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An adult dolphin weighs around 1660 N. How fast must he be moving as he leaves the water vertically in order to jump to a height of 1.70 m? Ignore air resistance.
The figure below shows five long parallel wires in the xy plane. All wire carries a current i = 6.00 A in the positive x direction. The separation among adjacent wires is d = 7.95 cm. What is the net magnetic force on one meter of each wire, due to t..
A 128-cm-long pipe is stopped at one end. Near the open end, there is a loudspeaker that is driven by an audio oscillator, What is the lowest frequency of the oscillator that will produce resonance within the tube
A large wheel is coupled to a wheel with half the diameter. How does the rotational speed of the smaller wheel compare with that of larger wheel? How do the tangential speeds at the rims compare (assuming the belt doesn't slip).
A system comprises of two billiard balls having the same mass (2 kg each)that roll toward each other moving at the same speed (1m/s). What is the total momentum of the system?
The atomic planes in a crysral are spaced d = 0.50 nm apart. These planes are used in a diffraction experiment with X-rays with ? = 0.05 nm. What are the diffraction angles for the first three bright fringes
a rocket is moving through empty space in a straight line with constant speed. it is far from gravitational effect of
A string attached to an oscillator at one end forms 5 nodes (counting the two ends) and produces a frequency of ? = 1.5 kHz. What is the linear density of the string
The Mariana Trench is 36,198 ft deep. What is the gauge pressure in psf at this depth? What is the gauge pressure in psi at this depth?
You are playing tetherball with a friend and hit the ball so that it begins to travel in a circular horizontal path. find the tension force that the rope exerts on the ball just after you hit it
Calculate the moment of the inertia of the stick with respect to an axis perpendicular to it and going through its center of mass
an airplane is cruising at an altitude of 10 km. the pressure outside the craft is 0.311 atm within the passenger
a metal sign for a car dealership is a thin uniform right triangle with base length b and height h. the sign has mass
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