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The block shown in Figure has mass m = 7.0 kg and lies on a fixed smooth frictionless plane tilted at an angle θ= 22.0o to the horizontal.
(a) Determine the acceleration of the block as it slides down the plane.
(b) if the block starts from rest 12.0 in up the plane from its base, what will be the block's speed when it reaches the bottom of the incline?
A hollow metal sphere has inner radius a, outer radius b, and conductivity sigma. Evaluate the electric field strength at the inner surface of a copper sphere if 0.70cm and 28A
The of is accompanied by a ray of measured wavelength 2.48×10?2. What is the difference in energy between these two levels
A thin uniform rod (length = 10.0 cm, mass = 250 g) is pivoted about a horizontal frictionless pin through one end of the rod
The temperature of the surface of a certain star is 7500 K. Most hydrogen atoms at surface of the star are in the electronic ground state. What is the approximate fraction of hydrogen atoms that are in the first excited state (and therefore could ..
a woman throws a ball at a vertical wall d 6.8 m away. the ball is h 3.4 m above ground when it leaves the womans
questiona 67.0 kg person holds out his arms so that his hands are 1.70 m apart. normally a persons hand makes up about
Air bags are designed to deploy in 10 ms. Estimate the acceleration of the front surface of the bags as it expands. Express your answer in terms of the acceleration of gravity g
A mode-locked, titanium-sapphire laser has a wavelength of 850 nm and produces 100 million pulses of light each second. What is the average power produced by the laser
A simple model of the Earth includes a dense spherical core of radius 4200 km and a less dense spherical shell of thickness 2180 km, determine the rotational kinetic energy of Earth
A battery charger is connected to a dead battery and delivers a current of 7.4 A for 5.3 hours, keeping the voltage across the battery terminals at 12 V in the process. How much energy is delivered to the battery?
A pipe filled with natural gas [methane (CH4)] is punctured by a line of small holes 1.00 cm apart down its entire 2.2-m length. What frequency is being played in this picture
A skier moving at 4.60m/s encounters a long, rough horizontal patch of snow having coefficient of kinetic friction 0.220 with her skis. How far does she travel on this patch before stopping?
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