A train station bell gives off a fundamental tone of 500 Hz as the train approaches the station at a speed of 30.0 m/s. If the speed of sound in air is 339 m/s, what will be the apparent frequency of the bell to an observer riding the train? a. 456 Hz b. 544 Hz c. 250 Hz d. 530 Hz e. 339 Hz

Q: A cargo barge is loaded in a saltwater harbor for a trip up a freshwater river. Part A If the…

A: Measurements of rectangular barge, 3.5 m by 24 mDepth that barge sinks for in salt water, ds = 0.90…

Q: Suppose the magnetic field of an electromagnetic wave is given by B = (2.9 x 10-10) sin(kx - wt) T…

A: GivenB0 = 2.9 ×10-10 T

Q: A 2.5 g spider is dangling at the end of a silk thread. You can make the spider bounce up and down…

A: Explanation:Given that,Mass of spider = 2.5 gPeriod of oscillation = 1.0 secWe need to calculate the…

Q: Calculate the binding energy per mole of nucleons for sodium-23. Masses needed for this calculation…

A:

Q: a) A horizontal pipe has a diameter of 7.0 cm on the left section and a diameter of 4.0 cm on the…

A:

Q: The near point of a person's eye is 51.2 cm. (Neglect the distance from the lens to the eye.) (a) To…

A:

Q: What is the pressure exerted by water on a scuba diver who is swimming at a depth of 10 m below the…

A:

Q: Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 1.1 m/s and a…

A:

Q: At an instant in time, the electric and magnetic fields of an electromagnetic wave are given by E=…

A: Electric field of EM wave is Magnetic field of EM wave is Note:Permeability of free space is…

Q: Calculate the wavelength of a photon emitted when singly ionized helium (He+) transitions from the n…

A:

Q: Question 3 Using an approximate gravitational force of 10N/kg, and the formula "weight = mass x…

A: Weight  W = 55 NGravitational Acceleration g = 10 N/kg

Q: The reflecting surfaces of three mirrors form vertices with angles of 170o and 129o, as shown in the…

A:

Q: Light of wavelength 740.0 nm passes through a single slit of width 1.90 µm, and a diffraction…

A:

Q: A thin lens has a focal length of 25.0 cm. (a) Find the location of the image (in cm from the lens)…

A:

Q: Explorers in the jungle find an ancient monument in the shape of a large isosceles triangle as shown…

A: Write the expression for the volume of the monument and substitute the corresponding values.Write…

Q: In a parallel universe, the value of Planck's constant is 6.63x10-² J.s. Assume that the physical…

A:

Q: Question 7 A stopped car accelerates to 25 metres per second in 5 seconds. What is the average…

A: Write the given values to the suitable variables.Here, u is the final speed, and t is the time.

Q: A mirror is above a swimming pool and perpendicular to the surface of the water. A narrow beam is…

A:

Q: miranda travels 6 mph faster than Manuel and 8 hours they are 128 miles apart how fast is each…

A:

Q: A process at constant pressure pressure takes n mole rigid diatomic from an initial temperature T to…

A:

Q: The energy density of a black body is maximum at Amax = 1085 nm. Calculate t cemperature of the…

A: The wavelength at which energy density is maximum,                             We need to find the…

Q: Two uniform planks, each of mass m = 7.45 kg and length L = 2.51 m, are connected by a hinge at the…

A:

Q: Problem 2: A 200-turn coil has an area of 0.02 m² and is placed in a magnetic field of 0.5 T.…

A:

Q: A wire carrying a current I is bent into the shape of an equilateral triangle of side L. (a) Find…

A:

Q: Given the vector V = -3 ax + 2 ay, the unit vector av is: O a. av = -0.83 ax + 0.55 ay O b. av =…

A:

Q: A Carnot refrigerator operates with an efficiency n = 0.66666666666667 between a hot reservoir at…

A:

Q: 10. A soap film (n = 1.33) is formed in a loop of wire that is mounted vertically is not exactly…

A:

Q: Two solid bars of copper have different temperatures. The first one has a temperature of 20 °C,…

A: We have two bars of copper with temperature 20° C and 80 °C. Concept used. The temperature of a body…

Q: Pretend you are a NASA executive or a legislator. Design a new mission in our solar system.…

A:

Q: An electron moving with a speed of 2.7 x 105 m/s in the negative y direction experiences zero…

A:

Q: Question A2 An ideal gas occupies a volume of 1.75 cm³ at 30°C and atmospheric pressure. Calculate…

A:

Q: For the circuit shown below, assume R₁ > R₂ and answer the following questions. (A) How is V,…

A:

Q: A process at constant volume pressure takes n mole vibrating diatomic from an initial temperature T…

A: initial temperature = T.final temperature = 3T.for diatomic molecule the degree of freedom for both…

Q: The density of ice and water are 917 kg/m³ and 1000 kg/m³. The latent heat for the transition…

A:

Q: A disturbance passes through the Sun's corona (e.g. a CME) and produces radio emissions that are…

A: The given electron density  The temperature is (which is )The magnetic field strength is  (which is…

Q: Calculate the separation between interference fringes obtained in Young's experiment when 620.27 -nm…

A:

Q: n = 2.19 mol of Hydrogen gas is initially at T = 342 K temperature and pi = 1.68×105 Pa pressure.…

A:

Q: In order for Nick to see distant objects clearly, the lens in his glasses must form an upright,…

A:

Q: Problem 4: In a simple AC circuit shown on the right, R = 110 92, A4V=4Vmaxsin(at) where = 5.5 V,…

A: Resistance R= 110 ohmMaximum voltage ∆Vmax= 5.5 VAngular frequency ? = 65 rad/s∆V=∆VmaxSin(? t)…

Q: ▶ Problem 19: The winding of an AC electric motor has an inductance of 29 mH and a resistance of 2.…

A:

Q: A 6860 kg car traveling at 41 m/s is at the foot of a hill that rises 491 m in 1.7 km. At the top of…

A:

Q: A vehicle with headlights separated by 1.53 m approaches an observer holding an infrared detector…

A:

Q: A water bug on the surface of a pond bobs up and down three times per second on ripples with…

A: The speed of the wave is given by the relation,

Q: Plane-polarized light is incident on a single polarizing disk, with the direction of E parallel to…

A: If the transmission axes are at an angle , then . It is known that intensity is always proportional…

Q: An electron and a proton each have kinetic energy equal to 50 keV. (a) What are their de Broglie…

A: Given electron and proton each have equal kinetic energy K.Ee=K.EP=50 keVWe know mass of electron,…

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

A:

Q: If the mass-density of baryonic matter is rhoM = 10^-28 kg m^-3 and the current temperature of the…

A:

Q: While painting the top of an antenna 215 m in height, a worker accidentally lets a 1.00 L water…

A:

Q: Consider electromagnetic waves in free space. What is the wavelength of a wave that has the…

A: (a) Frequency, f = 4.74×1011 Hz(b) Frequency, f = 7.52×1016 HzWe have to find wavelength of wave.

Q: The position of a 55 g oscillating mass is given by x(t)=(2.4cm)cos13t, where t is in seconds.…

A:

Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.