Calculate the force pushing down needed to fully submerge a block of wood, with density of 100 kg/m^3 and volume of 0.8 m^3, in water. Give your answer N with 1 decimal place.   Density of water is 1000 kg/m^3 Use g = 10 m/s^2 Air pressure at sea level = 10^5 Pascal

a)What volume of air at atmospheric pressure is required to fill a 14 L diving air tank at a pressure of 1.45x10^7 N/m²? b) if sea level consumes 13.5 L of air per minute, how long will the air contained in the above tank last? c) How long will the air contained in this tank last at a depth of 10 m where the pressure has increased by 1 atm? Suppose consumption is the same as at sea level. "

A manometer containing water with one end connected to a container of gas has a column height difference of  h = 0.27 m  (see figure below). If the atmospheric pressure on the right column is 1.01 ✕ 105 Pa, find the absolute pressure of the gas in the container. The density of water is 1.0 ✕ 103 kg/m3. Pa

At a given instant, the blood pressure in the heart is 1.1 x 104 Pa. If an artery in the brain is 0.38 m above the heart, what is the pressure in the artery? Ignore any pressure changes due to blood flow. Number Type your answer here Units Choose your answer here

A woman of m = 58 kg stands on the ice. The contact area between her skate and the ice is A = 0.0047 m2. a. Express the force that the person exerts on the ice, F, in terms of m and g. You do not need to include the force of the column of air above her.

At a given instant, the blood pressure in the heart is 1.1 x 104 Pa. If an artery in the brain is 0.38 m above the heart, what is the pressure in the artery? Ignore any pressure changes due to blood flow. Number Type your answer here Units Choose your answer here

A popular pool toy allows the user to push a plunger to compress water in a barrel with a diameter of 3.5 cm. The water is compressed with a speed of 1.9 m/s and emerges from a small opening with a speed of 12 m/s. What is the diameter (in mm) of the opening? Assume the toy is oriented horizontally. mm

Assume you have 2100 spherical helium - filled balloons (neglect their mass). The diameter of each balloon is 0.4 m and the air mass density is 1.23 Kg/m. What is the maximum mass these balloons can lift by means of a massless string. O 0.033 Kg O 35 Kg O 53 Kg O 87 Kg

A manometer containing water with one end connected to a container of gas has a column height difference of h = 0.31 m (see figure below). If the atmospheric pressure on the right column is 1.01 ✕ 105 Pa, find the absolute pressure of the gas in the container. The density of water is 1.0 ✕ 103 kg/m3. Pa

Assume that a raindrop has a volume of 0.05 cm^3 and you need an Avogadro's number of raindrops to fill up the cubic water tank. What is the length of the edge of the tank?