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A solid sphere is released from rest and allowed to roll down aboard that has one end resting on the floor and is tiltedat 39° with respect to the horizontal. If the sphere is released from a heightof 69 cm above the floor, what is the sphere's speed when it reaches the lowest end of the board?
An airplane is making a turn with a given radius in a circle. The lift force (given) is exerted perpendicular to the wings. What is the angle that the wings make with the horizontal
A 480g , 8.00-cm-diameter solid cylinder rolls across the floor at 1.50m/s. What is the can's kinetic energy
1. two radio antennas separated by d 300 m simultaneously broadcast identical signals at the same wavelength. a car
The current in a solenoid with 21 turns per centimeter is 0.45A, Find the magnitude of the net magnetic field a radial distance of 0.70 cm from the straight wire.
A lab uses a beam of electrons to probe the structure ofprotons and neutrons held in a target vessel. How many electrons strike the target each second
if your body has a density of 967 kg/m^3, What fration of you will be submerged when in salt water? the density of salt water is 1025 kg/m^3
Find the magnitude of book's velocity, just before the book reaches the floor. Find the direction of book's velocity
A spherical planet is discovered by astronomers orbiting a star which has the same mass as our Sun. The orbital period of the planet is 2.55 Earth years, How far from the star (in AU) does the planet orbit
An alpha particle (q = 2e and m = 6.64e-27 kg) is accelerated from rest through a potential difference of 1.2e+5 volts. Find the speed of the particle after being accelerated
1. a baseball is hit from 1 m above the ground and attains a maximum height of 21 m and horizontal distance of 100 m. a
a 35.0 cm diameter coil consists of 30 turns of circular copper wire 2.0 mm in diameter. a uniform magnetic field
A long, thin rod (length = 4 m) lies along the x axis, withits midpoint at the origin. In a vacuum, a +8 microC pointcharge is fixed to one end of the rod, find the magnitude of the net torque applied to the rod
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