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You are a blackbody with a temperature 98.6 degrees F.
(a) What is the total energy density of the radiation you emit?
(b) How many photons are emitted by you each second?
(c) What fraction of the energy emitted by you is in the interval 7-14 um (micrometers) where thermal imaging cameras operate?
a metal block of mass 1.230 kg is hanging from a string. the tension in the string is 7.184 n. the block is submerged
a piston of mass 4.53kg is travelling in a tube with a velocity of 15.24ms. it engages a spring of stiffness 350 ncm
Suppose you form a dipole from two point charges (with a magnitude of charge, q). the postive charge is located at the point x=y=0, z=d/2. and the negative charge is located at x=y=0, z=-d/2.
A 0.1-kg object is traveling to the right (in the positive direction) with a speed of 3 m/s. find the magnitude of the impulse (in N-s) acting on the object
Two cylindrical glass beads each of mass m = 32 mg are set on their flat ends on a horizontal insulating surface separated by a distance d = 3 cm. The coefficient of static friction between the beads and the surface is μs = 0.3.
It is necessary to determine the specific heat of an unknown object. The mass of the object is 170.0 g. Find the specific heat of the object
Synchronous communications satellites are placed in a circular orbit that is 3.59 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance?
A guy looks into one side of a hubcap, he sees an inmageof his face 30.0 cm in back of it. what is the radius of curvature of the hubcap
A person walks 25.0 degrees north of east for 3.1 km. How far would another person walk due north and due east to arrive at the same location.
A circular wire loop whose radius is 15.0 cm carries current of 2.50 A. What torque acts on the loop
The pilot (mass m) of an aerobatic glider (an airplane with no engine) flies her aircraft in a loop (a vertical circle of radius R) so that her head always points toward the inside of the loop. What will the scale read at the lowest point of the lo..
A 3.4-cm-diameter parallel-plate capacitor has a 1.8mm spacing. The electric field strength inside the capacitor is 1.3×105V/m, What is the potential difference across the capacitor
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