(12pts) An experiment was conducted to examine the effect of age on heart rate when a person is subjected to a specific amount of exercise. Ten male subjects were randomly selected from four age groups: 10-19, 20-39, 40-59, and 60-69. Each subject walked on a treadmill at a fixed grade for a period of 12 minutes, and the increase in heart rate, the difference before and after exercise, was recorded (in beats per minute). Answer the questions based on the printout.

(2pts) Write the null and alternative hypotheses for this test.

(2pts) Give the test statistic and P-value for this problem.

(4pts) Write your conclusions for this test in terms of the story.

(4pts) The output for the Bonferroni Multiple Comparisons procedure is given below. If it is appropriate to use that at this point, explain why and give the conclusions to the procedure. If it is not appropriate to use Bonferroni at this point, explain why not.

In an experiment, 25.5 g of metal was heated to 98.0°C and then quickly transferred to 150.0 g of water in a calorimeter. The initial temperature of the water was 23.0°C, and the final temperature after the addition of the metal was 32.5°C. Assume the calorimeter behaves ideally and does not absorb or release heat.

1.) What is the value of the specific heat capacity (in J/g•°C) of the metal?

_____ J/g•°C

Suppose that you performed a new glucose experiment with a different set of standards and a different wavelength, where x is concentration is M and y is ∆A.

The ∆A for the unknown is 0.123. Calculate the relative uncertainty on the unknown, i.e., u/c_unk. Use 2 sign figs

A student conducts an experiment boiling water in a 3.96L pot. The Diameter of the base of the pot is 7-3/4” and the height is 5-1/8”.

2 Liters of water @ 23°C takes 17 minutes before it reaches a boil. It has a height in the pot of 2-3/4”. The process took 1 hour and 13 minutes to boil dry. How much energy was required to do this?

In an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected electrons as a function of the frequency of radiation hitting a metal surface. She obtains the following plot (Figure 1). The point labeled "?0" corresponds to light with a wavelength of 523 nm.*the image wouldn't attach*

A). What is the value of ?0 in s?1?

B). What is the value of the work function of the metal in units of kJ/mol of ejected electrons?

C). Note that when the frequency of the light is greater than ?0, the plot shows a straight line with a nonzero slope. What is the slope of this line segment? Note that when the frequency of the light is greater than, the plot shows a straight line with a nonzero slope. What is the slope of this line segment?

A student conducts an experiment boiling water in a 3.96L pot. The Diameter of the base of the pot is 7-3/4” and the height is 5-1/8”.

2 Liters of water @ 23°C takes 11 minutes to boil. 500mL of water at 23°C are added to the boiling water. Producing 3-1/4” height of water and 88°C mixture temperature. It then takes till 11:29 for the water mixture to resume boiling. The whole operation takes 1 hour and 26 minutes from start to the pot boiled dry. How much energy was required for this process?

8. An experiment is conducted to compare the effects of weathering on paint of three different types. To do so, identical surfaces are coated with some paint of each type that has been exposed to four different environments. Measurements of the degree of deterioration we made for each surface. The data set is uploaded to Moodle. What can you say about the different paint types and different environments and their effects on the paint degradation?

   Deterioration	Paint Type	Environment
   9.42	A	1
   9.14	A	1
   10.82	A	2
   11.82	A	2
   8.51	A	3
   7.4	A	3
   10.08	A	4
   10.11	A	4
   11.37	B	1
   12.43	B	1
   13.56	B	2
   11.31	B	2
   11.14	B	3
   10.55	B	3
   14.7	B	4
   14.35	B	4
   9.85	C	1
   11.84	C	1
   12.13	C	2
   11.34	C	2
   10.09	C	3
   9.03	C	3
   10.87	C	4
   12.7	C	4

   I am trying to do this in Excel but the "Anova: two-factor with replication" test won't work and I can't figure out what I'm doing wrong. I keep getting an error that says "Anova: Two-Factor With Replication - Each sample must contain the same number of rows." Some explanation and help would be greatly appreciated. Thanks.

In a double-slit experiment, if the slit separation is increased by a factor of two, what happens to the interference pattern shown on the screen? What happens if the wavelength is halved? What happens if the distance to the screen is double?

Two small forward-facing speakers are 2.50 m apart. They are both emitting, in phase with each other, a sound of frequency 1100 Hz in a room where the speed of sound is 344 m/s. A woman is standing opposite the midpoint between the speakers and is initially 35.0 m from the midpoint. As she slowly walks parallel to the line connecting the speakers, at what angle ? (relative to the centerline coming outward from the midpoint between the speakers) will she first hear no sound?

A factorial experiment was designed to test for any significant differences in the time needed to perform English to foreign language translations with two computerized language translators. Because the type of language translated was also considered a significant factor, translations were made with both systems for three different languages: Spanish, French, and German. Use the following data for translation time in hours.

Test for any significant differences due to language translator system (Factor A), type of language (Factor B), and interaction. Use a=.05

Complete the following ANOVA table (to 2 decimals, if necessary). Round your p-value to 4 decimal places.

During the experiment of shell and tube heat exchanger by using this equipment the Source of the water was from the water tap that is mean it is open feed water

To explain more:    the lab engineer used a drink water that supply it from the water tap directly to the heat exchanger equipment

And then he discharge the water to the sink that is not correct way ? I do not have a scientific answer in this but what i think the water from tap is not laminer and the temperature

is not fixed . so I need a real explanation in mechanical and chemical engineering about this

CAN you explain why the way of supplying water like this to the equipment is not good ?

and what the engineer used ?

which type of liquid shall he used ? And why and how it will improve

think about salt in the normal water as well as the bacteria, Think about fouling factor , cleaning heat exchanger regularly,