172352 The sources of sound $A$ and $B$ produce a wave of $350 \mathrm{~Hz}$ in same phase. A particle $P$ is vibrating under an influence of these two waves. If the amplitudes at $P$ produced by the two waves is $0.3 \mathrm{~mm}$ and $0.4 \mathrm{~mm}$, the resultant amplitude of the point will be, when $A P-B P=$ $25 \mathrm{~cm}$ and the velocity of sound is $350 \mathrm{~m} . \mathrm{s}^{-1}$,
172352 The sources of sound $A$ and $B$ produce a wave of $350 \mathrm{~Hz}$ in same phase. A particle $P$ is vibrating under an influence of these two waves. If the amplitudes at $P$ produced by the two waves is $0.3 \mathrm{~mm}$ and $0.4 \mathrm{~mm}$, the resultant amplitude of the point will be, when $A P-B P=$ $25 \mathrm{~cm}$ and the velocity of sound is $350 \mathrm{~m} . \mathrm{s}^{-1}$,
172352 The sources of sound $A$ and $B$ produce a wave of $350 \mathrm{~Hz}$ in same phase. A particle $P$ is vibrating under an influence of these two waves. If the amplitudes at $P$ produced by the two waves is $0.3 \mathrm{~mm}$ and $0.4 \mathrm{~mm}$, the resultant amplitude of the point will be, when $A P-B P=$ $25 \mathrm{~cm}$ and the velocity of sound is $350 \mathrm{~m} . \mathrm{s}^{-1}$,
172352 The sources of sound $A$ and $B$ produce a wave of $350 \mathrm{~Hz}$ in same phase. A particle $P$ is vibrating under an influence of these two waves. If the amplitudes at $P$ produced by the two waves is $0.3 \mathrm{~mm}$ and $0.4 \mathrm{~mm}$, the resultant amplitude of the point will be, when $A P-B P=$ $25 \mathrm{~cm}$ and the velocity of sound is $350 \mathrm{~m} . \mathrm{s}^{-1}$,
172352 The sources of sound $A$ and $B$ produce a wave of $350 \mathrm{~Hz}$ in same phase. A particle $P$ is vibrating under an influence of these two waves. If the amplitudes at $P$ produced by the two waves is $0.3 \mathrm{~mm}$ and $0.4 \mathrm{~mm}$, the resultant amplitude of the point will be, when $A P-B P=$ $25 \mathrm{~cm}$ and the velocity of sound is $350 \mathrm{~m} . \mathrm{s}^{-1}$,