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Two skiers, Annie and Jack, start skiing from rest at different points on a hill at the same time. Jack, with a mass 78.9 kg, skis from the top of the hill down a steeper section with an angle of inclination of 35.0o. Annie, with mass 68.9 kg, starts from a lower point and skis a less steep section, with an angle of inclination of 20.0o. The length of the steeper section is 100 m. Determine the acceleration of the combined center of mass for Annie and Jack before Jack reaches the less steep section.
ax=ay=
a 2.0 kg bicycle wheel with radius of 0.30 m turns at a constant angular speed of 25 rads when a 0.30 kg reflector is
A drop of water on a countertop reflects light from a flower held3.30 cm directly above it. What is the focal length of the water drop
You are at the controls of a particle accelerator, sending a beam of 3.60×10^7 m/s protons (mass ) at a gas target of an unknown element. Find the mass of one nucleus of the unknown element
question a 6.00 kg bowling ball is rolling at 9.00 ms. it collides with a 1.50 kg bowling pin at rest. after the
Two point charges are placed along a horizontal axis with the following values and positions: +3.0μC at x=0 cm and-7.0μC at x= 20 cm. At what point along the axis is the electric field zero?
A box with a mass of 8 kg is lifted (without acceleration) through a height of 9 m, in order to place it upon the shelf of the closet.
A long straight horizontal wire carries a current I = 2.40Ato the left. What is the magnitude F of the magnitude force on the charge
The index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), whereas its index of refraction is 1.530 at a wavelength of 410 nm (violet). what is the angle of refraction for each wavelength
Two electrons in the same atom both have n = 4 and script i = 2. How many quantum numbers are there for the possible states of the atom? How many states would be possible if the exclusion principle did not apply to the atom?
What temperature would the wing be 8 cm (0.08 m) shorter?
A horizontal force of 5.0 N accelerates a 4.0 kg mass, from rest, What friction force acts on the mass
In an open RC circut, the total resistance is 15Kohms and the battery emf is 24 and constant is measured to be 35 microsecond calculate (a) the total capacitance of the circuit
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