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The blackbody radiation emitted from a furnace peaks at a wavelength of 2.7 10-6 m(0.0000027 m). What is the temperature inside the furnace?
While an object near the earth's surface is in free fall, its. Vector A points north and vector B points east. If C =B - A, then vector C points:
A rifle of mass 10 kg fires a 10 g bullet into a 3 kg block of woodwhich is suspended by a thin wire, forming a ballistic pendulum.The bullet remains embedded in the block of wood, which is observedto swing so that it reaches a vertical height of ..
A 4mC charge passes through the point (3m, 4m) at a speed of 100m/s. Find the components of the magnetic force felt by the charge
When a 2.50-kg object is hung vertically on a certain light spring descrbied by Hooke's law, the spring stretches 2.76 cm. What is the force constant of the spring
A uniform 1.9-kg rod that is 0.78 m long is suspended at rest from the ceiling by two springs, one at each end. Find the angle that the rod makes with the horizontal
The air inside a hot air balloon has an average temperature of 92.7 degree C. The outside air has a temperature of 23.7 degree C. What is the ratio of the density of air in the balloon to the density of air in the surrounding atmosphere?
A 54kg ice skater moving at 6.4m/s glides to a stop. Assumingthe ice is at 0deg C and that 50% of the heat generated by frictionis absorbed by the ice, how much ice melts
Three identical resistors with resistances of 6.0W are connected to a batter with an emf of 18.0V and zero internal resistance. Find the equivalent resistance of the resistor network. Find the current in each resistor
You bike at 11.1 m/s directly away from your neighbor\'s trumpet sound, What frequency is the trombonist producing
The transducer is chosen to measure a nominal pressure of 500 cm H2O. The ambient temperature is expected to vary between 18° and 25°C during tests. Estimate the magnitude of each elemental error affecting the measured pressure
A spherical asteroid with radius of 17.3 km has uniform density 3500 kg/m^3. Find the gravitational acceleration at the asteroid's surface
q1. a cord passes over a weightless and frictionless pulley. masses of 220 g and 389 g are attached to the ends of the
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