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The drawing shows a skateboarder moving at 5.4 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at its end, which is 0.48 m above the ground. When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track.
A device used in radiation therapy for cancer contains 0.83 g of cobalt-60 (59.933 819 u). The half-life of this isotope is 5.27 yr
our little sister builds 2 tree houses and stretches a rope between them for sending messages to other tree house. She hangs a mass of 1.4kg on one end of the rope that passes over the pulley.
a woman started a new job as an assistant to a jeweler. her boss just received a very heavy necklace whose owner claims
An object of mass m = 2.3 g and charge Q = +48 µC is attached to a string and placed in a uniform electric field that is inclined at an angle of 30.0° with the horizontal. Find the magnitude of the electric field
A long, straight wire carrying a current of 316 A is placed in a uniform magnetic field that has a magnitude of 7.42 × 10-3 T. Find a point in space where the net magnetic field is zero
A solid cylinder with a mass of 1.5 Kg initially at rest rolls down from a height of 2.00 m. What will be its speed when it reaches the bottom
A jet flying at 128 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, Calculate the magnitude of the necessary lifting force
the temperature of a body is increased from -173 c to 357 c. what is the ratio of energies emitted by the body per
Two gerbils run in place with a linear speed of 0.55 on an exercise wheel that is shaped like a hoop. Find the angular momentum of the system
the index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), what is the angle of refraction for each wavelength
A sled of mass m is given a kick on a frozen pond. The kick imparts to it an initial speed of vi = 2.50 m/s. Use energy considerations to find the distance the sled moves before it stops
capacitors wont hold a charge indefinitely as time goes on charge gradually migrates from the positive to the negative
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