A wooden block floats in water, and a steel object is attached to the bottom of the block by a string as in Figure OQ14.3. If the block remains floating, which of the following statements are valid? (Choose all correct statements.) (a) The buoyant force on the steel object is equal to its weight. (b) The buoyant force on the block is equal to its weight. (c) The tension in the string is equal to the weight of the steel object. (d) The tension in the string is less than the weight of the steel object. (e) The buoyant force on the block is equal to the volume of water it displaces. Figure 0Q14.3

A block of wood has a mass of 3.94 kg and a density of 545 kg/m³. It is to be loaded with lead (1.13 x 104 kg/m³) so that it will float in water with 0.924 of its volume submerged. What mass of lead is needed if the lead is attached to (a) the top of the wood and (b) the bottom of the wood? (a) Number i (b) Number i Units Units

A solid cone made of unknown material is suspended from a scale. Before submersion, the scale reads 100 Newtons. After submersion in water the scale reads 88.0 N as shown below. (a) What is the force of buoyancy on the cone? (b) What weight of water is displaced by the cone? (c) What mass of water is displaced by the cone (in kg)? (d) What volume of water is displaced by the cone (in cubic meters)? (e) What is the volume of the cone (in m³)? (f) What is the mass density of the cone (in kg/m³)? (Density of water, p = 1000 kg/m³) 100 N 88.0 N

A block of wood has a mass of 3.71 kg and a density of 515 kg/m3. It is to be loaded with lead (1.13 × 104 kg/m3) so that it will float in water with 0.803 of its volume submerged. What mass of lead is needed if the lead is attached to (a) the top of the wood and (b) the bottom of the wood?

A scale reads 85 N when a piece of aluminum is hanging from it. What does it read when it is lowered so that the aluminum is submerged in water? The density of alluminum is 2700 kg / (m ^ 3); Useg = 9.8 m/s ^ 2 Calculate answer to two decimals .

A metal has mass of 8 kg when the mental is hanging from a spring scale and the totally submerged in water, the scale reeds 3.30kg. What is the density of the mental? (water density=1000kg/m^3) (A)2.80x10^3kg/m^3 (B)5.80x10^3kg/m^3 (C)1.70x10^3kg/m^3 (D)3.30x10^3kg/m^3

A spherical weather balloon is filled with hydrogen until its radius is 4.10 m. Its total mass including the instruments it carries is 16.0 kg. (a) Find the buoyant force acting on the balloon, assuming the density of air is 1.29 kg/m3. kN (b) What is the net force acting on the balloon and its instruments after the balloon is released from the ground? kN (c) Why does the radius of the balloon tend to increase as it rises to higher altitude? Because the external pressure     with increasing altitude.

A block of wood, whose volume is V = 0.050 m3, is attached to the bottom of a lake by means of a rope and it is completely immersed in the water. The block has a density of 0.75 × 103kg/m3 (while water has a density of 1.0 × 103 kg/m3). a) Compute the buoyant force and the weight acting on the block.b) What is the tension in the rope?c) If we cut the rope, the block will start accelerating towards the surface. Calculate its acceleration.

help A concrete block with a density of 6550 will sink in water, but a rope suspends it underwater underwater (that is, its completely underwater, not touching the bottom of the lake, and isn't moving. It measures 63 cm x 20 cm x 15 cm, and has a density of 6550 kg/m3. The density of water is 1000 kg/m3 Find the tension in the rope. Hint: Buoyancy problem - similar to the last problem, but add a rope pulling up.

A spherical weather balloon is filled with hydrogen until its radius is 4.30 m. Its total mass including the instruments it carries is 18.0 kg. (a) Find the buoyant force acting on the balloon, assuming the density of air is 1.29 kg/m³. 4.21 kN (b) What is the net force acting on the balloon and its instruments after the balloon is released from the ground? X kN (c) Why does the radius of the balloon tend to increase as it rises to higher altitude? Because the external pressure decreases v with increasing altitude.