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Suppose you have 10 helium-filled party balloons tied to a digital camera, so you can take photos of the core of a storm. With 10 balloons the camera will slowly but surely rise. As a storm approaches the atmospheric pressure drops. Assuming the air temperature and density are the same, the volume of each balloon will increase. When you let go, the speed of ascent will be _____________.
A charge of 3.50 µC is held fixed at the origin. A second charge of 3.50 µC is released from rest at the position (1.25 m, 0.570 m). find its speed when it moves infinitely far from the origin
A force is applied to a cord wrapped around a solid 2.0-kg cylinderwhich has a 15cm radius. what is the force of friction acting on the cylinder
A spring stretches 4.1 cm when a 11 g mass is hung from it. If a total mass of 25 g attached to this spring oscillates in simple harmonic motion,how to calculate the period of motion.
The eyepiece of a compound microscope has a focal length of 2.70 centimeter, and the objective lens has f = 0.740 centimeter. Find the distance between the lenses when the microscope is adjusted for a relaxed eye
A 2.0 kg block is pushed against a horizontal spring and released. The spring sends the block sliding across a tabletop. find the distance to which the spring was initially compressed
A car traveling on a flat (unbanked) circular track accelerates uniformly from rest with a tangential acceleration of 1.90 m/s2. Find coefficient of static friction between car and track from these data
The length of a simple pendulum is 0.70 m and the mass of the particle (the "bob") at the end of the cable is 0.24 kg. What is the angular frequency of the motion
If you submerge an 8kg log in water and it displaces 10kg ofwater, what will be the net force on the log be the moment you letgo of the log
Multiple-Concept Example 13 presents useful background for this problem. determine the average power developed by the cheetah
Why does the addition of impurities to a conductor increase its resistivity, whereas the addition of impurities to a semiconductor generally decreases its resistivity?
a 1.8 kg ball is dropped from the roof of a building 100 m high. while the ball is falling to earth a horizontal wind
A Pendulum consists of a 1.0 kilogram mass swinging from a 10 meter long rope. Find what the tension in the rope
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