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More blocks of the correct shape

Before leaving the discussion of the left panel in Image 3 , I will explain the behavior of four additional blocks that are of the correct shape forbeing dropped into the white boxes in the blocks in the rightmost panel. (The remaining blocks beyond those four deal with strings, which I will ignore for now.)

Random numbers

The block labeled pick random 1 to 10 lets you enter other values in place of 1 and 10. Then this block will deliver a random number withinthat range when it is called upon to do so. Random numbers are often used in game programs to simulate the throwing of dice or the spinning of a wheel of fortune.

The modulus

The block labeled mod will produce the modulus of two values when called upon to do so. The modulus of two numbers is the remainder thatresults from dividing one number by another number. You may remember the remainder from when you learned to do long division in elementary school butbefore you learned about decimals.

Various numeric representations

The block labeled sqrt will deliver about a dozen different representations of numeric values, depending on what is selected from thepull-down list. This includes the square root, trigonometric functions, absolute value, etc.

Rounding a number

Finally, the block labeled round will round a decimal number to the nearest whole number.

Drag and drop the plus and minus operators

Image 4 shows the result of dragging the top two green blocks from the Operators toolbox and dropping them into the white boxes in the bottom two orange variable blocks in the rightmost panel of Image 3 .

Image 4. result of dropping addition and subtraction operators into variable blocks.

Missing image.
Image 4. Result of dropping addition and subtraction operators into variable blocks.

A few more steps are required

If you compare Image 4 with Image 2 , you will see that Image 4 is close to what we need but we aren't quite there yet. In order to causethe bottom two blocks in the rightmost panel in Image 4 to match the bottom two blocks in Image 2 , we need to do the following:

  • Click the orange Data button in the upper left of Image 4 to expose the variables as shown in Image 1 .
  • Drag the blocks for the variables named LeftOperand and RightOperand from the Data toolbox and drop them into the white boxes in the bottom two blocks in Image 4 to make them match the bottom two blocks in Image 2 .

That's the solution. The upper left portion of your Stage area should now look similar to Image 5 . Note however that you may need to use the mouse to arrange the four variables and the button to get your Stage arrangedlike Image 5 .

Image 5. stage area of the finished program.

Missing image.
Image 5. Stage area of the finished program.

Operation of the program

Once you reach this point, you can click the green flag to initialize all four variables to zero.

Then you can move the sliders back and forth to manually set the values for the variables named LeftOperand and RightOperand .

If you click immediately to the right or left of the thumb on a slider, that will cause the thumb to move a small distance in that direction.

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
what is titration
John Reply
what is physics
Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Jude Reply
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
David Reply
what is viscosity?
David
what is inorganic
emma Reply
what is chemistry
Youesf Reply
what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
Sahid Reply
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what's motion
Maurice Reply
what are the types of wave
Maurice
answer
Magreth
progressive wave
Magreth
hello friend how are you
Muhammad Reply
fine, how about you?
Mohammed
hi
Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo Reply
Who can show me the full solution in this problem?
Reofrir Reply
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Source:  OpenStax, Teaching beginners to code. OpenStax CNX. May 27, 2013 Download for free at http://cnx.org/content/col11498/1.20
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