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How many days are there in 12 lunar months (sidereal months)? How many days is the Moon in
(a) the waxing phase and
(b) the waning phase?
If the Moon rises at 6 P.M. on a particular day, about what time will it rise 3 days later?
A small girl and boy take a sled up to the top of a snow covered slope which is inclined 30 degrees above the horizontal, How fast are they going at the bottom
A rock is projected from the edge of the top of the building with an initial velocity of 12.2 m/s at an angle of 53 degrees above the horizontal. The rock strikes the ground a horizontal distance of 25m from the base of the building. Assume that t..
A converging lens (f 1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 =−28.0 cm). An object is placed to the left of the converging lens, and the final image produced with the two-lens combination lies22.2 cm to the left of the ..
this question relates directly to the vorperian and kent 2007 article vowel acoustic space development in children a
What friction torque is necessary to reduce its angular speed from 90.0 {rm rpm} to 45.0 {rm rpm} in a time interval of 32.0 {rm s}.
A converging lens with a focal length of 5.0cm is to the left of a second identical lens. When a feather is placed 13cm to the left of the first lens, What is the separation between the lenses
What is the momentum of the system? Determine the speed and mass of the second particle emerging from the collision.
A current-carrying wire of length 50cm is positioned perpendicular to a uniform magnetic field. If the current is 10.0A and it is decided that there is a resultant force of 3.0 N in the wire due to the interaction of the current and field, what is t..
Write an equation for calculating horizontal range for any initial speed, cannon angle, and elevation difference between target and cannon. Explain how you arrived at your equation. What basic physics principles did you apply?
A metal ball of mass 0.66 kg with initial temperature of 30oC is dropped in to a container of 1.08 kg of water at 20oC. If the final temperature is 20.4 oC, what is the specific heat of the metal to the nearest tenth of aJ/kg·K?
When a converging lens is utilized in a camera (as in the first drawing), the film should be placed at a distance of 0.250 m from the lens to record an image of an object that is 3.90 m from the lens.
A 10.0 kgblock is dragged over a rough, horizontal surface by a 84.0 N force acting at 20.0° above thehorizontal. The block is displaced 6.00 m, Find the work done on the block by the normal force
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