A fireworks rocket explodes at a height of 125 m above the ground. An observer on the ground directly under the explosion experiences an average sound intensity of 6.85 x 102 w/m? for 0.190 s. (a) What is the total amount of energy transferred away from the explosion by sound? (b) What is the sound level in decibels heard by the observer? dB
Q: 129. In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the m...
A: The radius of the Sun is given as, R = 7×105 km The mass of Sun is given as, Ms = 2×1030 kg The mass...
Q: What is the Net Work ? Wnet = Fnetd cos θ Cart Mass, mc . 284 kg Angle, theta 49 degrees Dist...
A: Cart Mass, mc . 284 kg Angle, θ = 49 degrees Distance, d = . 75 m Suspended Mass, ms = . 260 kg Velo...
Q: If the balls were dropped from a height of 1 meter instead of 0.5 meters, how would the potential en...
A: As the potential of any object at height h is P=mgh where P is the potential energy, g is the accel...
Q: 1) To focus on a more distant object light rays must be ______ than to focus on close up objects. A...
A: To fill in the blank given in the question: To focus on a more distant object light rays must be ___...
Q: Other than from the ranges of wavelengths shown in Figure, can you find a way to distinguish radio w...
A: The velocity of an electromagnetic wave is related to wavelength and frequency as, fλ=cf=cλ ...
Q: Find the relative frequency shift ∆f/f for light emitted at the surface of the sun (radius 6.96 x 10...
A: Concept used: Frequency shift takes place when there is a relative motion between the source and obs...
Q: A 1200 kg SUV is moving along a straight highway at 12.0 m/s. Another car, with mass 1800 kg and spe...
A: Subpart (a): Note: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit...
Q: Each end of a string with u= 2.90 g/m is attached to two opposite walls. The distance between the wa...
A:
Q: A 2 kg ball with a radius of 0.35 meters is initially at rest. The rotational inertia equation for t...
A:
Q: A maser is a laser-type device thatproduces electromagnetic waves with frequencies in the microwavea...
A: Given, frequency of radio wave, f=1420405751.786 Hertz=1420405751.786 cycle/s And clock is off cont...
Q: Please estimate the solar cell efficiency of the profile listed below under standard solar illuminat...
A:
Q: Question: We want to make a tube which absorbs as much light as possible, how would we want to chang...
A: Tube must be wide so that a much area would be available to absorb the light and also deep because w...
Q: urgent
A: Using Gauss law in electrostatics The total electric flux through a closed surface is given by Wher...
Q: A stubborn stump is pulled by a pair of ropes, each with a force of 200 N, but at different angles a...
A: Given: Force is 200 N
Q: The drawing shows a device that you can make with a piece of cardt used to measure a person's reacti...
A: Given Distance d1 traveled = 60 ms = 60×10-3 s Distance d2 traveled = 120 ms = 120×10-3 s Dist...
Q: If V=2V_ _at x=lmm and V=0 at x=0 and volume charge density p, is –10°E, C/m³ constant throughout th...
A: Given: V=2 V x=1 mm V=0 ρv=-106 C/m3
Q: (b) Calculate the temperature and pressure rises on a short-pulse laser excitation of soft tissue at...
A: Given: Fluence is 10mJcm2. Absorption coefficient is 0.1cm-1.
Q: The Top Thrill Dragster at Cedar Point amusement park in Sandusky, Ohio, is one of the world’s most ...
A: Given the a train with mass m=10.5 ton (9525.44 kg) is accelerated to v=120mph (53.64 m/s) in 3.8 se...
Q: If an electric charge is placed in a magnetic field, the magnetic field will exert a force on the ch...
A:
Q: A prototype laser weapon tested in 2010 used a laser with an infrared wavelength of 1.06 μm, because...
A: Given: λ=1.06μm Energy emitted per photon=25kW.
Q: The proper period of an oscillator is 1.50000 s. In an environment with damping proportional to the ...
A: Given that:T=1.50000 sT'=1.50015 sE(t)=(100%-25%)Eo=0.75Eo
Q: Using the Free Space Propagation Model, what is the change in communication range if the centre freq...
A: The communication link range is given by the formula, r=c4π10ar201f (1)where,c : is speed of l...
Q: A15.0 kg load of bricks hangs fromone end of a rope that passes over asmall, frictionless pulley. A ...
A: Given: To draw the free body diagram with the two values as and the counterweight is shown as, Brick...
Q: A rookie quarterback throws a football with an initial upwardvelocity component of 12.0 m/s and a ho...
A: Given data Vyi=12 m/sec
Q: Explain the wave behavior known as diffraction. Draw the diffraction pattern that occurs when light ...
A: Given: To explain the wave behavior and the diffraction pattern is shown as,
Q: Is the following statement true? If not, why? Within the system, both the momentum and kinetic ener...
A: Within the system total momentum will be conserved. Because within the system any force acting on wi...
Q: A child starts sledding from rest, going down a 40 m long 7.5° incline, then coasting across a horiz...
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...
Q: 3.) This pendulumis at maximume angle w/r veitical, Does have an a, at this instant?
A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,...
Q: 3- Two capacitors are placed in parallel with each other. They have capacitances of 3.25 and 5.00 μF...
A: Charge on the capacitor can be calculated as , Q=CV, In parallel combination, C=C1+C2
Q: A convex spherical mirror has a radius R= 5.0 m. The base of a vertical f height y= 2.0 m is a dista...
A: (a) Given: The radius of a convex spherical mirror is 5.0 m. The height of the object is 2.0 m. The ...
Q: A vector quantity is represented with a vector because it has a magnitude only
A: A vector quantity is represented with vector because it has a magnitude ____________________ .
Q: On another planet that you are exploring, a large tank isopen to the atmosphere and contains ethanol...
A: Expression for velocity using rate of volumetric flow of ethanol is Q = Av where A =9 ×10-4 m2 , ...
Q: A pipe leads from a storage tank on the roof of a building to the ground floor. The absolute pressur...
A: Given is : The absolute pressure of the water in the storage tank where it connects to the pipe is...
Q: Let F(x, y) =〈1/x, −1/y〉. Calculate the work against F required to move an object from (1, 1)to (3, ...
A: Given: To find the work is required to move an object from (1, 1) to (3, 4) in the first quadrant is...
Q: Find Vo in the network shown. 8Ω 4 0 24 V Select one: a. 8
A: Here, in the right side loop 4 and 8 ohm resistors are in series so equivalent of these two is 12 o...
Q: Help me out please. Can’t figure out
A: Given:At what orientation angle relative to the magnetic field direction doesThe magnetic potential ...
Q: When no energy is lost to thermal modes in a collision, the coefficient of restitution is e = 1. Thi...
A: Given that: e=0.83mc=200 g=0.200 kgmg=45 g=0.045 kguc=88 mph=88×0.447=39.3 m/s
Q: How is the method used by the Chandra X-ray telescope to focus electromagnetic waves different from ...
A: The utilization of X-ray mirrors allows to focus the incident radiation on the detector plane. Diffe...
Q: MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You've entered the Great Space Race. Your engines are hea...
A:
Q: An uncharged capacitor of capacitance 8.0 pF is connected to a battery V. If the charge on each plat...
A: The capacitance of the capacitor is 8 pFLet C=8 pF=8×10-12 FCharge on the capacitor is, q=24 pC=24×1...
Q: Make a drawing of the path of an object in circular motion at constant speed. On that path, use a d...
A: Uniform Circular Motion In a uniform circular motion, the particle moves with constant velocity. Sin...
Q: What is the total energy contained in a 1.0. M length of the beam ? U= ? J
A: Given:- The total energy contained in a 1.0. M length of the beam ? U= ? J
Q: Two charged objects repel each other through the electric force. The charges on the objects are (i) ...
A: When the two objects have the same charge then the repulsive force acts between them and they repeal...
Q: A 20.0 mF capacitor is charged to a potential differenceof 800 V. The terminals of the charged capac...
A: Given data, Capacitance of first capacitor = 20 mF Potential difference between plates = 800 V Capac...
Q: What average horsepower is developed by an 80 kg man while climbing in 10 seconds a flight of stairs...
A: p=Et=mght
Q: Convert the three Y-connected resistors, 20, 10, and 5 ohms to three A -connected resistors Ra, Rb, ...
A: The resistances are transformed from Y configuration to Δ configuration. Let R1, R2 and R3 are the r...
Q: Can you solve it plz On a horizontal plane, a 2kg mass is attached toa spring whose spring constant...
A: Given: Mass attached to spring is m=2kg. Spring constant k=50Nm.
Q: Electromagnetics
A: Given q1=1nC=1x10-9C at O(0,0,0) q2=-2nC=-2x10-9C at P(1,1,1) Since unit of coordinates are not give...
Q: 4-7. If the moment produced by the 4-kN force about point A is 10 kN m clockwise, determine the angl...
A:
Q: A certain 60.0 Hz AC power line radiates an electromagnetic wave having a maximum electric field str...
A:
Step by step
Solved in 2 steps