Cars A and B move in the same direction in adjacent lanes. The position x of car A is given in Fig. 2-30, from time t = 0 to t = 7.0 s. The figure’s vertical scaling is set by x s = 32.0 m. At t = 0, car B is at x = 0, with a velocity of 12 m/s and a negative constant acceleration a B . (a) What must a B be such that the cars are (momentarily) side by side (momentarily at the same value of x ) at t = 4.0 s? (b) For that value of a B , how many times are the cars side by side? (c) Sketch the position x of car B versus time t on Fig. 2-30. How many times will the cars be side by side if the magnitude of acceleration a B is (d) more than and (e) less than the answer to part (a)? Figure 2-30 Problem 39.
Cars A and B move in the same direction in adjacent lanes. The position x of car A is given in Fig. 2-30, from time t = 0 to t = 7.0 s. The figure’s vertical scaling is set by x s = 32.0 m. At t = 0, car B is at x = 0, with a velocity of 12 m/s and a negative constant acceleration a B . (a) What must a B be such that the cars are (momentarily) side by side (momentarily at the same value of x ) at t = 4.0 s? (b) For that value of a B , how many times are the cars side by side? (c) Sketch the position x of car B versus time t on Fig. 2-30. How many times will the cars be side by side if the magnitude of acceleration a B is (d) more than and (e) less than the answer to part (a)? Figure 2-30 Problem 39.
Cars A and B move in the same direction in adjacent lanes. The position x of car A is given in Fig. 2-30, from time t = 0 to t = 7.0 s. The figure’s vertical scaling is set by xs = 32.0 m. At t = 0, car B is at x = 0, with a velocity of 12 m/s and a negative constant acceleration aB. (a) What must aB be such that the cars are (momentarily) side by side (momentarily at the same value of x) at t = 4.0 s? (b) For that value of aB, how many times are the cars side by side? (c) Sketch the position x of car B versus time t on Fig. 2-30. How many times will the cars be side by side if the magnitude of acceleration aB is (d) more than and (e) less than the answer to part (a)?
Watch the video of Cooper’s play, while conducting and documenting your observation using a chosen observation tool.
Case Study 1b - Cooper
Carol has asked you to support the babies and toddler’s room educators this week. She has requested that you complete an observation on Cooper, who is a 10-month-old toddler.
Carol wants to see how well you conduct an observation and is interested in how you manage to communicate in any observations made, using a strengths-based, non-judgemental, anti-biased approach, as this is a fundamental part of creating a supportive and respectful culture at Little Catalysts ELC.
Video: Cooper's play (6:45 min)
Resources
Module 7 eLearns
Template: Learning story observation, Section 1
Template: Running record observation, Section 1
Template: Anecdotal record observation, Section 1
Video: Cooper's play (6:45 min)
Complete and upload an observation of Cooper to support educators in future curriculum planning. Choose one (1) of the observation…
1. An ideal gas is taken through a four process cycle abcda. State a has a pressure of 498,840 Pa. Complete the tables
and plot/label all states and processes on the PV graph. Complete the states and process diagrams on the last page.
Also, provide proper units for each column/row heading in the tables.
Pressure (Pa)
500,000
450,000
400,000
350,000
300,000
250,000
200,000
150,000
100,000
Process
ab
bc
cd
da
States
P( )
V( )
50,000
0
0.000
T = 500 K
T= 200 K
0.001
0.002
0.003
0.004
0.005
Volume (m^3)
Nature of Process
isothermal expansion to Vb = 0.005 m³ (T = 500 K)
isometric
isothermal compression to V₁ = 0.003 m³ (T = 200 K)
adiabatic compression to VA = 0.001 m³
b
C
a
T()
U ( )
Processes
a-b
Q( )
+802.852
W()
AU ( )
b-c
c→d
+101.928
da
Cycle
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