The reaction time of a student as determined by her teammates in the laboratory are as follows: a. b. C. 2.1 s, 1.5 s, 1.9 s, 1.6 s, 1.5 s Compute the student's mean reaction time. What is the absolute uncertainty of the student's reaction time? Solve for the variance of the measurement of the student's reaction time. Express the student's reaction time in terms of standard deviation.

The reaction time of a student as determined by her teammates in the laboratory are as follows: a. b. C. 2.1 s, 1.5 s, 1.9 s, 1.6 s, 1.5 s Compute the student's mean reaction time. What is the absolute uncertainty of the student's reaction time? Solve for the variance of the measurement of the student's reaction time. Express the student's reaction time in terms of standard deviation.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter1: Units And Measurement

Section: Chapter Questions

Problem 83AP: A marathon runner completes a 42.188-km course in 2 h, 30 min, and 12s. There is an uncertainty of...

See similar textbooks

Similar questions

(a) A person’s blood pressure is measured to be 1202mmHg . What is its percent uncertainty? (b) Assuming the same percent uncertainty, what is the uncertainty in a blood pressure measurement of 80 mm He?
(a) If your speedometer has an uncertainty of 2.0 km/h at a speed of 90 km/h, what is the percent uncertainty? (b) If it has the same percent uncertainty when it reads 60 km/h, what Is the range of speeds you could be going?
A marathon runner completes a 42.188-km course in 2 h, 30 min, and 12s. There is an uncertainty of 25 m in the distance traveled and an uncertainty of 1 s in the elapsed time. (a) Calculate the percent uncertainty in the distance. (b) Calculate the percent uncertainty in the elapsed time. (C) What is the average speed in meters per second? (d) What is the uncertainty in the average speed?
(a) How many significant figures are in the numbers 99 and 100? (b) If the uncertainty in each number is 1, what is the percent uncertainty in each? (c) Which is a more meaningful way to express the accuracy of these two numbers, significant figures or percent uncertainties?
The first length measured in a laboratory experiment is 2.5 ± 0.1 m and the second length is 3.4 ± 0.1 m.a. What is the sum of the lengths?b. What is the difference in the lengths?c. What is the percentage uncertainty in each a and b?
A 11-inch candle is lit and burns at a constant rate of 1.3 inches per hour. Let t represent the number of hours since the candle was lit, and suppose R is a function such that R(t) represents the remaining length of the candle (in inches) t hours after it was lit. a. Write a function formula for R in terms of t. R(t)=11-1.3t Preview b. What is the domain of R relative to this context? Enter your answer as an interval. [0,8.46] Preview c. What is the range of R relative to this context? Enter your answer as an interval. Preview no answer given d. What is the domain of R¯ relative to this context? Enter your answer as an interval. |其 Preview e. What is the range of R1 relative to this context? Enter your answer as an interval. Preview f. Solve R(t) = 6.2 for t. t = 3.69 Preview g. What does your solution in part (f) represent in this context? Select all that apply. How many hours since the candle was lit when it is 6.2 inches long. * The length of the candle (in inches) 6.2 hours after…
A mass m = 50 g is suspended from a spring with spring constant k 8.0 N/m. 1. Determine the force acting on the mass when it is displaced 8 cm from its equilibrium position. If the mass is then released, what is the period of oscillation? What is the frequency? 2. What is the expression for the uncertainty in the total energy Etot of equation 4.6? Assume an uncertainty in k of dk, uncertainty in m of dm, uncertainty in x of dx and an uncertainty in v of dv. Assume g is perfectly known (i.e., ôg = 0). Refer to the section on Uncertainty Calculations in the introduction, Section 0.2.2, for more details. (Hint: first compute the uncertainties of the three terms in the sum, then add the uncertainties in the sum together.) 6.
I1:00:00 PM Problem 3: Suppose the speed of light were only 3000.0 m's. A jet fighter moving toward a target on the ground at 810 m/s shoots bullets, each having a muzzle velocity of 1050 m's. Randomized Variables v-810 m/s v2 1050 m's ed What is the velocity of the bullets relative to the target in km's? Grade Sommary Deductions 0% Potential 100%
1. a). A value of the acceleration of free fail g was determined by measuring the periodof oscillation T of a simple pendulum of length l. The relation between g, T andl is given by: g= 4π (l /T2) In the experiment, l was measured as 0.55±0.02 m and T was measured as1.50±0.02 s. Find the:i. Value of gii. Uncertainty in the value of g B. (a) State newton’s second law of motion and write an equation.(b)Define the term INERTIA. (c) Define impulse and write the equation.
A block A, placed on a horizontal surface with friction, is connected by a rope passing through a pulley to a suspended block B. The mass of block B is sufficient to set the system in motion and both masses accelerate with acceleration a. Test your model to obtain the kinetic friction coefficient uc and its uncertainty for this phase of the motion using the following values: We use g=(9.81±0.01) m/s^2 as usual. mA=(0.415 ± 0.005)kg; mB=(0.22 ± 0.004)kg; a=(1.48±0.04) m/s^2; find an equation giving the modulus of kinetic friction (fc) under the horizontal slider when it is accelerated by the fall of the suspended mass and the value of uncertainty as well.
Determine the absolute uncertainty for the calculated value in the following scenarios. Express as (computed result) ± (absolute uncertainty) (units). You measure the volume of a stainless steel sphere by placing it into a100 mL graduated cylinder with an uncertainty of 1 mL, with 20 mL ofwater initially. After the sphere settles, the graduated cylinder now reads22 mL. What is the volume with uncertainty? Please use the formula I posted ! Thank you!
A mass m = 50 g is suspended from a spring with spring constant k = 8.0 N/m. 1. Determine the force acting on the mass when it is displaced 8 cm from its equilibrium position. If the mass is then released, what is the period of oscillation? What is the frequency? 2. Assuming an uncertainty in k of dk, uncertainty in m of dm, uncertainty in x of dx, uncertainty in v of du, and that g is perfectly known (i.e., dg = 0), what is the expression for the uncertainty in the total energy Etot of equation 3.1? Etot = Uspring + Ug + K = = kx² +mgx + nv² 1 1 = = kx² (3.1) 2