1. Conduct research about why molecular-level structure is important in the functioning of designed materials. You should research at least two examples. Then communicate this scientific and technical information using written text and graphics. (5 points) A) What is the difference between bonding forces holding compounds together and other attractive forces? What types of chemical bonding and intermolecular forces do the materials have? B) Predict the general properties of your materials based on the types of bonds they have. Properties include melting point, boiling point, and conductivity. C) Analyze your materials' specific physical and chemical properties. Properties include color, density, viscosity, buoyancy, boiling point, freezing point, conductivity, and reactivity. D) Designed materials need to meet certain requirements. When designing new products, why is it important to study the properties of the materials?

Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?