设从此人所在处出发声音到达两壁并返回的时间分别为t1,t2;此人与两壁的距离
分别是S1,S2
已知:v声=340m/s,t2-t1=5s,S1+S2=1200m
求:S1=?S2=?
S1=t1*v声*1/2 S2=t2*v声*1/2
S1+S2=t1*v声*1/2+t2*v声*1/2=1200m=t1*340m/s+(t1+5s)*340m/s=2400m
t1*340m*1/2=S1=175m (t1+5s)*340m*1/2=t2*340m*1/2=S2=1025m
完美步骤
设从此人所在处出发声音到达两壁并返回的时间分别为t1,t2;此人与两壁的距离
分别是S1,S2
已知:v声=340m/s,t2-t1=5s,S1+S2=1200m
求:S1=?S2=?
S1=t1*v声*1/2 S2=t2*v声*1/2
S1+S2=t1*v声*1/2+t2*v声*1/2=1200m=t1*340m/s+(t1+5s)*340m/s=2400m
t1*340m*1/2=S1=175m (t1+5s)*340m*1/2=t2*340m*1/2=S2=1025m
完美步骤