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Two skiers, one of mass m and the other 2m, start at the top of a mountain. The more daring skier (2m) takes the double black diamond trail to arrive at the bottom more quickly, while the other skier meanders back and forth on a green beginner trail. Assuming the total frictional losses for each skier are equal on the way down, how do the skier's speeds compare at the bottom of the hill.
The two stars in a binary star system have masses 1.9 x 10^30kg and 6.1 x 10^30kg. What is the speed of the heaviest star
A 3.70g bullet moving at 250m/s enters and stops in an initially stationary 3.50kg wooden block on a horizontal frictionless surface, How much work was done in stopping the bullet
A copper plate has a circular hole with a diameter of 1.000 cm. In order to drop a pyrex glass marble 1.0031 cm in diameter through the hole in the plate, how much must the temperature of the system be raised
John's mass on the Earth is 65 kg. What are his metric mass and weight on Mars where g=3.72m/s^2
A 2.80 kg gold bar at 98 degrees celcius is dropped into 0.34 kg of water at 23 degree celcius. what is the final temperature? assume the specific heatof gold is 129 J/kg
A solid cylinder of mass 10 kg is pivoted about a frictionlessaxis through the center O. What is the angular acceleration of the cylinder
What is the change in Marys potential energy. Find the final speed of the particle.
The average distance of the planet Mercury from the sun is 0.39 times the average distance of the earth from the sun
Nichrome wire of cross-sectional radius 0.754 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
The systems shown below are in equilibrium with m = 6.10 kg and θ = 35.0°. If the spring scales are calibrated in newtons, what do they read? Ignore the masses of the pulleys and strings and assume the pulleys and the incline are frictionless.
The acceleration of a particle is given by ax(t)=? 2.10m/s2 +( 3.03m/s3 )t, What will be the velocity at time t = 3.94s
If a compressive force of 3.2×104N is exerted on the end of a 18cm long bone of cross-sectional area 4.3cm2 , will the bone break, By how much does it shorten
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