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An isotope has a half-life of 11.91 days. What is its decay constant in units of s-1?
a performer seated on a trapeze is swinging back and forth with a period of 8.85 s. if she stands up thus raising the
A 2900 kg truck traveling north at41 km/h turns east and accelerates to 56 km/h. What is the change in the truck's kineticenergy? What is the magnitude of the change in the linear momentum ofthe truck?
In the Bohr model of hydrogen, the electron moves in a circular orbit around the nucleus. Determine the angular speed of the electron
A mail bag with a mass of 124 kgis suspended by a vertical rope 8.0 mlong. How much work is done by the worker in moving the bag to thisposition
You heat a 545 cm^3 sample of a substance from 121 celcius to 285 celcius and find that its volume increases by 2.29 cm^3. obtain the coefficient of volume expansion of this substance
A pendulum consists of a mass m = 0.120 kg hangingfrom a flexible string of length L. Find the oscillation frequency of the pendulum
A baseball pitcher pivots his extended arm about his shoulder joint, applying a constant torque of 197 N · m for 0.24 s to his arm, Find his arm's angular acceleration and final angular velocity
The position of a particle moving along the x axis is given in cm by x = 8.25 + 2.50t^3, where t is in seconds. Consider the time interval t = 2.00 sec to t = 3.00 sec. Find the instantaneous velocity at t = 2.00sec
a reflecting telescope has a radius of curvature of 2.8 m for its objective mirror and a radius of curvature of -1.5 m
What is the speed of a beam of pions if their average lifetime is measured to be 4.40 x 10-8 s? At rest, their lifetime is 2.60 x 10-8 s
A cook puts 9.20 g of water in a 2.00-L pressure cooker that is then warmed to 470°C. What is the pressure inside the container
Two solid blocks of identical size are submerged in water. One block is aluminum and the other is lead. Upon find which is the buoyant force greater
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