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A certain toaster has a heating element made of Nichrome resistance wire. When the toaster is first connected to a 120 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.
(b) What is the final temperature of the heating element?
Waves on a 10 meter rope travel at 20 m/s. You shake the rope back and forth until you get a standing wave with a single antinode. find the wavelength and frequency of each standing wave
An unknown capacitance C is in series with a 3.0uF capacitor. This pair is in parallel with a 1.0uF capacitor, Make a circuit diagram for this Network
A woman stands at the center of a platform. The woman and the platform rotate with an angular speed of 5.20 rad/s. Friction is negligible. Find her new angular speed
An alpha particle (the nucleus of a helium atom formed by 2 protons and 2 neutrons with charge q = +2(1.6 x 10-19 C), Calculate the acceleration of the alpha particle
What is the pitcher's power output during the pitch and How much work does the pitcher do on the ball
An electron is initially at rest just outside a large copper surface that has the charge density of 1.20 x10-6 C/m2. How far has the electron moved in 1.07 x10-9 s if the field is uniform over this region.
A cannon fires a cannon ball at 853.59 m/s in a straight line that passes directly over an observer's head. how far is the cannon from the observer
The 5400m 1000-500mb thickness contour is often used as a proxy for the rain/snow line throughout much of the country. Calculate the mean virtual temperature of the layer for this thickness value.
Identical point charges of +3.6 C are fixed to diagonally opposite corners of a square. A third charge is then fixed at the center of the square, such that it causes the potentials at the empty corners to change signs without changing magnitudes.
the sled (100kg) rides on a slope, 30 degrees to the horizontal. The coefficient of friction is 0.8. what force is needed move the sled down
A storage tank contains 21.6 kg of nitrogen (N_2) at an absolute pressure of 3.54 atm. What will the pressure be if the nitrogen is replaced by an equal mass of CO_2 ?
A spring with a force constant of 1645 N/m is compressed 11.1 cm. Find the work done by the force compressing the spring
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