Width * Length * Thickness * Density = Weight.
48″ * 96″ * . 1875″ * 0.284 lb/in3 = 245 lb.
Answer:
Two reasons that justify the requirement for security clearance for aerospace engineers working for government agencies are;
1) Such engineers have access to data regarding the blueprint, components, method of construction, functionality status, new systems design, future systems design, inventory of systems and aeronautical systems database which are sensitive information that are of high importance to the federal government
2) Such engineers take part in the testing of aeronautic equipment, and will require security clearance to be able to input data results into the data base of the aeronautic equipment
Explanation:
Answer:
This shows that the technological designs are similar to the scientific investigation processes.
Explanation:
Scientists carry out scientific investigations and discoveries. They learn from their environment by investigating the natural world. The scientist investigates by problem identification, research the related information, designing and conceptualizing, investigating and analyzing the results and deriving out conclusions.
Similarly the engineers follow the same step and provide solutions to the problems of the society through their products and technological designs. The engineers first identify the need of the product, design and implement the design to provide solution and then evaluate the solution. These are the similar steps that an engineer follow in a technological design of a product or a solution.
Answer:
ΔV = 
Explanation:
Distance of earth from sun = 
Spacecraft perihelion = 
gravitational parameters are now given as


radius of earth = 6378 Km
Heliocentric spacecraft velocity at earth sphere of influence =


Heliocentric velocity of earth = 

assume

Geometric spacecraft velocity of spacecraft at perigee of departure hyperbola

geometric space craft velocity in its circular parking orbit

ΔV = 
Complete Question
Lumber jacks use cranes and giant tongs to hoist their goods into trucks for transport. Fortunately, smaller versions of these devises are available for weekend warriors who want to play with their chain saws. Let us model the illustrated tongs as a planar mechanism that carries a log of weight 210 N. Given the following dimensions: 35 mm 10 mm 40 mm 230 mm 85 mm 45 mm 10 mm 35 mm 345 mm determine the force in N and moment in Nm that our worker exerts on the tongs. Also determine the pinching force magnitude in N that the tongs exert on the log; i.e. determine the horizontal force that the tong's teeth exert on the log. Assume the point E is centered between the tong's teeth.
The diagram for this question is shown on the first uploaded image
Answer:
The force P is
and the moment M is 
The horizontal force that the tong teeth exerts is 
Explanation:
First let denote the dimension to corresponding to the diagram

Next looking at the diagram let us consider the vertical direction
At equilibrium

This mean that

Since they are acting in opposite direction the equation becomes

=>
=> 
At Equilibrium Moment about F gives

=> 
=> 
=> 
=> 
Here
is the horizontal force that the tong teeth exerts
Now let consider the part BAF of the system as shown on the second uploaded image
Now the angle
is mathematically given as

=> 


Now at equilibrium the moment about A is

=> 


=> 
=> 
=> 
Looking at the forces acting on the teeth as shown on the third uploaded image
At Equilibrium the moment about D is

=> 
=> 
=> 
=> 