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When the ultrasonic wave passes through the material containing residual stress, the speed of sound will change because of the residual stress and the residual stress inside the material can be obtained by analyzing and calculating the change of the speed of sound. Therefore, the measurement effect...
0 Object starts moving and stops moving? 0 Is a planet's escape speed the same speed as in a circular orbit around it? 0 Do released objects take the direction and speed of their parent frame's velocity, or just the parent frame's speed component? Hot Network Questions Was t...
When the ultrasonic wave passes through the material containing residual stress, the speed of sound will change because of the residual stress and the residual stress inside the material can be obtained by analyzing and calculating the change of the speed of sound. Therefore, the measurement effect...
We would like to calculate the speed v(t) of a body whose mass is m = 5 kg in freefall if its initial speed is 50 m/sec upward and the damping coefficient is γ = 1 N/m/sec. The acceleration due to gravity is g = 9.8 m/sec/sec in the MKS system. Hint: This is an ...
(a steplike increase in the horizontal H component at low latitude), we could derive an empirical formula for the relationship between solar wind dynamic pressure near the Earth and the CME speed; (3) the CME speed has a linear relationship with the difference of magnetopause locations derived...
Elevator Gravitation Initial initial speed Minimum Space Space elevator Speed In summary: Should be:r_{GSO}=(\frac{GMT^2}{4*\pi^2})^{1/2}In summary, the conversation discusses the concept of a space elevator, which allows cheap access to space in the far future. Before this is possible...
Be able to obtain the instantaneous speed at any particular instant from a curving distance-time graph. 6. Acceleration is defined to be a = Δv/Δt. Another useful formula is v = vo + at. Remember that an object starting from rest (vo = 0) and moving with constant acceleration, trav...
Answer to: A ball is thrown straight up with an initial speed of 36 m/s. How much time does it take for the ball to reach the top of its...
However, there is no explicit formula of the entropy kernel \chi for the general pressure satisfying (1.4)–(1.6). Even for the special entropy pair generated by \psi (s)=\frac{1}{2}s|s|, it is difficult to prove that \hat{q}\ge c_0\rho |u|^3 and -\hat{q}+\rho u\hat{...