Coronae are large round ice caps on Mars
Indicate whether the statement is true or false
False
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A dispersion-strengthened cutting tool will be made of a 80 vol % commercial purity nickel matrix and 20 vol % synthetic diamond. Nickel has an elastic modulus, given in Table 6.1, of 200 GPa and a tensile fracture strength of 400 MPa, and synthetic diamond has an elastic modulus of 900 GPa and a tensile fracture strength of 1000 MPa. Estimate the tensile strength and elastic modulus of this alloy.
What will be an ideal response?
A 4-mol ideal gas system undergoes an adiabatic process where it expands and does 28 J of work on its environment. How much heat is received by the system?
a. -20 J c. +28 J b. zero d. +7 J
An atomic nucleus has a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the center of the nucleus?
(k = 1/4??0 = 8.99 × 109 N ? m2/C2, e = 1.60 × 10-19 C) A) 5.4 × 10-8 N/C B) 5.6 × 10-8 N/C C) 5.8 × 10-8 N/C D) 6.0 × 10-8 N/C E) 6.2 × 10-8 N/C
During a hockey game, a puck is given an initial speed of 10 m/s. It slides 50 m on the horizontal ice before it stops due to friction. What is the coefficient of kinetic friction between the puck and the ice?
A) 0.090 B) 0.10 C) 0.11 D) 0.12