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An ice skater has a moment of inertia of 2.9 kg•m2 when his arms are outstretched and a moment of inertia of 1.0 kg•m2 when his arms are tucked in close to his chest. If he starts to spin at an angular speed of 1.7 rps with his arms outstretched, determine what will his angular speed be when they are tucked in?
a calculate the rms speed of a carbon dioxide molecule at 25degc.b determine how many times per second it would move
Find the current that flows if the same potential difference. A 63 kg trampoline artist jumps vertically upward from the top of a platform with the speed of 4.8 m/s. If the trampoline behaves like a spring of spring constant 6.2×10^4 N/m, how far ..
A toy train is pushed forward and released at x0=2.0 m with a speed of 2.0 m/s. What is the magnitude of the train's acceleration after its wheel begins to stick
A projectile fired from a gun has initial horizontal and vertical components of velocity equal to 30 m/s and 40 m/s, respectively. What is the speed of the projectile when it is at the highest point in its trajectory_________. What is the accelerati..
a positron is a particle with the same mass and magnitude charge as an electron but a positron has a positive charge.
An old-style TV set places 25 kV across two plates of a parallel plate capacitor. An electron is released very close to one plate, compute the speed of the electron when it exits the hole
Suppose a certain large fish starts out at a depth where the absolute pressure is 2.1 atm and with gas bladder volume 5.0 × 10-4 m3. What is the absolute pressure at that new depth
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/39 s. If the operator then brings it to a stop in 3.3 min, what is the angular acceleration of the Ferris wheel
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of ?3.20 m/s2 by reducing the throttle. (a) How long does it take the boat to reach the buoy? (b)What is the velocit..
Sisyphus was a character in Greek mythology that was doomed in Hades to push a boulder to the top of a steep mountain. When he reached the top, the boulder would slide back down the mountain and he would have to start all over again.
An elevator passenger is on her way down to the ground floor. Her mass is 50 kg, What are the rate and direction of her acceleration
a soccer player kicks the ball toward a goal that is 27.0 m in front of him. the ball leaves his foot at a speed of
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