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A research historian is interested in finding sunken treasure in the Atlantic Ocean. She knows that her equipment is only good enough to recover items that are at a depth of 5 000 m or less. The speed of sound through the water is 1 530 m/s. While working, the sonar equipment detects a reflection that is of interest. The echo from the item takes 6.2 s to return to the sonar detector. Will she be able to retrieve this item?
Force F = (-9.0 N) i + (5.0 N) j acts on a particle with position vector r = (-5.0 m) j + (1.0 m) k. What is the torque on the particle about the origin
Two small plastic spheres are given positive electrical charges. When they are 15 cm apart, the repulsive force between them has magnitude of 0.220N. what is the charge on each sphere
specific heat of lead = 0.03 cal /gm -0c , latent heat of fusion of lead = 6 cal /gm -0c and j = 4.2 /cals
x-rays are scattered from a target at an angle of 48.5deg with the direction of the incident beam. find the wavelength
A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 2.5 seconds after being hit. What is the speed of the ball as it is clearing the fence
a base for a building column measures 18.0 in. by 18.0 in. on a side and 12 in. high. compute the cross-sectional area
a juggler traveling in a train on level track throws a ball straight up relative to the train with a speed of 6.40 ms.
Problem: Describe how the stability of an air mass can be explained concerning the lapse rate.
Use the small-angle formulas = (θ ×d)/206,265 to answer the following question: What is the actual diameter in light-years of the Cat's Eye Nebula if its angular diameter (arcseconds) = 20 and its distance (light-years) = 3,300?
A disk and a sphere are released simultaneously at the top of an inclined plane. They roll down without slipping. Which will reach the bottom first
1. Calculate the rest mass of the proton in units of MeV/c2 2. An electron has a total energy of 2.7 MeV. What is the relativistic momentum?
A 0.20-kg object attached to the end of a string swings in a vertical circle (radius = 80 cm). At the top of the circle the speed of the object is 4.5 m/s. What is the magnitude of the tension in the string at this position?
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