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Two ice skaters, with masses of 40.0kg and 85.0kg , are at the center of a 60.0m -diameter circular rink. The skaters push off against each other and glide to opposite edges of the rink.
If the heavier skater reaches the edge in 40.0s , how long does the lighter skater take to reach the edge?
The owner of a van installs a rear-window lens that has a focal length of -0.340 m. When the owner looks out through the lens at an object located directly behind the van, How far from the van is the object actually located
A particle with a positive charge q= 8.6x10^-6C and a mass m= 0.45g moves with velocity v = 8m/s parallel to a wall. Find the sign and magnitude of the magnetic field
A near-sighted person might correct his vision by wearing diverging lenses with focal length f = -45cm, Use ray tracing to determine the location of the image
What is the physics behind everyday sayings
A cannon is fired from the ground. The cannonball initially travels with a speed of 300 m/s at an angel of 25 degrees with respect to the ground, What is the cannonballs maximum height
A 1110 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960 N crate hangs from far end of beam.
A rock is thrown off a bridge of height 75m. at an angle theta=25 degrees with respect to the horizontal. The initial speed of the rock is 15 m/s. compute the maximum height reached by the rock?
a girl of mass 40 kg is in a rocket ship an altidude of 35 km above the surface of the earth. Find the gravitational force on the girl by the earth
An RL circuit with L = 3 H and an RC circuit with C = 5 µF have the same time constant, What is this common time constant
A blacksmith heats a 1.9 kg iron horseshoe to 480 degree C, then plunges it into a bucket containing 10kg of water at 20 degree C. The specific heat of iron is 447 J/kgK. What is the final temperature.
City lies directly west of city . When there is no wind, an airliner makes the 6130 round-trip flight between the two cities in 6.50 of flying time while traveling at the same speed in both directions. How fast is the wind blowing
The sodium D line is a doublet consisting of two wavelengths, 588.995 and 589.592 nm. Calculate the angular separation between these two lines in the first-order spectrum for a grating with 4000 lines per centimeter. Repeat for the second order.
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