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A certain toaster has a heating element made of Nichrome resistance wire. When the toaster is first connected to a 100 V source of potential difference (and the wire is at a temperature of 20.0°C), the initial current is 1.9 A. However, the current begins to decrease as the resistive element warms up. When the toaster reaches its final operating temperature, the current has dropped to 1.53 A. (a) Find the power the toaster converts when it is at its operating temperature. . W (b) What is the final temperature of the heating element?
A girl whirls a stone in a horizontal circle of radius 1 m at a height of 1.5 m above the ground. Find period of revolution
Blood is pumped from the heart at a rate of 5 L/min into the aorta (of radius 1.01 cm). Determine the speed of blood through the aorta
Starting 4.0m from a department store mirror, How far is Suzanne from her image in the mirror after 1.0s
Determine out the magnitude of the average force that the water exerts on the diver. This force is neoconservative.
An ideal gas expands at a constant pressure of 2.1 atm from 457 mL to 713 mL. Heat then flows out of the gas, at constant volume, What is the total heat flow into the gas
An electron collides elastically with a hydrogen atom that is initially at rest. Assume all the motion occurs along a straight line. What fraction of the electron's initial kinetic energy is transferred to the atom? (Take the mass of the hydrogen ato..
In a physics lab, light with a wavelength of 560nm travels in air from a laser to a photocell in a time of 16.9ns, What is the wavelength of the light in the glass
Calculate the frequency and period of a pendulum of mass 10 kg and a) length .5 meters, b) length 5 meters.
A new fabric is made to help athletes stay cool. It has a conductivity constant of 94.465 J/(s m K). what is the power of the materials thermal conductivity
find the resistance of the following. power ratings are based on the assumption of a potential difference of 120 v rms
The green block(B) has a mass of 10.00kg and is moving to the left at a speed of 3.70m/s. What should the velocity of the red block be in order to have the two blocks move to the right with a speed of 1.30 after the collision
A large fraction of the ultraviolet (UV) radiation coming from the sun is absorbed by the atmosphere. The main UV absorber in our atmosphere is ozone, O 3 rm O_3. In particular, ozone absorbs radiation with frequencies around 9.38×1014Hz rm Hz..
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