A very wide embankment with height of 3m and the soil unit weight 19 kn/m3 to be constructed. Calculate the normal stress, water pressure and effective stress at two positions: At the middle of clay, the depth = 5 m and the saturated unit weight = 27 kn/m3, and at the middle of sand, the depth = 5 and the saturated unit weight = 21 kn/m3.
For two cases
- Before constructing embankment
-Instantly after constructing the embankment
In: Civil Engineering
A government wishes to borrow £1 million. It issues a one-year bond at a price of £950,000 at a fixed rate of interest of 5%. Suppose in investors become concerned about a possible default, causing the bond price to fall to £930,000.
In: Economics
Two 2.3 kg bodies, A and B, collide. The velocities before the collision are v → A = ( 34 i ̂ + 29 j ̂ ) m/s and v → B = ( 19 i ̂ + 1.6 j ̂ ) m/s . After the collision, v → A ′ = ( 4.0 i ̂ + 12 j ̂ ) m/s . What are (a) the x-component and (b) the y-component of the final velocity of B? (c) What is the change in the total kinetic energy (including sign)?
In: Physics
After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 50.0 m horizontally from the end of the ramp. His velocity, just before landing, is 24.0 m/s and points in a direction 34.1 ° below the horizontal. Neglecting air resistance and any lift that he experiences while airborne, find (a) the magnitude and (b) the direction of his initial velocity when he left the end of the ramp.
In: Physics
In: Computer Science
Given a string str of even length, print out the first half.
Methods to use: substring(), length()
Testing cases:
WooHoo => Woo
HelloThere => Hello
abcdef => abc
ab => a
0123456789 => 01234
kitten => kit
(Note that the sample input test cases are shown before the “=>” and the expected output each test case is after the “=>”.
Your program should print out the expected output only, not the input.)
In: Computer Science
In: Operations Management
Suppose GDP is $12 trillion, taxes are $3.6 trillion, private saving is $1.5 trillion, and public saving is $0.8 trillion.
Assuming the economy is closed, complete the following table by calculating consumption, government purchases, national saving, and investment.
| Component | amount(trillions of dollars) |
| consumption | |
| government purchases | |
| national savings | |
| investment |
In: Economics
An R-C circuit with R = 100 ohm and C = 3 mF is connected to a 90 V source of emf. At t = 0 the switch is closed and the capacitor begins to charge.
a) How much energy (in J) is stored in the capacitor at t = 0.7 s?
b) What is the largest amount of energy that can be store in the capacitor?
In: Physics
Consider the following scenario. You grab a box of cereal from your pantry, and you carry it over to your table. When you get there, you change your mind and return the box of cereal to its original spot. Is this a reversible process if the closed system is your house/apartment? Explain your answer
In: Physics