An object weighs 90.1 N in air. When it is suspended from a force scale and completely immersed in water the scale reads 22.2 N. Determine the density of the object.
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- A plastic sphere floats in water with 35.0% of its volume submerged. This same sphere floats in glycerin with 27.9% of its volume submerged. (a) Determine the density of the glycerin. (b) Determine the density of the sphere.a) Calculate the buoyant force (in N) on a 2.40 L helium balloon. N (upward) (b) Given the mass of the rubber in the balloon is 1.90 g, what is the net vertical force (in N) on the balloon if it is let go? You can neglect the volume of the rubber. N (upward)The gravitational force exerted on a solid object is 5.25 N as measured when the object is suspended from a spring scale as in Figure a. When the suspended object is submerged in water, the scale reads 3.80 N (Figure b). Find the density of the object. kg/m³ Scale b TA B Mg T₂
- A scientist is calculating the density of an ore sample. The scien- tist measures that the ore sample weighs 22.4 N in air. When the sample is suspended by a thin light cord and totally immersed in water, the tension in the cord is 14.2 N. What is the density of the ore sample that the scientist calculates. You can assume that any buoyant force from air is negligible.A block of wood with a mass of 0.57 kg is floating on the surface of a lake. What is the magnitude of the buoyant force acting on the block?A solid block is suspended from a spring scale. If the reading on the scale when the block is completely immersed in water is 25.0 N, and the reading when it is completely immersed in alcohol of density 806 kg/m3 is 25.7 N, what are (a) the block’s volume and (b) its density?
- When an object is suspended from a spring balance (figure (a)) the reading is 8.80 N. When the suspended object is submerged in water (figure (b)) the reading is 4.40 N. Determine the density of the object. kg/m³ (a) spring scale Mog (b) spring scale FB FRA A TO & MogA window on a plane has a radius of 0.33 m. The plane crashes at a depth that the water pressure is 4.33 × 105 Pa, and the aeroplanes air is at atmospheric pressure 1.01 105 Pa. What force is surrounding the window keep it in place in newtons?9. A chunk of iron with a mass of 400.0g in air is found to have an apparent mass of 354g when completely submerged in an unknown liquid. (I) What mass of the liquid does the iron displace? (II) What is the density of the fluid? Density of iron = 7.8 g/cm.
- 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.Question 13 An object of mass 4.27 kg is connected to the lower end of a string. When the object is underwater and the tension in the string is 7.09 N. What is the smallest density of a liquid in which the rock will float? (PUHQ1326) a) O1000.00 kg/m3 b) O1810.00 kg/m3 c) O1200.00 kg/m³ d) 03680.00 kg/m³A 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.