The distance s(in m) above the ground for a projectile fired vertically upward with a velocity of 4(a) m/s as a function of time t(in s) is given by s=4(a)t-4.(b)t2
a= 6 b=9
Find the answers to these questions
1. find t for v=0
2. find v for t=4
3. find v for t=5
what conclusions can you draw?
In: Mechanical Engineering
A speed field; It is defined by V(u,v)=(V1/L)(-xi+yj) , here V1 and L are fixed. This flow is 2 dimensional and stable.
(a)In which position in the flow area does the velocity equal the velocity V1? Make an outline of the speed field by drawing arrows for x>=0 , these arrows should represent fluid velocity in representative positions.
(b)Draw the flow line. (dx/u=dy/v)
In: Civil Engineering
1. Vanadium crystallizes in a body-centered cubic lattice, and the length of the edge of a unit cell is 305 pm. what is the density of V?
2. Vanadium crystallizes in a face-centered cubic lattice, and the length of the edge of a unit cell is 305 pm. what is the density of V?
3. Vanadium crystallizes in a single-centered cubic lattice, and the length of the edge of a unit cell is 305 pm. what is the density of V?
Please explain the works.
In: Chemistry
Two 2.3 kg bodies, A and B, collide. The velocities before the collision are v → A = ( 34 i ̂ + 29 j ̂ ) m/s and v → B = ( 19 i ̂ + 1.6 j ̂ ) m/s . After the collision, v → A ′ = ( 4.0 i ̂ + 12 j ̂ ) m/s . What are (a) the x-component and (b) the y-component of the final velocity of B? (c) What is the change in the total kinetic energy (including sign)?
In: Physics
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7/ The results of an experiment on the effects of sleep training on sleep quality showed that participants who received eight sessions of sleep enhancement training had longer sleep duration and better sleep quality than participants who did not receive the training. This led the researchers to conclude that an eight-week sleep enhancement training program is effective for improving sleep quality. What advantage of experimental research does this demonstrate? Multiple Choice Question Experimental research helps establish cause and effect relationships. Experimental research reviews media (e.g., old texts, pictures) to explore patterns in behavior. Experimental research allows the researcher to serve as a participant in the study. Experimental research uncovers as much as possible about a single person or situation. 8/ A research team designed a study of parenting style that included three groups: parents in their 30s with preschool-age children (2-5), parents in their 40s with children ages 6-11, and parents in their 50s with adolescents ages 12-18. This design is considered by the researchers to be less-time consuming and expensive than other potential designs, but they acknowledge the limitation of having only one measurement of parenting style for one point in time. As such, they cannot conclude that changes between parent groups indicate changes with age over time. Which research design does this describe? Multiple Choice Question Cross-sectional research design Cohort sequential research design Sequential research design Longitudinal research design 9/ College students are often recruited for research studies of young adult development, but this is often discussed as a limitation of those studies. How do you explain this? Multiple Choice Question It is an ethical violation to recruit college and university participants without their parents’ consent. College students are not randomly selected from the larger population, and they may not represent all young adults in our society. It is more difficult to get IRB approval for studies involving college and university students. University students tend to have higher rates of attrition compared to non-university students. 10/ A researcher who studies language development and tracks the rate at which toddlers learn new words is interested in which domain of human development? Multiple Choice Question Psychosocial Lifespan Cognitive Physical |
In: Psychology
On January 1st, 2016, Professors Credit Union(PCU) issued 6%, 20-year bonds payable with face value of 900,000. The bonds pay interest on June 30th and December 31st. The issue price of the bonds is 105.
a. Issuance of bonds on January 1st, 2016
b. Payment of interest and amortization on June 30th, 2016
c. Payment of interest and amortization on December 31st, 2016
d. Retirement of bond at maturity on December 31st, 2035
In: Accounting
3. Suppose Reuben earned a salary of $50,000 in 2015 and $55,000 in 2016.
a) The consumer price index was 120 in 2015 and 132 in 2016. What has happened to Reuben’s nominal and real income from 2015 to 2016? Show your work. –
b) Suppose Reuben owed student loans that had an interest rate of 3 percent. What was the real interest rate on Reuben’s student loans for 2015-2016. Show your work.
In: Economics
Zeile Company began operations on January 2, 2016. It employs 9 individuals who work 8‐hour days and are paid hourly. Each employee earns 10 paid vacation days and 6 paid sick days annually. Vacation days may be taken after January 15 of the year following the year in which they are earned. Sick days may be taken as soon as they are earned; unused sick days accumulate.
Zeile Company has chosen not to accrue paid sick leave until used, and has chosen to accrue vacation time at expected future rates of pay without discounting. Additional information is as follows: 2016 2017 Actual Hourly Wage Rate (2016) $15.00 (2017) $18.00
Projected Future Pay Rates Used to Accrue Vacation Pay (2016) $16.00 (2017) $18.50
Vacation Days Used by Each Employee (2016) 0 (2017) 9 Sick Days Used by Each Employee (2016) 4 (2017) 5 Instructions
(a) Prepare journal entries to record transactions related to compensated absences during 2016 and 2017.
(b) Compute the amounts of any liability for compensated absences that should be reported on the balance sheet at December 31, 2016, and 2017.
In: Accounting
Zeile Company began operations on January 2, 2016. It employs 9 individuals who work 8‐hour days and are paid hourly. Each employee earns 10 paid vacation days and 6 paid sick days annually. Vacation days may be taken after January 15 of the year following the year in which they are earned. Sick days may be taken as soon as they are earned; unused sick days accumulate.
Zeile Company has chosen not to accrue paid sick leave until used, and has chosen to accrue vacation time at expected future rates of pay without discounting. Additional information is as follows: 2016 2017 Actual Hourly Wage Rate (2016) $15.00 (2017) $18.00
Projected Future Pay Rates Used to Accrue Vacation Pay (2016) $16.00 (2017) $18.50
Vacation Days Used by Each Employee (2016) 0 (2017) 9 Sick Days Used by Each Employee (2016) 4 (2017) 5 Instructions
(a) Prepare journal entries to record transactions related to compensated absences during 2016 and 2017.
(b) Compute the amounts of any liability for compensated absences that should be reported on the balance sheet at December 31, 2016, and 2017.
In: Accounting
On August 1, 2016, Rafael Masey established Planet Realty, which completed the following transactions during the month of August. It's first month of operations:
A) August 1, 2016, Rafael Masey transferred cash from a personal bank account to an account to be used for the business, $77,500.
B) August 1 purchased land for $20,000
C) August 1, 2016, purchased three months of liability insurance for $1,200.
D) August 2, 2016, purchased truck for $32,500, paying 15,000 in cash and the rest as a loan.
E) August 3, 2016, purchased supplies on account, $2,300.
F) August 7 rented out land for three months to Acme Company, who will use it for temporary parking for their staff. Received 475 for the three-month rental.
G) August 10, 2016, earned sales commissions, receiving cash, $13,300.
H) August 15, paid creditor on account, $1,150
I) August 20, 2016, withdrew cash for personal use, $1,800.
J) August 30, 2016, paid office salaries, $2,800.
Prepare the journal entries for transactions a through g above and enter description for "adjusting" and "closing" entries.
In: Accounting