rishinitr2025

What is machine?

What is kinetic energy and how is it important in life?

Calculate the surface area of each pyramid with the following values. (P = perimeter, b = one side of the base, s=side, h=height). Number of sides is given in each problem.

1. P = 12 ft, s = 4 ft, b = 4 ft, h=2 ft, 3 sides (base is a triangle)

4. P = 45 yds, b = 15 yds, s=15, h=12, 3 sides (base is a triangle)

6. P = 15 ft, b = 5 ft, s=5 ft, h= 4, 3 sides (base is a triangle)

9. P = 45 yds, b = 15 yds, s=10, h=8, 3 sides (base is a triangle)

12. P = 45 ft, b = 15 ft, s=10, h=8, 3 sides (base is a triangle)

15. P = 27 yds, b = 9 yds, s=30, h=25, 3 sides (base is a triangle)

Let z = 2e^13πi/6.

Write z, z⁶, z⁴ and z^−2 in the form a + bi.

What is binary tree?

There is a string: cabcedeacadeddaaaba. Use Hoffman coding to draw the coding process and write the code of each character

A uniform bar of weight 30 N and length 4m passes over a prop and is supported in a horizontal position by a force of 10 N acting vertically upwards at the other end. Find the distance of the prop from the center of the bars.