Iron is classified as a(n) ______________.
Fill in the blank(s) with the appropriate word(s).
metal
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A 46.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 225 N. For the first 11.0 m the floor is frictionless, and for the next 10.0 m the coefficient of friction is 0.20. What is the final speed of the crate after being pulled these 21.0 m?
What will be an ideal response?
When water boils, its temperature __________
Fill in the blank(s) with correct word
If an atom's atomic number is given by Z, its atomic mass by A, and its neutron number by N, which of the following is correct?
A) N = A + Z B) N = Z - A C) N = A - Z D) N = 2A + Z E) N = A + 2Z
The magnetic field of an electromagnetic wave has a peak value of 5.0 × 10-10 T. What is the intensity of the wave?
A) 1.0 × 10-13 W/m2 B) 1.5 × 10-5 W/m2 C) 3.0 × 10-5 W/m2 D) 2.0 × 10-13 W/m2 E) 7.5 × 105 W/m2