The magnetic field at a certain distance from a wire carrying 2-A current is 4 ?T. What will be the magnetic field if the current in the wire is doubled?
A) 2 ?T
B) 4 ?T
C) 6 ?T
D) 8 ?T
E) 10 ?T
D
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For a blend of long-chain molecules, if the enthalpy of mixing is positive, it is expected that the polymers should mix in the liquid at all temperatures above the melting temperature. _____________
Fill in the blank(s) with the appropriate word(s).
Radiation Activity: What mass of 14C, with a half-life of 5730 y, do you need to provide a decay rate of 280.0 Bq? The mass of 14C is 14.00 u, and 1 u = 1.6605 × 10-27 kg.
A. 1.70 × 10-12 kg B. 5.38 × 10-19 kg C. 3.84 × 10-20 kg D. 8.68 × 10-13 kg
The most important climatic factors that affect the rate of chemical weathering are heat and ______________
Fill in the blank(s) with correct word
Imagine we have a planet identical to Jupiter around another star, with the exception that its orbit is much closer. How would its size compare to Jupiter?
A) it would be the same size B) it would be larger C) it would be much smaller D) it would be slightly smaller