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A 40 figure skater is spinning on the toes of her skates at 0.60 . Her arms are outstretched as far as they will go. In this orientation, the skater can be modeled as a cylindrical torso (35 , 20 average diameter, 160 tall) plus two rod-like arms (2.5 each, 65 long) attached to the outside of the torso. The skater then raises her arms straight above her head, where she appears to be a 45 , 20--diameter, 200--tall cylinder.
A 3.30-g copper coin at 21.0°C drops 45.0 m to the ground. (Assume the specific heat of copper is 387 J/kg · °C.) determine the coin's final temperature
A rocket ship is 80m in length when measured before leaving the launching pad. what would its velocity be if a ground observer measured its length as 60m while it is in flight
What would the velocity be at the bottom of the ramp if there was a frictional force of 5.00 N in the opposite direction of the cubes path
Two identical springs (neglect their masses) are used to "play catch" with a small block of mass 110g, Determine the spring constant of the two springs
A block of mass m = 0.2 kg, in simple harmonic motion, has an amplitude of 3.5 cm and a maximum speed of 70 cm/s. What is the potential energy of the system when the block is 2 cm away from the equilibrium position?
An eagle is flying horizontally at a speed of 3.00 m/s when the fish in her talons wiggles loose and falls into the lake 5.00 m, Calculate the velocity of the fish relative to the water when it hits the water
A 1.5-cm tall object is placed 0.50 m to the left of a diverging lens with a focal length of 0.20 m. What is the location of the final image with respect to the object
a heat engine takes in 1000J of energy from a hot reservoir and expels 750J of energy to the cold reservoir in each cycle find the efficiency of the heat engine
A 0.015 kg record with a radius of 15 cm rotates with an angular speed of 33(1/3) rpm. Find the angular momentum of the record
If an organ pipe, 2 ft long and with one end closed and one end open, how long is the second organ pipe
A total Charge of 0.696uC is distributed uniformly throughout an entire region, giving a charge per volume of 348uC/m3. A Gaussian surface encloses 0.174uC of that charge. What is the volume of that entire region?
One recent study has shown that x rays with a wavelength of 0.0050 nm can produce significant numbers of mutations in human cells. Calculate the energy in eV of a photon of radiation with this wavelength.
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