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(a) What was the speed (in m/s) of the wave? For reference, the speed of a 747 jetliner is about 250 m/s. Find the wave's (b) frequency and (c) period.
The speed of a transverse wave on a string is 479 m/s, while the wavelength is 0.257 m. The amplitude of the wave is 2.06 mm. How much time is required for a particle of the string to move through a
What is the magnetic field at the edge of a 1 m diameter capacitor having a 1 mm gap charging with a 1 A instantaneous current carried by long wires as shown? What is the magnetic field 0.5 m from a
What are the sum and difference frequencies between A, 440 Hz and C, 523.25 Hz? What frequencies will a spectrum analyzer report when the two notes are played simultaneously?
One pulse is delivered every time the fully charged capacitor loses 64.7% of its original charge. What is the capacitance of the capacitor?
Between flashes, the capacitor recharges through a resistor whose resistance is chosen so the capacitor recharges with a time constant of 3.0 s. Determine the value of the resistance.
Find the electric field magnitude and direction (a) at the center of the square, (b) at the point (-a, -a), and (c) at the point (1/2a, 0). In each case state which protons contribute to the field y
Two particles with equal mass have positive charges of 1.0 microCoulombs and 1.0 nanoCoulombs. What is their mass if their mutual gravitational attraction balances their Coulomb repulsion? Why is th
Two submarines are underwater and approaching each other head-on. Sub A has a speed of 18 m/s and sub B has a speed of 14 m/s. Sub A sends out a 1040-Hz sonar wave that travels at a speed of 1522 m
determine its acceleration and the normal force on the rod at the instant that y= 1m. The force of the spring is found by F=ks, where k is the stiffness and s is the distance the spring is stretched
If the ambulance is stationary and you (the "observer") are sitting in a parked car, what are the wavelength and the frequency of the sound you hear?
A stone is dropped into a well and a splash is heard 2 seconds later. If the speed of sound in air is given as 343m/s, what is the depth of the well? Explain please.
In the measurement of length of a cylinder, the main scale reading of a vernier caliper is 1.5 cm, the vernier reading is 6, and the least count of the vernier is 0.01 cm. Find the reading of the l
A car starts from rest on a circular track that has a radius of 300m. It accelerates with a constant tangential acceleration of at= 0.75m/s^2. Determine the distance travelled and the time elapsed w
Concrete has a higher specific heat than soil does. Use this fact to explain (partially) why cities have a higher average night-time temperature than the surrounding countryside does.
Just as an empty box car passes him, the fugitive starts from rest and accelerates at a = 3.5 m/s^2 to his maximum speed of 8 m/s. (a) How long does it take him to catch up to the empty box car?
The Virgo cluster contains about 1300 galaxies and is at a distance of 16 Mpc. The galaxies have an RMS velocity about their center of mass of 600 km/s. How many galaxies do we need to observe in Vi
What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with a constant velocity? Express your answer as a positive angle south of east.
A heat engine is being designed to have a Carnot efficiency of 73% when operating between two heat reservoirs.
An infinitely long line of charge has a linear charge density of 7.00×10-12C/m . A proton is at distance 16.0cm from the line and is moving directly toward the line with speed 2200m/s . How cl
The parallel-plate capacitor used on each key of a computer keypad is a square 0.9cm on a side. Between the plates is a dielectric with k = 4.2. When the key is in the "up" position, the plate sepa
In an insulated vessel, 250 g of ice at 0C is added to 600 g of water at 18.0C. (a) What is the final temperature of the system? (b) How much ice remains when the system reaches equilibrium?
Sketch a PV diagram and find the work done by the gas during the following stages. (Draw the PV diagram on paper. Your instructor may ask you to turn in this work.)
Two stationary positive point charges, charge 1 of magnitude 3.25nC and charge 2 of magnitude 1.60nC , are separated by a distance of 60.0cm . An electron is released from rest at the point midway b
In a medical X-ray tube, electrons are accelerated to a velocity of 10^8 m/s and then slammed into a tungsten target. As they stop, the electrons' rapid acceleration produces X rays.