mpo From Safari Consider the circuit below. C, = 160 mF %3D R, =D 18kQ +. 두V2=24 V R, = 18 k) EV 24 V R. 36 k0 R, 36 kQ (a) What is the RC time constant of the circuit (in s)? 7920 (b) What is the initial current (in A) in the circuit once the switch is closed? 0.000970 (c) How much time (in s) passes between the instant the switch is closed and the time the current has reached half of the initial current? 3430.35 Additional Materials MacBook Air 20 F3 888 F1 F2 F4 F5 F6 F7 F8 F9 2$ 4 @ 23 2 3 5 6 8 S н F. 00

In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 4.8 m/s at an angle of 15 below the horizontal. It is released 0.90 m above the floor.

Part B and D, Part D only Asks to Explain Part C

Distance travelled (cm) 120 100 80 60 40 20 0 0 the data collected the students. Distance travelled vs. average spring length during set time intervals of 0.10 seconds. 20 40 60 O 80 100 120 Average spring length (cm) ● 140 O 160 a. Draw a line or curve of best fit (trendline) on the graph above. Comment on the precision of the data, using evidence from the graph. C Hence calculate the average speed of the puck over this time interval. 180 200 IAE3 IAE3 Use your trendline to estimate the distance that would be travelled by the puck in the same time interval if the average spring length was 60cm. Clearly label the point you used to determine your answer on the graph. IAE3 (1) I I JAF3 (1)

A0.250 kg toy is undergoing SHM on the end of a horizontal spring with force constant 300 N/m. When the toy is 0.0160 m from its equilibrium position, it is observed to have a speed of 0.200 m/s. Part A What is the toy's total energy at any point of its motion? Express your answer with the appropriate units. HẢ E = Value Units Part B What is the toy's amplitude of the motion? Express your answer with the appropriate units. ? A = Value Units Part C What is the toy's maximum speed during its motion?

Amir starts riding his bike up a 200-m-long slope at a speed of 12 km/h, decelerating at 0.20 m/s² as he goes up. At the same instant, Becky starts down from the top at a speed of 6.0 km/h, accelerating at 0.80 m/s? as she goes down. Part A How far has Amir ridden when they pass? Express your answer with the appropriate units.

Part F What is the speed u of the object at the height of ((1/2)h max?   Express your answer in terms of v and g. You may or may not use all of these quantities. u=

A study of bluefish locomotion found that their tail motion produces an average thrust of 0.65 N. Fish are streamlined, so drag can be neglected for fish swimming at slow speeds. Suppose a 2.0 kg bluefish that is coasting horizontally at 0.85 m/s suddenly begins tail motion.

Susan, driving north at 47 mph , and Shawn, driving east at 64 mph , are approaching an intersection.     Part A What is Shawn's speed relative to Susan's reference frame? Express your answer to two significant figures and include the appropriate units.       vrelative =

A man pulling an empty wagon causes it to accelerate at 1.4 m, m/s². Part A What will the acceleration be if he pulls with the same force when the wagon contains a child whose mas three times that of the wagon? Express your answer in meters per second squared. a = ΨΕ ΑΣΦ ? m/s²