Suppose you have the 8.25 μF capacitor of a heart defibrillator at a potential difference of 13.5 × 104 V. C = 8.25 μF V = 13.5 × 104 V a) What is the energy stored in it in J? b) Find the amount of stored charge in mC.

Describe an experiment, either at the molecular/cellular level or at the physiological level to gain knowledge on the impact the biotic pathogen Phytaphthora infestans has on potato plants. Please explain methodology and what can be learned from the experiment.

What organic compounds were produced in the Miller-Urey experiment? How did the design of the experiment support the hypothesis that organic compounds are likely to have arisen from abiotic materials present in the atmosphere of early Earth?

In Caribbean seagrass meadows manatee grass Syringodium filiforme appears before turtle grass Thalassia testudinum. (a) Describe the design of an experiment to determine the mechanism of this successional sequence. (b) Give the statistical null hypothesis for this experiment.

explain how scientists were able to suggest a molecule associated with heredity using strains of pneumonia-causing bacteria. In your explanation include, one control experiment and at least one experiment as proof of such a hereditary molecule.

Java Data Structures (Stack and Recursion)

Using the CODE provided BELOW (WITHOUT IMPORTING any classes from Java Library) modify the classes and add the following methods to the code provided below.

1. Add a recursive method hmTimes() to the CODE BELOW that states how many times a particular value appears on the stack.

2. Add a recursive method insertE() to the CODE BELOW that allows insert a value at the end of the stack.

3. Add a recursive method popLast() to the CODE BELOW that allows removal of the last node from the stack.

4. Add a recursive method hmNodes() to CODE BELOW that states how many nodes does the stack have.

Prove that every method works, MULTIPLE TIMES, in the MAIN StackWithLinkedList2.

CODE:

class Node {

  int value;

  Node nextNode;

  Node(int v, Node n)

  {

    value = v;

nextNode = n;

  }

  Node (int v)

  {

     this(v,null);

  }

}

class Stack {

  protected Node top;

  Stack()

  {

    top = null;

  }

  boolean isEmpty()

  {

    return( top == null);

  }

  void push(int v)

  {

    Node tempPointer;

    tempPointer = new Node(v);

tempPointer.nextNode = top;

top = tempPointer;

  }

  int pop()

  {

    int tempValue;

tempValue = top.value;

top = top.nextNode;

return tempValue;

  }   

  void printStack()

  {

    Node aPointer = top;

String tempString = "";

while (aPointer != null)

{

tempString = tempString + aPointer.value + "\n";

aPointer = aPointer.nextNode;

}

System.out.println(tempString);

  }

  boolean hasValue(int v)

  {

    if (top.value == v)

{

return true;

}

else

{

return hasValueSubList(top,v);

}

  }

  boolean hasValueSubList(Node ptr, int v)

  {

    if (ptr.nextNode == null)

{

return false;

}

else if (ptr.nextNode.value == v)

{

return true;

}

else

{

return hasValueSubList(ptr.nextNode,v);

}

  }

}

public class StackWithLinkedList2{

  public static void main(String[] args){

    int popValue;

    Stack myStack = new Stack();

myStack.push(5);

myStack.push(7);

myStack.push(9);

    System.out.println(myStack.hasValue(11));

  }

}

A researcher is concerned that the true

population mean could be as much as 4.8 greater

than the accepted population mean, but the

researchers hypothesis test fails to find a

significant difference. The power for this study

was 0.5, the researcher probably should

A) accept the outcome and move on

B) repeat the experiment with a smaller α

C) repeat the experiment with a larger α

D) repeat the experiment with a larger n

E) repeat the experiment and hope that the next sample

mean is significantly different than the hypothesized

mean.

Failing to observe a treatment affect

for Rogaine, when in reality Rogaine reduces

hair loss, would be...

A) impossible

B) an error with probability equal to α

C) an error with probability equal to β

D) an error with probability equal to 1-β

Experiment IV: Effect of pH on the Rate of Enzyme Reaction

6. In this experiment, was the enzyme denatured or just slowed down at any of the pH values tested? What is the evidence?

Materials for Experiment IV

Five test tubes

Test tube rack

Disposable pipettes

Potato extract

Deionized water

Water bath, 37 degrees Celsius (°C)

0.1 molar (M) sodium hydroxide (NaOH)

0.1 M hydrochloric acid (HCl)

pH paper

Procedure for Experiment IV

Five test tubes were taken and labeled A to E.

According to table 7.4, drops of 0.1 M hydrochloric acid (HCI), 0.1 molar (M) sodium hydroxide (NaOH), and deionized water were added to five test tubes.

Table 7.4

The pH for each of the five test tubes using pH paper was recorded.

Later, 2 mL deionized water, eight drops of catechol, and eight drops of the potato extract were added into all five test tubes.

Each test tube was carefully mixed and placed into a 37 °C water bath.

After 15 minutes, a change of color was supposed to happen and had to be rated on a scale of 1–10 with 10 being the darkest.

The data was recorded in Table 4 of the Enzyme Lab Worksheet and presented to the class.