PHys203_Lab 1 Significant Figures & Excel

An brand of fruit snacks claims that each bag of fruit snacks has a mass of25.5g. After weighing three bags, Paolo observes the masses to be 25.5g,25.6g, and 25.7g.How can Paolo describe the accuracy and precision of the first bag hemeasured?a. Accurate, but not preciseb. Neither accurate nor precisec. Accurate and precised. Precise, but not accurate

Can you answer these physics questions?

a. 2πR2+2πRh2πR2+2πRh b. 2πR2+2πh2πR2+2πh c. πR2hπR2h d. πD2+πDhπD2+πDh e. 2πR+2πRh

1. The following data are the measurements of the dimensions of a box: l = 8.6 ± 0.5 cm  h = 20.19 ± 0.01 mm  w = 0.75 ± .02 mHow should the volume of the box be reported (central value ± uncertainty) incm3? Show solution.2. If the accepted value of the volume of the box in the previous question is 1300 cm3, is the measurement acceptable? Explain.

Kyle wanted to find the area of a circle. He measured the radius of the circle as 5.4 cm. Later, the actual radius of the circle was more accurately measured as 5.35 cm. What is the relative error in his area calculation to the nearest thousandth? a. 0.018 b. 0.019 c. 0.020 d. 0.022

A. Volume Measurement Problem: You have 3 empty containers. One container holds 3L, a second holds 5L and a third, holds 9L. How can you use these containers to measure exactly 7L of water? The steps in the problem have been "framed out". Follow the steps and write what you did to get 7L. Frame on Volume Measurement Step 1 2 3 5 3-L container 5-L container 9-L container Total number of Liters To get exactly 7liters from 3 containers holding 3L, 5L and 9L, I did these steps: First, Second, Third, Fourth, Finally, By following these steps, I

Question 2 A person measures the velocity of a biker riding in a straight line along a sidewalk using a stopwatch. The time it took for the biker to pass 30 squares on the sidewalk was 5.28 seconds. The area of the squares on the sidewalk was measured to be 2847 in?. Calculate the velocity of the biker in m/s. Note: 1 in = 2.54 cm Round your answer to 2 decimal places.

True or false 1. The unit-factor method is used as a validity tool in deriving equations. 2. Kinetic energy is dependent on the mass and velocity of an object. 3. Acceleration is speed with direction. 4. Physical change in matter alters its appearance and identity. 5. Height is the greatest measurement of a 3D object.

tabletop 91.41m±0.05m cube ruler clipper micrometer Triple beam balai digital balance 3.30cm±0.05cm 2.184±0.001cm 27.310±0.005mm 64.42±0.05g 64.58±0.01g 2.92m±0.05m 2.71cm±0.05cm 2.482±0.001cm 25.251+0.005mm 216.20m±0.05m 2.50cm±0.05cm 3.136±0.001cm 34.140±10.0005mm

Describe possible sources of random and systematic errors in the following measurement.   Speeds of cars recorded by a police officer using a radar gun.   Part 1 Which of the following would be random errors in this​ situation? Select all that apply.     A. Errors made by using a radar gun that is incorrectly calibrated and consistently reads high or low.   B. Errors made by the police officer in reading the radar gun.   C. Errors in the speedometers of the cars observed.   D. Errors made by the police force when choosing which officer to check the speeds.   E. Errors made when calibrating the radar gun.   F. Errors made by the police officer in recording the speeds.

C. leas t del Niu 3. Three students make measurements (in m) of the length of a rod using a meter stick. Each student's measurements are tabulated in the table below. Using your calculator in statistic mode calculate the mean L, standard deviation S and uncertainty u of the measurements. Student L1 L3 L2 1.4711 L4 1.4715 SD u Student 1 1.4717 1.4722 1,4716 t.4754 1.4710 1.4753 1.4759 1.4756 1.4749 Student 2 Student 3 1.4719 1.4723 1.4705 1.4719 Note that the actual length of the rod is determined by a laser measurement technique to be 1.4715 m (this should be considered the standard value). a) State how one determines the accuracy of a measurement. Apply your idea to the measurements of the three students above and state which student has the most accurate measurement.

Reduce the following ratio to its lowest terms and to an equivalent ratio with 1 as the smallest term. 13 : 5/18 : 18 2.2 : 7.9 : 65/4 Determine the following ratios in simplest form: a. 25 minutes to 4 hours and 50 minutes b. 500 m to 3.1 km c. 600 g to 10.4 kg   What is the ratio of 12 minutes to 12 hours, reduced to its lowest terms?   Can you please answer all. Thanks

Determine which one of the following equations is dimensionally consistent. A. F = mAz? B. FAV = mAæ² C. FAr = ; mAv² D. FAt = AV E. FAV = 2mAt² where F is force, m is mass, z is distance, V is velocity, and t is time. Select v

Basic rules in considering a formula or writing an equation in Physics would be : 1. The fundamental or base quantities such as length [L], mass [M], time [T], are called dimensions 2. Dimensional analysis is a procedure to verify the experimental correctness of an equation. 3. Both sides of an equation must match in numerical values even though dimensions are not matched 4. Dimensions may be treated like algebraic quantities. Which of the above rules are correct? . Rules 2 and 4 • Rules 1 and 3 • Rules 1 and 2 . Rules 1 and 4

According to Timothy Treadwell in 2001 "Now, the bears I live with average, the males are on average twelve hundred pounds. They're the largest bears in the world and they've been clocked at 41 [mph] and they've run a hundred meter dash in 5.85 seconds which human on stimulants doesn't even approach. a. Compute the speed of a grizzly bear using Mr. Treadwell's hundred-meter statement. b. Compute the momentum of a grizzly bear using the speed you calculated in part a. and the average mass stated by Mr. Treadwell. c. How fast would a 250 lb man have to run to have the same momentum you calculated in part b? d. How fast would a 4000 lb car have to drive to have the same momentum you calculated in part b?

1%A9 li. t LTET 4G+ Vol) O A X O U 9:-7 Second H.W.pdf 1. Draw and label the vector with these components. Then determine the magnitude and angle of the vector. a- Az = 3 ,A, = -2 b- B, = -2 ,B, = 2 2. What is the speed of horse in meter per second that runs a distance of 1.2 miles in 2.4 minutes? 3. A car moving along X- axis according on the function: X (t) = 2 t2 + 5t +7 on [1,2] Find: a- The average velocity. b- The acceleration at 3s. 4. Julie is walking around a track at a 2m/s for some exercise. She then decides to start jogging so she accelerates at a rate of 0.5m/s? for 3 seconds. How far did Julie travel from the time she started to accelerate to the end of the 3 seconds? 5. Ralph uses a 2000 to do this. force to push his car along a road for 1000 m. It takes him500 s a- Calculate the amount of work that Ralph did on the car. b- Calculate the amount of power that he generated. II