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One naturally occuring reaction in a radioactive decay process is nitrogen-12 (atomic number 7) decaying into carbon-12 (atomic number 6) plus an unknown particle. What is the atomic mass of this unknown particle?
Suppose the effective separation of the sources of interfering 19.4 keV electrons was 6 µm and the effective distance from these sources to the photographic.
At time t = 0 s, a wheel has an angular displacement of zero radians and an angular velocity of +15 ras/s. The wheel has a constant acceleration of -0.45 rad/s2. In this situation, the maximum value of the angular displacement, in rad, is closest to:
A spherical balloon of volume 3.94 103 cm3 contains helium at a pressure of 1.15 105 Pa. How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 10-22 J?
The top panel simulation displays a visualization of a star and its planets looking down onto the plane of the solar system. The habitable zone is displayed for the particular star being simulated. One can click and drag either toward the star or awa..
a solid metal sphere of radius 3.00 m carries a total charge of -3.00 microc. what is the magnitude of the electric
5.0kg of water at 32?C is mixed with 5.0kg of water at 52?C in a well-insulated container. Estimate the net change in entropy of the system
Two forces act on a 1.6 kg box. One of the forces is known to be Fvec = 4.7ihatbold N. The acceleration is measured to be avec = (-1.9 ihatbold - 2.8 jhatbold) m/s2. Find the second force in unit-vector notation
if the radius of the equipotential surface of point charge is 13.5 m at a potential of 2.10 kv what is the magnitude of
a rock is thrown from edge of a cliff to 23.5 meters below, initial velocity 12.5 m/s directed at 44.5 degrees above horizontal. how long does it take for the rock to reach the ground
An observer, whose eyes are 1.77 m above the ground, is standing 28.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with treetop makes an angle of 22.0° above the horizontal. How..
A parallel plate capacitor has a capacitance of 8.5 μFwhen filled with a dielectric. The area of each plate is 1.5m2 and the separation between the plates is 1.4 x10-5 m.
Light from a helium-neon laser (λ = 632.8 nm) is incident on a single slit. What is the maximum width for which no diffraction minima are observed? (Hint: Values of sin θ > 1 are not possible.)
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