In an experiment similar to Perrin's the ratio of particles at 7.00 cm from the bottom of the column compared to the number of particles at the bottom of the column is 0.297:1. What will be the ratio of particles at a height of 15.0 cm from the bottom of the column be compared to the number of particles at the bottom of the column?

(11%) Problem 5: A seagull flies at a velocity of 12 m/s relative to the air straight into the wind. Randomized Variables VSA = 12 m/s t = 16 min d=6.4 km 50% Part (a) If it takes the bird 16 min to travel 6.4 km relative to the Earth, what is the velocity of the wind, in meters per second, relative the Earth? Take the direction of travel of the seagull to be positive. VAE-5.34 VAE-5.340 50% Part (b) If the bird turns around and flies with the wind, how long, in minutes, will it take to return 6.4 km? ✔Correct! sin() cos() cotan() asin() atan() acotan() cosh() tan() acos() Submit sinh() cotanh() tanh() ODegrees Radians Hint Л E ( 3 7 8 4 1 7. + VO BACKSMC 9 5 6 2 3 0 POME UND INCLITAK Feedback I give up! Grade Summary Deductions Potential Submissions Attempts remaining: 47 (0% per attempt) detailed view 1 0% 100% 2 3 0% 0% 0%

If the standard deviation of a sample is given to be 62.5 then find its variance.

In a potentiometer experiment balancing lengths for first cell and second cell are 2.5 m and 2 m respectively, when cells are E1 used separately. Hence is E2 (а) 0.8 (b) 1.0 (c) 1.1 (d) 1.25

calculate: (a) the average of fex) = Cos (3x) from II to TT (い th average of f(x) = x² from (-10) to (l0) (c) th average of frxl = 3x from (-3) to (3)

If a student measured the edge length of a cubic metal nine times as follows: 5.16, 5.29, 5.20, 5.08, 5.23, 5.36, 5.11, 5.28 and 5.12 cm. The student also measured the mass of the cube to be 380.5±0.5 g. Answer the following four questions 1.5/6 2. 3. 1. The sample standard deviation for the edge length of the cube is 0.09 cm 0.03 cm 0.05 cm 4. a. c. d. 0.12 cm e. 0.06 cm The best estimate for the edge length of the cube is a. 5.2033+0.0315 cm b. 5.2033+0.0944 cm c. 5.20+0.09 cm d. 5.20+0.06 cm 5.2010.03 cm The volume of the cubic metallic piece is a. 140.910.09 cm3 140.8+0.08 cm3 c. 14113 cm3. d. 140+2 cm3 e. 140+3 cm3 The density of the metal is a. 2.71±0.07 g/cm3 (b) 2.700±0.06 g/cm3 c. 2.700+0.005 g/cm3 d. 2.70±0.06 g/cm3 e. 2.70±0.05 g/cm3 t

An atom of rhodium (Rh) has a diameter of about2.7 * 10-8 cm. (a) What is the radius of a rhodium atom inangstroms 1A° 2 and in meters (m)? (b) How many Rh atomswould have to be placed side by side to span a distance of6.0 mm? (c) If you assume that the Rh atom is a sphere, whatis the volume in m3 of a single atom?

4 Su24 on Question 1 (Mandatory) (10 points) ✓ Saved The correct formula to calculate a Percent Error between experimental value X and accepted value A is O al X-A 100% X+A b) IX-AI 100% Ob) A Oc) IX-AI 100% (X+A) 1/2 d) IX+AI 100% (X-A) acer ) 0:16:50 remain

If a sample emits 2000 counts per second when the detector is 1 meter from the sample, how many counts per second would be observed when the detector is 3 meters from the sample? --Using the sample in above, how many counts per second would be observed when the detector is 10 meters away from the sample?

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