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A black wood stove has a surface area of 1.10 m2 and a surface temperature of 138°C. What is the net rate at which heat is radiated into the room? The room temperature is 20.0°C. Stefan-Boltzmann constant is 5.670 × 10-8 W/(m2·K4).
question1suppose that for some process the cross section for absorption of a certain wavelength photon is 10-16 cm2 and
A man drags a 72.0 kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. The crate is tilted 26 degrees above the horizontal, and the strap is inclined 68 degrees above the horizontal. The center ..
What is the wavelength of the emitted photon, when the electron in the hydrogen atom makes a transition from the ni = 5 state to the nf = 2 state
The container is 12.0 m deep with a diameter of 1.8 m. What will the magnitude and direction of its acceleration be if it is released from rest
Water of mass 2.00 kg is heated when it is stirred with a paddle that exerts a constant force of 6.50 N on the water and moves during it at a speed of 1.80 m/s. How long will it take for the temperature of the water to increase by 1°C, if all the mec..
After flying for 15 minute in a wind blowing 42 km/h at an angle of 26 degree south of east, Find the speed of the airplane relative to the air
A nurse applies a force of 4.30 Newton to the piston of a syringe. The piston has an area of 5.47 x 10-5 m2. Find the pressure increase in the fluid within the syringe
In vacuum, two charged particles lie 2.5 cm apart. Find the magnitude and direction of the electric field at a point midway between the two particles. (One has a charge of -8.0 µC and the other has a charge of +4.0 µC.) Magnitude.
You are sitting behind a curtain watching meters that measure pressure, volume, and temperature of some kind of heat engine. Pressure, volume, and temperature have reached an equilibrium state.
An 18 g rifle bullet traveling 200 m/s buries itself in a 3.5 kg pendulum hanging on a 2.8 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum's displacement. vertical m hor..
Suppose that unpolarized light of intensity 144 W/m2 falls on the polarizer in the figure below, and the angle ? in the drawing is 28.5°
A 2.0 kg block is dropped from a height of 0.40 meter onto a spring of force constant k = 1960 N/m. Find the maximum distance the spring will be compressed
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