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In 1.12 minutes, a ski lift raises four skiers at constant speed to a height of 133 m. The average mass of each skier is 67.6 kg. What is the average power provided by the tension in the cable pulling the lift?
A 10.0- shell is traveling horizontally to the right at 25.0 relative to the ground when it explodes into two fragments, Find the magnitude of the velocity of the heavier fragment relative to the ground just after the explosion
A neutron star is the remnant left after certain supernovae (explosions of giant stars). What is a typical neutron star density
There are two answers required for this question. A rocket is fired straight up and accelerates upward at 12 m/s2 for 18 seconds. find the package's speed when it hits the ground
A child complains that her 160 g of milk is too hot at 90 degree C. She then pour 80 g of cold milk at 7 degree C in it. If the specific heat of milk is 3800 J/kg.K, what is the temperature of the mixture?
The magnetic force exerted on a 1.1-m segment of straight wire is 1.5 N. What is the angle between the wire and the magnetic field
Suppose that you have a 390 ?, a 780 ?, and a 2.20 k? resistor. What is the maximum resistance you can obtain by combining these
A 75?kg jogger runs with a speed of 4.2m/s, What is the jogger's de Broglie wavelength
A rotating wheel has a constant angular acceleration. It has an angular velocity of 5.0 rad/s at time t = 0 s, and 3.0 s later has an angular velocity of 9.0 rad/s. What is the angular displacement of the wheel during the 3.0-s interval?
Tritium (3H) decays by negative beta decay with a half-life of 12.16 years. Use an atomic weight. What is the mass in g of 1 mCi of tritium? 3.026 For 3H.To what nucleus does 3H decay.
A solid disk of mass m1 = 9.6 kg and radius R = 0.24 m is rotating with a constant angular velocity of ? = 30 rad/s. find the final rotational energy of the rod and disk system
A vertical force F is applied to a block of mass m that lies on a floor. what happens to the magnitude of normal force on the block from the floor as magnitude F is increased from zero if force F is downward?
The technique known as potassium-argon dating is used to date old lava flows. The potassium isotope 40K has a 1.28 billion year half-life, What is the age of the rock
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