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# Figure 1.27 shows the current through and the voltage

ISBN: 9780073380575 128

## Solution for problem 1.16 Chapter 1

Fundamentals of Electric Circuits | 5th Edition

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Fundamentals of Electric Circuits | 5th Edition

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Problem 1.16

Figure 1.27 shows the current through and the voltage across an element. (a) Sketch the power delivered to the element for . (b) Fnd the total energy absorbed by the element for the period of 0 6 t 6 4s. t 7 0 t 0 t 2 v(t) 10didt i(t) 6e2t t 1 t 1 v(t) 10 cos 2t V, i(t) 20(1 e0.5t ) mA t 0.3 v 3 cos 4pt V q 5 sin 4pt mC Figure 1.27 For Prob. 1.16. v (V) t (s) 5 5 0 0 4 2 i (mA) t (s)

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Notes ch. 5 LaTayna Tracy Summary:  Ruby Lowe, LaTayna’s great grandmother agreed to babysit LaTanya for her granddaughter, Natasha. Natasha is a substance abuser and had left the baby in the care of Ruby (who is in her 80s) for 3 weeks, when Natasha said she would pick LaTayna up the morning after she dropped her off.  Ruby called protective services because she could not take care of LaTayna, and Natasha had previously had her son, Martin, taken from her and put into temporary foster care for neglecting him (due to drinking). After a few months, Martin was returned to Natasha as she was following the court orders and was enrolled in a program to help her drinking. This new case was directed back to the social worker who previously worked with Natasha, Lauren White.  Lauren called Ruby only to discover that Ruby felt as though she could not care for the baby much longer because she had frequent asthma attacks and LaTanya kept Ruby up most of the night. Ruby also had no way of contacting her daughter because Natasha’s telephone was disconnected and Ruby was not able to ride a bus or get a cab. Lauren discovered that Ruby also did not know where Martin, Natasha’s other child, was staying.  Lauren came to talk to Natasha. Natasha explained that LaTanya’s father was abusive and was then arrested for armed robbery and was in prison. Natasha then applied for TANF which required Natasha to get a job immediately (she became a full time employee at a fast food restaurant). The child care program that TANF provided was not available to her, so Natasha missed several days of work trying to care for LaTanya, which caused her to eventually lose her job. Natasha became discouraged and began drinking again and took Martin to his father’s mother and took LaTayna to Ruby. Natasha was in debt and facing eviction.  An aunt was able to help Ruby take care of LaTayna and Martin’s grandmother was able to take care of him for a little longer, which helped Natasha take necessary steps to become well enough to care for her children. Natasha attended AA meetings and got control of her drinking again.  After a few weeks of sobriety, Natasha was able to have her kids home and be released from the protective services program. Lauren advocated on Natasha’s behalf to be moved up on the list for TANF child care. Historical perspectives on family and children’s services  In Ancient Greece, the birth of a child was only recognized by society 5 days after the birth. This way the mother or parents could dispose of the baby if they so wished before the 5 day mark.  18 century London: half of children died of disease or huger before age 2  In early England, children had no rights, the fathers had all of the control and were not required to protect their children, causing many kids and babies to be left behind. th  In 16 century, the average life expectancy was 30 years so children were already working and making a living on their own around age 7.  Aid was usually given in alms houses or workhouses. Child welfare movement and protective services programs  Charles Loring Brace: founded New York Children’s Aid Society 1853 o Began foster care and foster families in the long run o Gave housing to children instead of sending them out west  Mary Ellen Wilson o Often abused by foster mother, basically kept as a prisoner in her home. o Neighbors tried to help, a visitor finally stepped in and asked the police for help. When nothing was being done the visitor talked to the president of the NY society for the Prevention of Cruelty to Animals (SPCA) who sent someone to investigate. o Court order obtained, child removed from home temporarily. Much attention was brought to this case via the media, Mary Ellen was eventually removed permanently from the home and foster mother went to jail for a year  Mandated reporting: requires doctors, teachers, social workers, and other authority figures to report any suspected abuse of a child. Services and their providers: a continuum of care  Least restrictive environment: the least amount of intervention needed in a case while also provided the services needed  In home services: helps family members to live with each other, try to keep families together. Listed least invasive to most invasive in home services: o Financial aid o Family life education o Homemaker services o Day care o Family therapy o Protective services o Family­based services  Out of home services: some situations are too dangerous for children to live in, so out of home service must take place (short or long term depending) o Foster care o Group home o Adoption o Institutional care o Judicial system Women, children, and ethnic minority groups: populations at risk  Attachment theory and emotional bonding o Secure attachment shows that when a child is separated from caregiver, little distress is shown. o Ambivalent attachment: upset when separated form caregiver o Avoidant attachment: no preference of caregiver, avoidant of caregivers o Children who do not form secure attachments to caregiver are negatively impacted in their lives  Reproductive rights & single parenting o 1973 women have right to safe and legal abortions o 2006 nonprescription sale of emergency contraception pill able to be sold to women 18 and older  Ecological issues o Populations are sky­rocketting o Family planning services  Gay/Lesbian families o Children raised in gay/lesbian homes show no differences to kids raised in a heterosexual home o Gay and lesbian couples have harder time with adoptions  Multiracial families o Children raised in multiracial families are able to take different aspects from their different cultures to create themselves. o Many interracial couples have a set of in­laws that reject the idea of their child being with someone of another race o Adopted children who are a different race from their parents find it harder to fit in as peers may suggest that their parents cannot provide them with the appropriate culture background.

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Figure 1.27 shows the current through and the voltage