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1) A small ball is attached to one end of a spring that has an unstrained length of 0.204 m. The spring is held by the other end, and the ball is whirled around in a horizontal circle at a speed of 2.97 m/s. The spring remains nearly parallel to the ground during the motion and is observed to stretch by 0.009 m. By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down, motionless? 2) When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an amplitude of 6.20 10-7 m and a maximum speed of 3.10 10-3 m/s.
(a) What is the frequency (in Hz) of the eardrum's vibration?
(b) What is the maximum acceleration of the eardrum?
A tree falls on a bicycle path 40 m ahead of a cyclist traveling at 16 m/s, how far from the fallen tree will she be when she stops
A 2 kg ball moving towards the West with a speed of 10m/s collides with a 4 kg ball moving towards the North with a speed of 3m/s. Find the velocity of the combination after collision
A mass of 1 kg is hung vertically from a spring stretching the spring .20 m. It is then pulled .10 m below its equilibrium position, find the time to make one complete cycle
A projectile is fired at time t = 0.0 s, from point 0 at edge of a cliff, with initial velocity components of vix=30m/s and viy = 100m/s. The projectile rises, and then falls into the sea at point P. The time of flight of the projectile is 20s.
A camera has a f=50 mm (f=5 cm) lens. A 1.0 mm (0.1cm) tall ant is 200 mm (20 cm) from the lens. Where should the film be placed
An airplane is flying in a horizontal circle at the speed of 542 km/h. If the wings of the plane are tilted 33.0° to the horizontal, what is the radius of the circle in that the plane is flying? Suppose that the required force is provided entirely by..
Two positive point charges, each of which has a charge of 4.3E-9 are located at y=+.10m and y+-.10m, What is the direction of this force
In a television set, electrons are accelerated from rest through a potential difference of 22 kV. Find the magnitude of the maximum magnetic force
what is the horizontal distance x to the base. find the average net force exerted on him in the barrel of the cannon.
What is the radius r of the iron ball?
Two metal spheres, each of mass 14 g and initially at rest, are dropped from a height of 6 m in an evacuated chamber. Find the difference in final speeds of the two spheres
Coherent light with wavelength 609 passes through two very narrow slits, and interference pattern is observed on a screen a distance of 3 from the slits.
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