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A concave makeup mirror is designed so that a person 22 cm in front of it sees an upright image magnified by a factor of two. What is the radius of curvature of the mirror?
R = m
A bowling ball has a mass of 6.2 kg and a radius of 18 cm. If it is rolling down a lane with a speed of 8.6 m/s, what is the angular momentum of the ball
A parachutist leaves a stationary plane and free falls for 50.0 meters (ignore air resistance for the free fall). At what height did she leave the plane
A current of 0.300 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heart beat, how many conduction electrons pass through your heart
A rope with 270g of mass per meter is under 600N tension. A wave with frequency 4.0Hz and amplitude 6.1cm is propagating on the rope. What is the average power carried by the wave?
Two submarines are underwater and approaching each other head-on. Sub A has a speed of 17 m/s and sub B has a speed of 8 m/s. What is the frequency of the sound detected by sub B
Imagine that the coefficient of kinetic friction between a certain 15kg box and the floor is 0.35. How hard would you have to push on it to move it at the constant speed of 2.6m/s across the floor.
A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 14.9 rad/s. What is the angular speed of the wheel at the higher temperature
two parallel infinite sheets carry positive unifrom surface charge densities sigma and 3 sigma. what is the magnetude of electrci field between the sheets
A solenoid 110 cm long and 2.40 cm in diameter carries a current of 16 A. Find the length of wire forming the solenoid
A rocket is launched at an angle of 57.0° above the horizontal with an initial speed of 99 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 30.0 m/s2. At this time, its engines fail and the rocket proceeds ..
A thin spherical shell rolls down an incline without slipping. If the linear acceleration of the center of mass of the shell is 0.30g, what is the angle the incline makes with the horizontal?
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time". If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 60.0 degrees above the ground, illustrate what is the "hang time"?
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