Consider a laser of which all mirrors are 100% reflective except for the output mirror which reflects 96% of the output power and absorbs 1.25%. The gain medium has a length of 25cm and a small signal unsaturated gain at the transition line center of 01005/cm with a saturation intensity of 5W/cm2. What is the […]
1. Block A has a mass of 6.00 kg. Block B has a mass of 5.00 kg. The coefficients of friction between two blocks are μ s = 0.400 and μ k = 0.200. The coefficients of friction between the blocks and the ramp are μ s = 0.500 and μ k = 0.300. The […]
Problem 1: What happens, in decibels (dB), when we multiply sound intensity by 10? Your answer here: the sound intensity changes by ______dB Write down the equation that shows how this works Problem 2: If we quadruple the intensity of a sound, what is the change in decibels? Your answer here: ______dB Problem 3: If […]
Chapters 10 and 12 Written Homework Be sure to show all your work, particularly for odd-numbered questions. If you end up looking at a solution please cite the source of your information. 10 – 26: The angular acceleration of a wheel, as a function of time, is 𝛼 = 4.2𝑡2 − 9.0𝑡, where 𝛼 is […]
An airplane is flying due west at 240 MPH with a 40 MPH wind. What is the resultant vector velocity if the wind comes from the west? what is the resultant vector velocity of the wind comes from the east? what is the resultant vector velocity if the wind comes from the north? what is […]
Resistance of a resistor is modeled by the equation (1) Where R is the resistance (Ω), L is the length (m), A is the cross-sectional area (m2), and ρ is a constant dependent upon the material called the resistivity (Ω-m). The length, thickness and material of a wire affects the resistance of the wire. Some […]
An object is in free fall. At one instant, it is traveling at 46 m/s. Exactly 3.7 s later, what is its speed? The acceleration of gravity is 9.8 m/s? Answer in units of m/s.
Newton’s second law 1. How does the acceleration obtained from the experiment compare with the value you found using Equation 6 2. Report the acceleration obtained from your experiment along with its error. 3. Report the initial velocity of the glider obtained from your experiment along with its error. 4. Discuss the sources of uncertainty […]
Magnetic field and current related questions An initially uncharged capacitor with a capacitance of C= 00 pF is connected in series with resistor with a resistance of R= 4.5 kn. If this series combination of circuit elements is attached to an ideal battery with an emf of f= 450 V by means of a switch […]
A Cartesian Diver – Lab Activity Disclaimer: This activity is a customized version of the experiment found in the textbook with permission from Wiley Learning Goals: Students will be able to: ⦁ Improvise and build small physics experiment from household items ⦁ Observe and describe physical phenomena ⦁ Describe what Buoyancy is and how it […]
