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Calculate the distance that the person needs to walk to get back to their start point and the direction that they need to take.
A child of mass 20 kg is standing on a plank inclined at 20 degrees to the horizontal. How much force does the child exert normally (perpendicularly) against the plank?
The remaining stress components are all zero. For this state of stress, determine the sum of the normal strains x, y and z directions: that is, determine the madnitude of e1+e2+e3.
Evaluate the maximum possible efficiency. Actual efficiencies of less than 3% can be achieved. Determine the thermal efficiency of the system based on the ammonia Rankine system and for a 100 MW pla
The rest exits through a diameter of 1.5 m with a pressure of 0.7 bar and a quality of 90%. Determine the velocity at each exit duct, in m/s.
On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about 1.2 103 W/m2. What is the electromagnetic energy contained in 5.6 m3 of space just above the earth's su
How much should Mr. Jones put in the bank today to cover the maintenance of the car for the five years? Assume that the bank gives 8% interest, compounded annually.
Assuming that the speeding vehicle is approaching the police car essentially head-on, determine the speed of the vehicle.
Derive the equation of motion of the simple pendulum (consisting of a point mass m, attached to a rigid wall by a string of length L) using the energy method.
Determine his velocity and acceleration when he reaches B. this is a motor cycle going down an arc from pt a to pt b. rho is 300ft, and the angle from a to b is 60 degrees.
The time it takes for sound waves to travel at 343 m/s through the air between the astronauts equals the time it takes for the electromagnetic waves to travel to the earth. How far away from the ear
Using a value of 2.9979 108 m/s for the speed of light, determine the difference between the two frequencies used in the operation of a cell phone. ______Hz.
Find the time it took for his voice to reach the earth via radio waves. s (b) Someday a person will walk on Mars, which is 5.6 1010 m from the earth at the point of closest approach.
The dry bulb temperature of the air in a 4m by 3m underground opening is 26 °C. The corresponding moisture content is 0.015 kg/kg dry air. Estimate the effective radiant heat transfer coefficie
The power output of the turbine is 2.5 MW. neglecting changes in the kinetic energy of steam, determine the mass flow rate of the steam, in Kg/s.
Show that total true strain is the sum of the true strains in each step; in other words, the true strains are additive. Show that, in the case of engineering strains, the strains cannot be added to
The velocity of the air stream decreases from 230 m/s to 30 m/s as it passes through the diffuser. Find the following: Calculate the inlet area of the diffuser.
Determine the boundary work per unit mass during the process (KJ) Calculate the pressure of helium at the final state (KPa) Calculate the amount of heat transfer during the process (KJ).
Determine the minimum distance d at which the brakes must be applied to avoid a collision under the following circumstances. a) The train consists of just a 195,000 kg locomotive.
(a) What is the approximate ductility (%El) of a brass alloy that has a yield strength of 275 MPa? what is the Tensile strength?
Determine the impulse of the golf club on the ball. Neglect the impulse caused by the ball's weight while the club is striking the ball.
The turbine exhausts to atmospheric pressure. if both the compressor and turbine are 75% efficient, compute the net power output in Btu/hr. account for variable specific heat.
What are the generating functions in your design? What is the resolution of the design? What are the trial conditions? How would you run your experiment? How would you analyze the data? Justify your
For a product at an AQL of 2.5% and lot size of 5000 using MIL standard 105E, what is the probability of going to tightened inspection if the incoming lot is 1% defective?
For a 3 sigma control chart, what is the probability of four successive points plotting outside 2 sigma limits? If such a case happens what would it imply?