 2 450 MHz (1 MHz =
Hz) and a wavelength of 0,122 m. What is the wave speed of the radiation?
Study the following diagram and answer the questions:
Identify two sets of points that are in phase.
Identify two sets of points that are out of phase.
Identify any two points that would indicate a wavelength.
Tom is fishing from a pier and notices that four wave crests pass by in 8 s and estimates the distance between two successive crests is 4 m. The timing starts with the first crest and ends with the fourth. Calculate the speed of the wave.
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
hello. autism is a umbrella term. autistic kids have different disorder overlapping. for example. a kid may show symptoms of ADHD and also learning disabilities.
before treatment please make sure the kid doesn't have physical disabilities like hearing..vision..speech problem. sometimes these
Jharna
continue..
sometimes due to these physical problems..the diagnosis may be misdiagnosed.
treatment for autism.
well it depends on the severity.
since autistic kids have problems in communicating and adopting to the environment.. it's best to expose the child in situations where the child
Jharna
child interact with other kids under doc supervision.
play therapy.
speech therapy.
Engaging in different activities that activate most parts of the brain.. like drawing..painting. matching color board game.
string and beads game.
the more you interact with the child the more effective
Jharna
results you'll get..
please consult a therapist to know what suits best on your child.
and last as a parent. I know sometimes it's overwhelming to guide a special kid.
but trust the process and be strong and patient as a parent.
Jharna
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