Answers: 2
Physics, 22.06.2019 16:50
Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.
Answers: 2
Physics, 22.06.2019 17:10
It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .
Answers: 1
Physics, 22.06.2019 22:10
7. see worksheet 1 for values of variables x1, x2 and x3 and answer the following questions: a. for each variable find the mean, median, coefficient of skewness, range and population standard deviation. b. compared to variable x1, how are the mean and median affected by extreme values (outliers) seen in x2 and x3. c. is the median or mean the better measure of location for x2 and x3? explain. d. explain the differences in the magnitudes of the skewness coefficients for the three variables. e. what is the relationship between the range and standard deviation looking across the three variables?
Answers: 1
Physics, 22.06.2019 23:00
The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?
Answers: 1
A particle of charge 4.42 10 6 C is 9.70 cm distant from a second particle of charge 1.88 10 6 C Cal...
History, 09.02.2021 14:00
Mathematics, 09.02.2021 14:00
Chemistry, 09.02.2021 14:00
Chemistry, 09.02.2021 14:00
Mathematics, 09.02.2021 14:00
Mathematics, 09.02.2021 14:00
Biology, 09.02.2021 14:00
Chemistry, 09.02.2021 14:00
Mathematics, 09.02.2021 14:00
Spanish, 09.02.2021 14:00
Biology, 09.02.2021 14:00
Mathematics, 09.02.2021 14:00
Mathematics, 09.02.2021 14:00
Social Studies, 09.02.2021 14:00
Mathematics, 09.02.2021 14:00
Mathematics, 09.02.2021 14:00
English, 09.02.2021 14:00