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An iron rod has a length of 70m when the temperature is 30°C. By how much will it expand when the temperature rises to 40°C (Linear expansion of iron rod = 1.2×10^-5 per kelvin)
A stone is thrown horizontally at 20 m/s from the top of a cliff 63 m high. How fast is it moving the instant before it hits the ground?
Considering the observed IMF and strength of those forces, complete the following questions with your best predictions.
1) Rank the following molecules from lowest to highest boiling point: H2, Br2, and F2. Explain your prediction based on IMF.
2) Predict which of the following has the highest boiling point: HF or HBr. Explain your prediction based on IMF.
3) Consider water, H2O. Predict how water’s boiling point compares to HBr and HF? Explain your prediction based on IMF.
4) Look up the boiling points of H2, H2O, Br2, F2, HBr, and HF. Were your predictions correct? Explain.
Slider crank mechanism as shown in the figure calculate the
i) Acceleration of the slider B
ii) Acceleration of the point E
iii) Angular acceleration of the link AB
OA rotates at (30+X) rad/s in counter clockwise direction
On the 3rd quarter examination in Statistics, the population mean was 70 and the population standard deviation was 9. Determine the standard score of a student who got a score of 88 assuming that the scores are normally distributed.
On the 3rd quarter examination in Statistics, the population mean was 70 and the population standard deviation was 9. Determine the standard score of a student who got a score of 88 assuming that the scores are normally distributed.
A solution prepared by adding 10g of an unknown non-volatile, non-electrolyte solute to 150 g of water. The Boiling point of the solution is elevated by 0.433 0C above the normal boiling point of the solvent. What is the molar mass of the unknown substance?
Suppose 100ml of a 0.2 M ZnCl2 solution is mixed with 300ml of 0.1 KNO3. What is the pH?
Create a java program that generates elements (randomly from 10 – 75) of a 2-dimensional array
(5x5) using the Random Class then perform the following:
1) Output the array elements
2) Output the sum of prime numbers in the array
3) Output the elements in the main diagonal.
4) Output the sum of the elements below the diagonal.
5) Output the sum of the elements above the diagonal.
6) Output the odd numbers below the diagonal.
7) Output the even numbers above the diagonal.
Write a Python program that retrieves values a, b, and c from the user,
calculates and prints the roots of a quadratic equation for any given values of a, b and c.
