Reference no: EM131230574
Please show work and how you got the answer. It is due September 1 2016
1.) A sound wave with a frequency of 250 Hz moves with a velocity of 340 m/s. What is the distance from one condensation to the next?
2.) The air temperature was 73.30 during a thunderstom and thunder was timed 6.09 after lightning was seen. How many feet away was the lightning strike?
3.) Sound from the siren of an emergency vehicle has a requency of 851.0 Hz and moves with a velocity of 344.9 m/s. what is the distance from one condensation to the next?
4.) Water waves are observes to pass under a brifge at a rate of one complete wave every 5.8s. what is the period of these waves?
B) what is the frequency ? Answer must be given in Hz
5.) A soundwave in a steel rail of a railroad truck has a frequency of 649 Hz and a wavelength of 7.7m what is the speed of sound in this rail?
6.) A ship at sea sounds a whistle blast and an echo returns from the coastal land 16.8 s later. How many km is it to the coastal land if the air temperature is 25.2C ?
7.) A vibrating object produces periodic waves with a length of 45 cm and a frequency of 41 Hz. How fast do these waves move away from the object?
8.) Medical applications of ultra sound use frequencies up to 2.00 x 10^7 Hz. What is a wavelength of this frequency in 20C air?
9.) Is it possible for two people to simultaneously operate 850 W hair dryers on the same 120 V circuit without tripping a 15 A circuit breaker? Yes or no? Explain each dryer draws 8.50, 7.1, 3.5, or 4.7A of current, so two such devices will, will not cause a 15- A breaker to trip .
10.) Round final answer to nearest cent. What is the monthly (30 days) energy cost of leaving a 40-W bulb on continuously if electricity cost 10 cents per kWh?
11.) An automobile starter rated at 2.30 hp draws how many amps from a 12.0 v battery?
12.) An inflated rubber balloon is rubbed with a wool cloth until an excess of 1.00 x 10^5 electrons s on the balloon. What is the magnitude of the charge on the balloon?
13.) A ll.0 ? lightbulb is connected to a 12.0 V battery.
(a) What current flows through the bulb?
(b) What is the power of the bulb?
14.) An electric motor draws a current of 15.9 A in a 120 V circuit. What is the power of this motor in W?
|
What are the overall symptoms of schizophrenia
: Individuals suffering from schizophrenia may engage in violent behavior, which might cause them to become involved in the legal system. What are the overall symptoms of schizophrenia, and which of these symptoms might contribute most to violent be..
|
|
Describe the structure and role of the securities
: SEC Structure and Role : - Briefly describe the structure and role of the Securities and Exchange Commission (SEC).
|
|
What advantages or disadvantages do bilinguals have
: Given what you have learned about being bilingual this week, how do you think second language acquisition should be approached? How do you think your approach could increase cognitive function in different professional settings? Be sure to defend ..
|
|
Discuss the role of obsolete programming languages
: Discuss the role of obsolete programming languages, operating systems, and the arcane details of configuring and operating older hardware platforms.
|
|
What current flows through the bulb
: Is it possible for two people to simultaneously operate 850 W hair dryers on the same 120 V circuit without tripping a 15 A circuit breaker? Yes or no? Explain each dryer draws 8.50, 7.1, 3.5, or 4.7A of current, so two such devices will, will n..
|
|
Problem of developing an effective portfolio
: What motivated you to tackle the problem? What abilities did you have that could be used to solve the problem? Did you seek advice? Did you have to extend your current knowledge?
|
|
Discusses latest it job skills needed in the current market
: Complete a 2-3 page paper with an abstract and conclusion in APA format that discusses latest IT job skills needed in the current market for IT professionals and how one would prepare themselves for the current job set skills in the IT market.
|
|
How securities and exchange commission attempts
: SEC Enforcement: - Explain how the Securities and Exchange Commission attempts to prevent violations of SEC regulations.
|
|
Stock exchange transaction costs
: Stock Exchange Transaction Costs: - Explain how foreign stock exchanges such as the Swiss stock exchange have reduced transaction costs.
|