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1. A body weighing 10 kg is on a horizontal plane. the coefficient of static friction is 0.20.
(a) What horizontal force will start the body?
(b) If the coefficient of kinetic friction is 0.18, what force parallel to the horizontal will keep the body moving uniformly?
A traveler first drives 19.4 km east, then 29.7 km southeast, and finally 9.9 km south. Find the traveler's total displacement
he femur is a bone in the leg whose minimum cross-sectional area is about 3.1 x 10-4 m2. Find the maximum stress that this bone can withstand
A certain mass, when hung from a certainspring, causes the spring to stretch by an amount h compared to its equilibrium length. If the mass is displaced vertically from thisequilibrium, it will oscillate up and down with a period Tosc. Find the pe..
A dentist uses a mirror to examine a tooth that is 1.25 cm in front of the mirror. The image of the tooth is formed 5.0 cm behind the mirror. Determine the mirror's radius of curvature
An observation satellite orbits the planet at a height of 1000 . What is the projectile's speed as it passes the satellite?
a coil has an inductance of l=0.65mh and resistance of r=0.75 ohms . it is connected to the terminals of a battery with a emf of 1.5V, find the final steady-state or equilibrium current
Phil Mickelson launches a gold ball from the tee with a speed of 45.0 m/s at 35 degrees above the horizontal. calculate the horizontal distance to the green
A conducting wire is quadrupled in length and tripled in diameter. By what factor does its resistance change
Light of wavelength 568.0 nm is incident on a narrow slit. The diffraction pattern is viewed on a screen 62.5 cm from the slit. What is the width of the slit
In a uniform circular motion the a) acceleration is parallel to the velocity b)acceleration is vertical while the velocity can be in any direction c) acceleration is always vertical and the velocity is horizontal d) acceleration is perpendicular to t..
When 5.30* 10^5 J of heat is added to a gas enclosed cylinder fitted with a light frictionless piston maintained at atmospheric pressure, estimate the work done by the gas
A 52.6-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -2.29 m/s. Her hands are in contact with the wall for 1.26 s. Ignore friction and wind resistance.
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