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An astronaut notices that a pendulum which took 2.45 {\rm s} for a complete cycle ofswing when the rocket was waiting on the launch pad takes1.26 {\rm s} for the same cycle of swingduring liftoff. What is the acceleration of the rocket? (Hint: Inside the rocket, it appears that g has increased.)
A spring (k = 1000 N/m) is used to launch objects across the floor. If the spring launches a 380 gram toy car with a speed of 17.6 m/s, how far was the spring compressed
question a balloon is rubbed with a wool glove. the two items attract one another with a force of strength 0.6 n when
The staples inside a stapler are kept in place by a springwith a relaxed length of 0.115 m. If the spring constant is 51.0N/m, how much elastic potential energy is stored in the spring
A small solid ball is released from rest while fully submerged in a liquid and then its kinetic energy is measured when it has moved 5 cm in the liquid. What is the volume of the ball
A converging (lens f=+12cm) in contact with a diverging lens gives a combined focal length of +36 cm, calculate the focal length of the diverging lens
What is the minimum photon energy needed to create an electron - positron pair when a photon collides (a) with a free electron at rest and (b) with a free proton at rest?
A parachutist with a camera, both descending at a speed of 11 m/s, releases that camera at an altitude of 140 m. Explain how long does it take the camera to reach the ground?
a positive charge 60 nc is 15 cm from a negative charge 50 nc. the force on one of these charges due to the other is
A uniform rod of mass M and length L is sitting on a frictionless table. Describe the subsequent motion of the rod
A baggage handler throws a 20kg suitcase along the floor of an airplane luggage compartment with a speed of 1.2 m/s. What is the suitcase's coefficient of kinetic friction on the floor
Two laser beams are simultaneously illuminating a diffraction grating. One laser has a wavelength of 632.8 nm. and the other has a wavelength of 637.8 nm. How many slits per millimeter are required to resolve the first order diffraction bright spots...
A satellite is in a circular orbit around the Earth at an altitude of 3.60 106 m. Find the acceleration of the satellite
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