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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 uniform rod rotates in a horizontal plane about a vertical axis through one end. The rod is 7.63 m long, weighs 11.1 N, and rotates at 275 rev/min.find its rotational inertia about the axis of rotation
Your toaster has a power cord with a resistance of 2.2×10?2 connected in series with a 9.9 nichrome heating element. How much power is dissipated in the heating element
How much energy is required to accelerate a spaceship with a rest mass of 112 metric tons to a speed of 0.445 c? Every day our Earth receives 1.55×1022 J energy from the Sun. If we were able to use 1.05 percent of this energy to accelerate spaceships..
A skateboarder, starting from rest, rolls down a 13.9-m ramp. When she arrives at the bottom of the ramp her speed is 8.68 m/s. Decide the magnitude of her acceleration, assumed to be constant. If the ramp is inclined at 26.8 ° with respect to the gr..
You are in charge of measuring the coefficient of restitution for a new alloy of steel. What is the coefficient of restitution
An object accelerates from 19 m/s to 50 m/s in 15 seconds. What is the objects acceleration in m/s2
A 4.60 g charcoal sample from anancient fire pit has a 14C activity of 63.0disintegrations/min. How old is the charcoal sample
A certain kind of glass has an index of refraction of 1.640 for blue light of wavelength 430 nm and an index of 1.595 for red light of wavelength 680 nm. what is the angle between the two beams inside the glass
A man starts from a position 310m north of his car and walks for 2.7 min in a westward direction at a constant velocity of 10km/h. How far is he from his car when he stops
A 6.00 kg ball is dropped from a height of 11.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg, How high will the other ball go after the collision
A square, single-turn wire loop 1.00 cm on a side is placedinside a solenoid that has a circular cross section of radius 3.00cm. find the magnitude of the average induced emf in the loop
a calorimeter of negligible mass contains 1100 g of water at 303 k and 41 g of ice at 273 k. find the final temperature
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