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在关系式V.=30-2t中,V.随着t的变化而变化,其中自变量是________,因变量是________,当t=________时,V.=0.

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logX=(-K/2.303)t+logX0  10gC=(-K/2.303)t+logC0  logC′=(-K/2.303)t′+log(K0/VK)  10gC′=(-K/2.303)t′+log[K0(1-e-KT)/VK]  C=K0(1-e-Kt)/KV  
初速度为4 m/s  加速度为2 m/s2   在3s末,瞬时速度为10 m/s  前3s内,位移为30 m  
logX=(-K/2.303)t+logX0  10gC=(-K/2.303)t+logC0  logC′=(-K/2.303)t′+log(K0/VK)  10gC′=(-K/2.303)t′+log[K0(1-e-Kt)/VK]  C=K0(1-e-Kt)/KV  
logX=(-K/2.303)t+logX0  10gC=(-K/2.303)t+logC0  logC′=(-K/2.303)t′+log(K0/VK)  10gC′=(-K/2.303)t′+log[K0(1-e-KT)/VK]  C=K0(1-e-Kt)/KV  
logX=(-K/2.303)t+logX0  10gC=(-K/2.303)t+logC0  logC′=(-K/2.303)t′+log(K0/VK)  10gC′=(-K/2.303)t′+log[K0(1-e-KT)/VK]  C=K0(1-e-Kt)/KV  
logX=(-K/2.303)t+logX0  10gC=(-K/2.303)t+logC0  logC′=(-K/2.303)t′+log(K0/VK)  10gC′=(-K/2.303)t′+log[K0(1-e-Kt)/VK]  C=K0(1-e-Kt)/KV  
logX=(-K/2.303)t+logX0  10gC=(-K/2.303)t+logC0  logC′=(-K/2.303)t′+log(K0/VK)  10gC′=(-K/2.303)t′+log[K0(1-e-Kt)/VK]  C=K0(1-e-Kt)/KV  
logX=(-K/2.303)t+logX0  10gC=(-K/2.303)t+logC0  logC′=(-K/2.303)t′+log(K0/VK)  10gC′=(-K/2.303)t′+log[K0(1-e-KT)/VK]  C=K0(1-e-Kt)/KV  
v1=12m/s ,v2=39m/s  v1=8m/s ,v2=13m/s   v1=12m/s ,v2=19.5m/s  v1=8m/s ,v2 =38m/s  

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