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1. A spring with negligible mass stretches 34.0 cm when a 144 g gram mass is suspended from it. Now I suspend a mass m from the spring. If it oscillates at an angular frequency of 4.51 rad/s, what is the mass? 2. A 3.45 kg mass vertically compresses a spring 67.0 cm before it starts to rebound. How high will the Mass move above the uncompressed it the mass is left to "bounce" back up? 3. A transverse traveling wave on a cord is represented by D = 0.25 sin (6.8x + 28t) where D and x are in meters and t is in seconds. a) Determine the wavelength of this wave. b) Determine the frequency of this wave. c) Determine the speed of this wave. d) Determine the amplitude of this wave. f) Determine maximum and minimum speeds of particles of the cord. 4. A person is watching water waves at the ocean and they notice the peak to peak distance between the waves is 3.4 m. They also notice there are 55 waves every 10.0 seconds passing the end of a pier. How fast are the waves going? 5. A whale sends an undersea signal to its mate and then gets a response 4.5 seconds later. How far away is the whale's mate? 6. A person sees a distant lightning strike, then 4.5 seconds later he hears the thunder clap. If it is 35 degrees Celsius, how far away was the lightning strike? 7. A single bass amplifier produces a volume of 102 dB. What is the sound level if a guitar amplifier what produces 98 dB is played at the same time? ( Note: You are given the volume value in dB for two sound sources. the formula for B, B = 10*log(base 10) (I/I(0)). Inverting this we get I = I(0) *10^(B/10). I(0) = 1E^-12 W/m^2. If you have a scientific calculator you plug in for each volume and get the proper I value for each. The units are W/m^2. Now: Now to get the total sound level you need to know how to add them. The book does not give and example of this. The formula to use is B = 10*log(base10) [(I(1) +I(2))]/I(0) the units are dB) 8. A string on a guitar vibrates at 420 Hz. If the tension on the string is 102 N, what is the mass of the string if the portion that vibrates is 63.7 cm long?
Two 2.7cm -diameter disks face each other, 2.7mm apart. They are charged to ±14nC. What is the electric field strength between the disks
A 500-g block is released from rest and slides down a frictionless track that begins 2.00 m above the horizontal. At the bottom of the track, What is the velocity of the mass just before it strikes the spring
which describes the electric potential and the electric field at a point due to a negatively charged particle?a the
a person stands at the base of a hill that is a straigt incline making an angle omega with the horizontal. for a given
The electron gun in a traditional television tube fires electronsof kinetic energy 25 keV at the screen in a circular beam 0.22 mmin diameter; 5.6 multiplied by 1014 electrons arrive eachsecond. Calculate the magnitude of the magnetic field produc..
Compute your average velocity in the following two cases: (a) You walk 61.0 m at a speed of 2.26 m/s and then run 61.0 m at a speed of 3.38 m/s along a straight track. (b) You walk for 1.00 min at a speed of 2.26 m/s and then run for 1.85 min at 3..
A 24 Volt battery is connected in series with a resistor and an inductor, with R = 7.0 ohm and L = 1.0 H, respectively. Obtain the energy stored in the inductor
At a rock concert, the sound intensity 1.0 {\rm m} in front of the bank of loudspeakers is 0.10 W/m^2. How much energy is transferred to each eardrum in one second
A parallel plate capacitor has a capacitance of 8.5 μFwhen filled with a dielectric. The area of each plate is 1.5m2 and the separation between the plates is 1.4 x10-5 m.
What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 570 nm? The index of refraction of the film is 1.35, and there is air on both sides of the film.
Initially at rest, a small copper sphere with a mass of 2.10-6kg and a charge of6.10-4C is accelerated through a7700-V potential difference before entering a magnetic field of magnitude 4 T, directed perpendicular to its velocity. What is the radi..
A battery is designed to have an EMF of 12.0V. When the battery is connected to an unknown resistor in series the terminal voltage drops down to 10.0V. what is the value of the unknown resistor
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