Increasing the aperture on a camera
A. reduces the depth of field and requires a longer exposure time.
B. reduces the depth of field and requires a shorter exposure time.
C. increases the depth of field and requires a longer exposure time.
D. increases the depth of field and requires a shorter exposure time.
B. reduces the depth of field and requires a shorter exposure time.
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The orbits of halo stars are typically circular and have a low inclination with respect to the disk
Indicate whether the statement is true or false
The solar constant for Earth is
A) 0.7 kW/m2. B) 1.0 kW/m2. C) 1.4 kW/m2. D) more than 1.4 kW/m2.
Except for the lightest nuclei, the average binding energy per nucleon is about
A) 12 MeV. B) 4 MeV. C) 6 MeV. D) 10 MeV. E) 8 MeV.
When a neutron decays to create a proton, another particle emitted is a(n)
a. alpha particle b. beta particle c. gamma ray d. x ray e. none of the above