You look at yourself in a plane mirror. If you move away from the mirror and look at yourself again, you now see more of yourself
a. True
b. False
Indicate whether the statement is true or false
False
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The most important climatic factors that affect the rate of chemical weathering are heat and ______________
Fill in the blank(s) with correct word
A torsion pendulum consists of a uniform rod hanging horizontally from thin wire tied to its center
When the wire is twisted through an angle ?, the wire exerts a torque ? = -??, where ? = 0.0016 Nm/rad. The rod has a mass of 35 grams and is 10 cm long. What is the period of the torsional oscillations of the pendulum? A) 0.85 s B) 1.4 s C) 0.99 s D) 2.1 s E) 0.023 s
A satellite circles planet Roton every 2.8 h in an orbit having a radius of 1.2 × 10^7 m. If the radius of Roton is 5.0 × 10^6 m, what is the magnitude of the free-fall acceleration on the surface of Roton?
a. 31 m/s2 b. 27 m/s2 c. 34 m/s2 d. 40 m/s2 e. 19 m/s2
Characteristic x-rays can be produced by bombarding targets with electrons. These x-rays occur when
a. electrons from higher shells fill the vacant lower shell b. electrons fill the vacant valence shell c. photons are emitted with energies on the order of 103 eV d. photons are emitted with wavelengths on the order of 103 nm