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When exposed to the weakest sound it can hear, the ear's energy ofvibration is about 10-19J. If the force constant of theear is 20N/m, what is the amplitude of vibration of the eardrum? How does this compare to the size of an atom(~5 x10-10m)?
One method for determining the amount of corn in early Native American diets is the stable isotope ratio analysis (SIRA) technique. What is the diameter of the semicircle
blocks are lined up in a row on a frictionless table. How much force does the 8.0 block exert on the 7 block.
A nurse measures the temperature of a patient to be 39.3°C. What is this temperature on the Fahrenheit scale
A 1100 kg car is moving at a speed of 40.0 m/s. How much work is required to bring the car to rest
A particular motor can provide a maximum of 110.0 N • m of torque. Assuming that all of this torque is used to accelerate a solid, What angle will it rotate through to do this
A disk is reputed to accelerate from 0 to 389 RPM in 3.5 seconds. How many radians does it turn through.
A clamped mechanical device (such as a metal ruler) oscillates in vacuum at a frequency (assume there is no damping in this case) of 10.0 Hz. Find the characteristic decay time for the damped motion
A 0.449 kg ice puck, moving east with a speed of 2.91 m/s, has the head-on collision with a 0.846 kg puck initially at rest. Assume a perfectly elastic collision, what will be the speed and direction of each object after the collision.
For distance objects, the angular size in degrees can be appropriate as 57deg (w/d), What is the angular size of the headlights on a car 15km away if the headlight are 1.2 m apart
A ball of mass m falls from height h,to height hf near the surface of the Earth, as shown at right. When the ball passes it has a speed vf. Ignore air resistance, and assume that any changes in kinetic energy of the Earth are negligible.
A projectile is launched from ground level to the top of a cliff which is 195m away and 155 m high, find the initial velocity of the projectile
A machine is designed to perform a given amount of work in a given amount of time. Find the power of the second machine
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