Recent content by LBRRIT2390

Homework Statement What is the mass uncertainty, \deltam = m+ - m, of the particle? Homework Equations m = \frac{R*|q|*B}{v} where R = (6.4\pm0.1) cm (convert to meters so 0.064\pm0.001) |q| = 1.6*10-19 B = (2.50\pm0.02) T v = (5.25\pm0.04)x107 The Attempt at a Solution I...

Homework Statement A gust of wind hits a flagpole and starts it oscillating. After 10 s, the amplitude of its motion has decreased to 25% of its initial value. What is the value of the time constant? Homework Equations xmax(t) = Ae-t/\tau The Attempt at a Solution I know...

I am still lost...

I am working on the same problem, I don't understand what to do for post #10 and beyond. Can someone please help me!

Speed of wave in string: v = \sqrt{\frac{T_s}{\mu}} Ts = 100N \mu = 0.0012kg/m v = 288.7 Fundamental Frequency: F0 = \frac{v}{\lambda_0} \lambda0 = 2L = 2*1.2 \lambda0 = 2.4 f0 = \frac{\sqrt{\frac{T_s}{\mu}}}{2L} In the air: \lambda = \frac{v}{f_0} \lambda =...

Homework Statement A 120 cm-long steel string with a linear density of 1.2 g/m is under 100 N tension. It is plucked and vibrates at its fundamental frequency. What is the wavelength of the sound wave that reaches your ear in a 20 \circC room? Homework Equations Fundamental...

Homework Statement Astronauts visiting Planet X have a 2.5 m-long string whose mass is 5.0 g. They tie the string to a support, stretch it horizontally over a pulley 1.8 m away, and hang a 1.3 kg mass on the free end. Then the astronauts begin to excite standing waves on the string. Their...

I replaced the numerator Delta t0 with the proper lifetime. My answer is 2.599 x 10-5 seconds. Is this correct??

O should I be using the equation: K =( g - 1 )MC2 or K= (1/2)gMV2 ? What is the correct formula for calculating kinetic energy when a particle's speed approaches the speed of light??

Homework Statement A proton is traveling with a speed of v = 2.993x108 m/s. Calculate the value of the inertial mass for this proton. Assume that the speed of light is c = 3.000 x 108 m/s and that the mass of the proton is 1.673 x 10-27 kg. [SIZE="1"]Note: Do your calculations to 4...

Homework Statement A proton is traveling with a speed of v = 2.990x108 m/s. Calculate the (relativistically correct) value of the kinetic energy for this proton. Assume that the speed of light is c = 3.000 x 108 m/s and that the mass of the proton is 1.673 x 10-27 kg. [SIZE="1"]Note...

Homework Statement A muon is traveling with a speed of v = 2.995x10^8 m/s. Calculate the value of the dilated lifetime for this muon. Assume that the speed of light is c = 3.000 x 108 m/s and that the proper lifetime of the muon is 1.500 x 10-6 s. [SIZE="1"]Note: Do your calculations...

0.75? 3/4?

Homework Statement Five trumpet players have a sound intensity level of 75dB. What would be the sound intensity level of 30 such trumpet players? _______dB Homework Equations Increasing the sound intensity by a factor of 10 results in an increase in perceived loudness by approx. a...

This is SO simple, why can't I figure it out?? I need to figure out the length of 2 strings and L1+L2 = 4 I get to the point, using other parts of the problem that are not pertinent to this, of: 1.11L2 + L2 = 4 The answer is L2 = 1.9 HOW in the world does L2 work out to be 1.9? How...