chris

You purchase a rectangular piece of metal that has dimensions 10.0mm x 20.0 mm x 30.0 mm and mass 4.32×10^-2 . The seller tells youthat the metal is gold. To check this, you compute the averagedensity of the piece.

What value do you get?

Example: A piece of unknown metal" with right rectangular prism shape has a width of 3.2 cm, a length of 17.1 cm and height of 4.0 cm Its mass is 1.5 kg. Calculate the density ot the metal in g/cm³.

A horse travels 10 km in 30 minutes. Which one of the following is true regarding the average speed of the horse? (Multiple answers can be correct)

A.       0.33

B.       0.33 km/min

C.      20 km/hr

D.     all of the above

A herd of 31 horses has 8 white and some black horses. What is the ratio of black horses to white horses?

1. The 9th term of an arithmetic sequence is 59 and the 13th is 87. What is the initial term of this sequence

A polyamide was prepared by bulk polymerization of hexamethyl diamine (9.22 g and molecular weight 116) and adipic acid (13.2 g and molecular weight ...  

Question 7 (1 point)                

ANOVA is more appropriate when testing more than two groups because multiple t test may [increase / decrease] the risk of Type I error

  Question 7 options:

Increase

Decrease

Question 8 (2 points)                

What type of data is appropriate for using ANOVA?

  Question 8 options:

Nominal

Ordinal

Interval

Question 9 (1 point)                

ANOVA is testing whether or not the variance ________ group variation is the same as ________ group variation.

  Question 9 options:

sought in / known

within / between

provided to / seen in

What is the IUPAC name of CH3CH2CH(OH)CH2CH2CH3

Antibodies and antigens (details)

Draw molecular orbital of methyl anion

EXPLAIN YOUR ANSWER

Please show how you get the answer

7. San Diego State has a student population of 33,527. The University of Texas has 17,786 more students than San Diego State. UCLA has 8,074 less students than Texas. What is the total population of UCLA? Draw a tape diagram to model.

A solution of 0.150 mole fraction of glucose and 0.850 mole fraction of water. What's the molality?

Complete the equation describing how x and y are related.

       y = ___          x = ___

A 4m long beam is subjected to force and moment loadings. Replace the loading with an equivalent force couple system at end A of beam.

7. What is the final velocity of a 0.152 kg t-ball that has a force of 10 N applied for 0.18 seconds starting from rest? 

Problem 2. Four 1 -in.-diameter pegs are attached to a board as shown. Two strings are passed around the pegs and pulled with the forces indicated.

(a) Determine the resultant couple acting on the board.

(b) If only one string is used, around which pegs should it pass and in what directions should it be pulled to create the same couple with the minimum tension in the string?

A physics major is cooking breakfast when she notices that the frictional force between her steel spatula and teflon frying pan is only 0.200 N. Knowing the coefficient of kinetic friction between the two materials, she quickly calculated the normal force. What is it? 

Draw the energy level diagrams for P, F, Ca,Se.

The density of octane is 0.703 g/mL. What mass (in g) will a 0.8128 gallon sample of octane have?