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Objects A and B have the same mass of 4.3 kg and are at their melting points. They melt when 4.7 × 104 J of heat is added to A and when 11 × 104 J is added to B. (a), (b) Determine the latent heat of fusion for the substance from which each object is made. (c) Find the heat required to melt object A when its mass is 8.6 kg.
A postal employee drives a delivery truck along the route shown in the figure below. (x = 2.3, y = 3.6, and theta = 45o.) Determine the magnitude and direction of the resultant displacement by drawing a scale diagram. (Submit a file with a maximum ..
A 7130-kg car is travelling at 32.7 m/s when the driver decides to exit the freeway by going up a ramp. After coasting 369 m along the exit ramp the car\'s speed is 13.5 m/s, and it is h = 11.9 m above the freeway. What is the magnitude of the averag..
To save on heating cost, the owner of a greenhouse keeps 660kg of water around in barrels. find the minimum ampere rating of an electric heating system
A spring has a radius of 2.6 cm and an inductance of 75 μH when extended to a length of 0.9 m. Find an approximate value for the total number of turns in the spring. The permeability of free space is 1.25664 × 10−6 N/A^2.
Pure silicon is used as a photon detector. An incoming photon canstrike the surface and excite electrons from the valence band tothe conduction band, where they can be counted.
A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 0.0076 m/s2 less than that at sea level. Determine what is the observatory altitude in kilometer
An airplane flies due north in a region where Earth's magnetic field has magnitude 5.3×10?5T, declination 0?, and inclination 75?. What's the induced emf between the wingtips, 36 m apart, when the plane flies at 230m/s
A 1.8 meter tall man is 6 meter from the converging lens of a camera. Determine how tall is his image on the detector
A.2m wire is moved perpendicular to a.5magnetic field at a speed of 1.5m/s. what emf is induced across the ends of the wire
A point charge of +6 μC is located at x = −2 cm, and a second point charge of −8 μC is located at x = 1 cm. Where must a third charge of +2 μC be placed so that the electric field at x = 0 cm is zero?
A charge of -4.00 nC and a charge of -6.10 nC are separated by the distance of 60 cm. Find out the position at which a third charge of +7.90 nC can be placed so that net electrostatic force on it is zero.
The flux in a transformer changes at a rate of 0.4 Wb/s. The primary coil has 40 turns and the secondary coil has 500 turns
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