2) A light bulb filament is made of tungsten. It has a cross sectional area of...
2) A light bulb filament is made of tungsten. It has a cross sectional area of 1.7 x 10-m and a length of 0.02 m. What tension force should you apply to the filament to stretch it by the diameter of 1 tungsten atom, which is 2.1 x 10-10 m? The Young's modulus for tungsten is 3.6 x 1011 N/m² (4 points)
PHY 121 Homework 12 Due: Thursday, November 21" Physics 121 Homework 12 1) You are riding a bike at a speed of 4.3 m/s. You apply the rear brakes and come to a stop in 4 seconds. The moment of inertia of the rear bike wheel is 0.15 kg.m', and its radius is 0.33 m. If the rear wheel is rolling without slipping, what was the average torque exerted on it during the 4 seconds that you applied the brakes?...
The filament of a 100 W (120 V) light bulb is a tungsten wire 0.035 mm in diameter. At the filament's operating temperature, the resistivity is 5.0×10−7Ω⋅m. How long is the filament? L=? m
10%) 0.0°C Problem 6: Consider that a 0.105 mm diameter tungsten filament in a light bulb needs to have a resistance of 0.25 2 at ムHow long should the filament be in m, assuming the resistivity of tungsten is 560 x 108 Ωm? Grade Sur Deductions Potential
If the 0.100 mm diameter tungsten filament in a light bulb is to have a resistance of 0.250 Ω at 20.0°C, how long (in m) should it be?
A voltmeter connected across the terminals of a tungsten-filament light bulb measures 117 V when an ammeter in line with the bulb registers a current of 0.641 A. a) Find the resistance of the light bulb. (Enter your answer in ohms.) b) Find the resistivity of tungsten (in Ω · m) at the bulb's operating temperature if the filament has an uncoiled length of 0.593 m and a radius of 2.33 ✕ 10−5 m.
The filament of a 100 W (120 V) light bulb is a tungsten wire 0.035 mm in diameter. At the filament's operating temperature, the resistivity is 5.0 × 10-7 Ω·m Part AHow long is the filament? Express your answer using two significant figures
Review Con: Part A An incandescent light bulb uses a coiled filament of tungsten that is 580 mm long with a diameter of 46.0 um. At 20.0°C tungsten has a resistivity of 5.25 x 1012.m. Its temperature coefficient of resistivity is 0.0045 (Cº) , and this remains accurate even at high temperatures. The temperature of the filament increases linearly with current, from 20°C when no current flows to 2520°C at 1.00 A of current What is the resistance of the...
Please give step by step solution so I can understand and follow along. I will rate, thank you. 3. A tungsten light bulb filament (see the figure at the right) is a coil of a coil to reduce evaporative losses (the light bulb itself contains an inert gas to also reduce evaporative losses and to also reduce the operating temperature of the filament. The inert gas is usually argon). The uncoiled diameter of the filament is 47 μm and the...