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A submarine sends a sonar signal, which returns from another ship 2.250 s later. How far away is the other ship if the speed of sound in seawater is 1,530.0 m/s? please show calculation.
A certain heat engine does 8.5 kJ of work and dissipates 8.50 kJ of waste heat in a cyclical process. What was the heat input to this engine
A sample of an unknown material weighs 300 N in air and 200 N when immersed in alcohol. The density of the alcohol is 70% the density of water. determine the volume of the unknown material
You charge an initially uncharged 80.9-mF capacitor through a 46.7-? resistor by means of a 9.00-V battery having negligible internal resistance. What is the charge after a long time
When you irradiate a metal with light of wavelength 435 nm in an investigation of the photoelectric effect, Find the work function of the irradiated metal in electron volts
A lady is pulling her luggage that has a mass of 24 kg. What is the total power exerted on the luggage by the lady
The coil in an electric generator has 100 turns and an area of 2.5e-3 m2. Find the magnet strength required for this generator
Puffy cumulus clouds, which are made of water droplets, occur at lower altitudes in the atmosphere. Wispy cirrus clouds, compute altitude above which wispy cirrus clouds can occur
A 1.0--diameter oil droplet (density 900 kg/m^3) is negatively charged with the addition of 28 extra electrons. What is the surface charge density of the plane
A satellite weighing 500 kg is in a circular orbit around the earth. It takes exactly 3 hour to go around the earth, What is the force of gravity on this satellite
A grinding wheel is a uniform cylinder with a radius of 8.5 cm and a mass of .580 kg. Calculate its moment of inertia about its center
An object 1.40 cm high is held 3.00 cm from a person\'s cornea, Find the magnitude of the radius of curvature of the convex mirror formed by the cornea
In SI units, the electric field in an electromagnetic wave is described by Ey = 100 sin(107x - ?t ). What is the frequency of the EM wave
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