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Explain what was surprising about the observations and important conslusions derived from blackbody radiation, the photoelectric effect, and the hydrogen spectrum.
The gravitational force exerted on a baseball is 2.11 N down. A pitcher throws the ball horizontally with velocity 15.0 m/s by uniformly accelerating it along a straight horizontal line for a time interval of 174 ms. The ball starts from rest.
Astronauts discover a planet orbiting another star. The mass of the star is 8.10 x 10^30 kg, what is the force exerted by the star on the planet
A vertical spring stretches 4.2 cm when a 14-g object is hung from it. The object is replaced with a block of mass 22 g that oscillates up and down in simple harmonic motion. Calculate the period of motion. ____s . Use the given information to find t..
An object has a kinetic energy of 277 J and a momentum of magnitude 26.9 kg·m/s. Find the speed and the mass of the object
A rock climber throws a small first aid kit to another climber who is higher up the mountain. FIND the vertical height difference between the two climbers
An archer pulls the bowstring back for a distance of 0.470 m before releasing the arrow. What is the elastic potential energy of the drawn bow
The orbit of earth's moon has a period of 27.3 days and a radius (semi-major axis) of 2.56 x 10-3 A.U. (= 3.84 x 105 km). What is the mass of Earth? What are the units? Show the work.
You use a spring (K=89N/m) to pull a 45kg box across the rough floor (μ=0.13). The spring stretches 3m. What is the horizontal acceleration of the box
What must be the magnitude of a uniform electric field if itis to have the same energy density as that possessed by a0.71 T magnetic field
A model thermodynamic system consists of N particles whose allowed energies are integer multiples of e: 0, e, 2e, 3e, 4e, Calculate the canonical partition function for the system
q1. express how unmet basic physiological needs of oxygen nutrition temperature and humidity threaten clients
A polonium nucleus, while at rest, decays into a lead nucleus of rest mass 342.1126 x 10^-27 kg, and emits a helium nucleus of rest mass 6.6483 x 10^-27 kg. Determine the rest mass of the Polonium nucleus
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