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What is the net force acting on a 5-kg objest falling on
a) earth.
b) what is the mass of object on moon.
c) what is the net force on the moon.
A loudspeaker of mass 22 is suspended a distance of = 1.6 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.10.
A 740g, 40cm long rod is free to rotate about a frictionless axle at one end. What is the rod's angular velocity immediately after the blow
A car is traveling at 25 m/s when it runs off the road and hits a utility pole. What is the acceleration of the airbag
A 127-turn circular coil of radius 2.09 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Find the magnitude of the average EMF
What is the electric potential energy of a system that consists of two protons 2.0×10?15 apart-as might occur inside a typical nucleus?
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. How many electrons are there in 6.24 liters of water
In an X-ray tube electrons strike a tungsten target (W or "wolfram") after being accelerated through a potential difference V0. Estimate the minimum value of V0 required to observe the Kalpha peak.
Determine the magnitude of door's angular acceleration.
A parallel beam of light from a He-Ne laser, with wavelength of 644 nm, falls on two very narrow slits 0.05 mm apart. How far apart are the fringes in the center of the pattern on a screen 2.2m away.
The lowest pedal note on a particular large pipe organ has a fundamental frequency of 15.7 Hz. What is the length of pipe between the sounding hole and the open end
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0437 s, determine the vertical components of the launch velocity
A string under tension of 50.0 N is used to whirl a rock in a horizontal circle of radius 2.5 m at a speed of 20.4 m/s on a frictionless table. What is the breaking strength, in Newtons, of the string
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