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A certain metal with atomic mass (2.1 x 10^-25)kg has an interatomic bond with length (2.3 x 10^-10)m and stiffness 42 N/m. What is the speed of sound in a rod made of this metal?
V=.............m/s
A speedboat starts from rest and accelerates at +2.32 m/s2 for 6.78 s. At the end of this time, the boat continues for the additional 5.34 s with an acceleration of +0.677 m/s2. Following this, the boat accelerates at -0.686 m/s2 for 8.68 s.
What is the longest wavelength of light that can be absorbed by a hydrogen atom that is initially in the first excited state
A drug tagged with 9943Tc (half-life = 6.05 h) is prepared for a patient. what is its activity (R) after it has been on the shelf for 2.0 h
The cockroach finds a bread crumb on the rim and, of course, stops. Illustrate what is the angular speed of the lazy Susan after the cockroach stops?
An iron bar of mass, 0.55 kg, slides down a frictionless incline 0.41 m high. What is the speed of the combined masses after collision
An 80 kg weightlifter is standing holding a bar weighing 981 N directly over his head. What is the GRF (ground reaction force) acting on the weightlifter's feet
Two trains on separate tracks move toward each other. Train 1 has a speed of 125 km/h; train 2 a speed of 84.0 km/h. What is the frequency heard by the engineer on train 1
Analysis of Physics, Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches
A ship travels 155 km from the port on a course of 35 degrees south of west to an island, then it travels 142 km east of south to a second island, Find the displacement from the starting point to the ending point
A 54 N crate is suspended from the left end of a plank. The plank weighs 21N, but it is not uniform, so its center of gravity does not lie halfway between the two ends. The system is balanced by a support that is 0.3m from the left end of the plan..
A 2 kg ball is thrown straight up in the air. What is the net force acting on the ball when it reaches its maximum height?
Evaluate what is the distance between the two dark fringes on either side of the central bright fringe?
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