142752 An object is made of two equal parts by volume; one part has density $\rho_{0}$ and the other part has density $2 \rho_{0}$. What is the average density of the object?

142756 A uniform rod is suspended horizontally from its mid-point. A piece of metal whose weight is $w$ is suspended at a distance $l$ from the midpoint. Another weight $W_{1}$ is suspended on the other side at a distance $l_{1}$ from the mid-point to bring the rod to a horizontal position. When $w$ is completely immersed in water, $w_{1}$ needs to be kept at a distance $l_{2}$ from the mid-point to get the rod back into horizontal position. The specific gravity of the metal piece is

142757 A stone of relative density $K$ is released from rest on the surface of a lake. If viscous effects are ignored, the stone sinks in water with an acceleration of

142759 300 grams of water at $80^{\circ} \mathrm{C}$ are poured on a large block of ice at $0^{\circ} \mathrm{C}$. The mass of ice that melts is

142752 An object is made of two equal parts by volume; one part has density $\rho_{0}$ and the other part has density $2 \rho_{0}$. What is the average density of the object?

142756 A uniform rod is suspended horizontally from its mid-point. A piece of metal whose weight is $w$ is suspended at a distance $l$ from the midpoint. Another weight $W_{1}$ is suspended on the other side at a distance $l_{1}$ from the mid-point to bring the rod to a horizontal position. When $w$ is completely immersed in water, $w_{1}$ needs to be kept at a distance $l_{2}$ from the mid-point to get the rod back into horizontal position. The specific gravity of the metal piece is

142757 A stone of relative density $K$ is released from rest on the surface of a lake. If viscous effects are ignored, the stone sinks in water with an acceleration of

142759 300 grams of water at $80^{\circ} \mathrm{C}$ are poured on a large block of ice at $0^{\circ} \mathrm{C}$. The mass of ice that melts is

142752 An object is made of two equal parts by volume; one part has density $\rho_{0}$ and the other part has density $2 \rho_{0}$. What is the average density of the object?

142756 A uniform rod is suspended horizontally from its mid-point. A piece of metal whose weight is $w$ is suspended at a distance $l$ from the midpoint. Another weight $W_{1}$ is suspended on the other side at a distance $l_{1}$ from the mid-point to bring the rod to a horizontal position. When $w$ is completely immersed in water, $w_{1}$ needs to be kept at a distance $l_{2}$ from the mid-point to get the rod back into horizontal position. The specific gravity of the metal piece is

142757 A stone of relative density $K$ is released from rest on the surface of a lake. If viscous effects are ignored, the stone sinks in water with an acceleration of

142759 300 grams of water at $80^{\circ} \mathrm{C}$ are poured on a large block of ice at $0^{\circ} \mathrm{C}$. The mass of ice that melts is

142752 An object is made of two equal parts by volume; one part has density $\rho_{0}$ and the other part has density $2 \rho_{0}$. What is the average density of the object?

142756 A uniform rod is suspended horizontally from its mid-point. A piece of metal whose weight is $w$ is suspended at a distance $l$ from the midpoint. Another weight $W_{1}$ is suspended on the other side at a distance $l_{1}$ from the mid-point to bring the rod to a horizontal position. When $w$ is completely immersed in water, $w_{1}$ needs to be kept at a distance $l_{2}$ from the mid-point to get the rod back into horizontal position. The specific gravity of the metal piece is

142757 A stone of relative density $K$ is released from rest on the surface of a lake. If viscous effects are ignored, the stone sinks in water with an acceleration of

142759 300 grams of water at $80^{\circ} \mathrm{C}$ are poured on a large block of ice at $0^{\circ} \mathrm{C}$. The mass of ice that melts is