A polymer blend will be 75 % PVC and 25 % vol fraction LDPE, to provide additional ductility to the PVC. Estimate the elastic modulus, tensile strength, and elongation to failure of the proposed blend if the LDPE and PVC have the following properties:
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A cart is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.4 m/s2 . What is the magnitude of the cart's displacement during the first 5.0 s of its motion?
a. 35 m b. 85 m c. 55 m d. 11 m e. 17 m
Dark energy is the term used to describe ____
a. the pressure inflating "voids" in the distribution of galaxies b. radiation from antimatter and non-baryonic matter c. a component of the cosmic microwave background radiation d. an effect that works with gravity to decelerate the expansion of the Universe e. an effect that works against gravity to accelerate the expansion of the Universe
A man's face is 30 cm in front of a concave spherical shaving mirror. If the image is erect and 1.5 times as large as his face, what is the radius of curvature of the mirror?
A) 40 cm B) 60 cm C) 100 cm D) 140 cm E) 180 cm
The weak magnetic field of Europa may originate from a rapidly rotating liquid iron core
Indicate whether the statement is true or false