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An atomic nucleus initially moving at 420 m/s emits an alpha particle in the direction of its velocity and the remaining nucleus slows to 350 m/s. If the alpha particle has a mass of 4.0 u and the original nucleus has a mass of 222 u, find what speed does the alpha particle have when it is emitted?
Two small metallic spheres, each of mass m = 0.198 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.4 nC, and they come to equilibrium when each string is ..
A 8.76 kg particle with velocity is at x = 3.94 m, y = 9.40 m. It is pulled by a 8.65 N force in the negative x direction. find the rate at which the angular momentum is changing
In a circus performance, a monkey is strapped to a sled andboth are given an initial speed of 3.0m/s up a 18.0° inclined track. How far up the incline do the monkey and sled move
A hydrogen atom is in its first excited state (n = 2). Using the Bohr theory of the atom, calculate (a) the radius of the orbit, (b) the linear momentum of the electron.
a 1.0m long 1.0 mm diameter copper wire carries a current of 50.0 a to the east. suppose we create a magnetic field
A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle. What vertical height does the puck reach above its starting point
An 8.70-kg block slides with an initial speed of 1.56m/s up a ramp inclined at an angle of 27.4 degrees with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.62. Use energy conservation to find the distance the ..
Using a 677-nm wavelength laser, you form the diffraction pattern of a 0.113-mm wide slit on a screen. How far is the screen located from the slit
a 0.02 kg lead bullet traveling 200 m/s strikes an armor plate and comes to a stop. If all of its energy is converted to heat that it absorbs, what is the temperature change
When a potential difference of 221 V is applied to two plates of a parallel-plate capacitor, the inner surface of the positive plate carries a surface charge density of 40 nC/cm2. What is the spacing between the plates
On a roller coaster ride the total mass of the cart - with passengers included - is 290 kg. PeakK is at 44.5 m above the ground, peakL is at 28.0 m. The speed of the cart atK is 19.0 m/s, at L it is 12.6m/s.
a series of pulses each of amplitude0.150m are sent down a string that is attached to a post at one end. the pulses are
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