Which of the following parameters will dictate whether a particular solar eclipse appears as a total or an annular eclipse to an observer?
What will be an ideal response?
the distance of the Moon from Earth at the time of eclipse
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In a RLC circuit, the values of the inductance and capacitance are both halved. In comparison with the resonance frequency of the original circuit, the new resonant frequency will be
A) the same as before. B) reduced to one-half the original value. C) reduced to one-quarter the original value. D) increased by a factor of two. E) increased by a factor of four.
If Earth had a pair of identical moons on opposite sides of the same circular orbit, the center of gravity of the double-moon-Earth system would be
A) inside the Earth, but off center. B) at the center of the Earth. C) outside the Earth, but within the orbital path of the moons. D) outside the Earth, but beyond the orbital path of the moons.
The upward force exerted by a fluid on an object immersed in it is called the buoyant pressure
a. True b. False Indicate whether the statement is true or false
Two projectiles are fired at equal speeds but different angles. One is fired at an angle of 30° and the other at 60°. With no air resistance, the projectile to hit the ground first will be the one fired at
A) 30°. B) 60°. C) both hit at the same time