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Suppose you could pack neutrons (mass = 1.67 × 10-27 kg) inside a small ball of radius 0.026 m in the same way as neutrons and protons are packed together in the nucleus of an atom.
(a) Approximately how many neutrons would fit inside the ball?
(b) A small object is placed 1.6 m from the center of the neutron-packed ball, and the ball exerts a gravitational force on it. When the object is released, what is the magnitude of the acceleration that it experiences? Ignore the gravitational force exerted on the object by the earth.
A rocket traveling at 0.540c sets out for the star, which is 5.45ly away from earth. It will return to earth immediately after reaching the star. According to the rocket crew how far will the rocket travel
A wire segment of length 4.75 cm carries a 3.46 A current. This wire is placed within a uniform magnetic field. find the angle between the two orientations of the wire
In coming to a stop, a car leaves skid marks 76 m long on the highway. Assuming a deceleration of 6.50 m/s2, estimate the speed of the car just before braking. Express in m/s.
The energy of the first excited state of a hydrogen atom is -0.34 eV ± 0.0003 eV. What is the average lifetime of for this state
After 3.1 ms has elapsed, how much charge remains on the 3.00-µF capacitor, What is the current in the resistor at this time
When responding to sound, the human eardrum vibrates about its equilibrium position. What is the frequency (in Hz) of the eardrum's vibrations
During the launch from a board, a diver's angular speed about her center of mass changes from zero to 4.50 rad/s in 220 ms. FIND the magnitudes of her average angular acceleration
Two wires, each 28.15 cm long, are connected to two separate 9.00 V batteries as shown in the figure. The resistance of the first wire is 5.00 Ω, and that of other wire is unknown (R). If the separation between the wires is 4.55 mm, what value of R w..
The length of a moving spaceship is 29.4 m according to an astronaut on the spaceship. compute the speed of the spaceship
A stretched cord has a fundamental frequency of 144 Hz, a length of .9 m, and a mass of 2 g. What is the tension on the cord
The mass of nitrogen molecule, N2, is 4x10^26 kg. What is its root mean square (rms) speed at 40 degrees Celsius
A fisherman reels in 12 of line while landing a fish, using the constant forward pull of 35. How much work does the tension in the line do on fish.
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