Hippos spend much of their lives in water, but amazingly, they don't swim. They have, like manatees, very little body fat. The density of a hippo's body is approximately 1030 kg/m3, so it sinks to the bottom of the freshwater lakes and rivers it frequents--and then it simply walks on the bottom.

Q: On 23 March 2021 the giant container ship "Ever Given", under strong winds, swivelled round to…

A:

Q: In order to have enough water pressure to hold up a barefoot water skier, the boat needs to travel…

A: Here, Given equation is  :from this its clear :The starting speed, before any barefooter weight is…

Q: The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of…

A:

Q: Suppose that you release a small ball from rest at a depth of 0.590 m below the surface in a pool of…

A:

Q: A trough with a trapezoidal cross-section, as shown in the figure, contains vegetable oil with…

A: density of oil = 925 kg/m3Height = 3 m area of base = 2 * 6  = 12 m2

Q: Trying to escape an island, a person builds a 4 m x 3.2 m x .4 m rectangular raft from  American Oak…

A:

Q: Because of plaque buildup in an artery there is an obstruction in blood flow as shown in the sketch.…

A:

Q: A flat horizontal plate of area 400 cm² is dragged over a O.20 cm thick layer of oil at a speed of…

A:

Q: Proteinuria, excess protein in the urine, is a symptom of many kidney diseases. A marker for…

A:

Q: A man weighing 675 n is floating in fresh water with 2% of his body’s volume above the surface of…

A: Question: find the volume of the man’s body?

Q: Consider a spherical bacterium, with radius 0.95 μm , falling in water at 20° C.    Find the…

A: Given data: Radius r =0.95 μm Temperature T=20° C. Density of the bacterium, ρ = 1.45 × 103 kg/m3…

Q: A rock attached to a spring scale is lowered into a container of water. The scale reads 9 N and the…

A: Given data:  The scale reading (T) = 9 N The buoyant force (Fb) = 2 N Required: The true weight of…

Q: The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of…

A:

Q: totally immersed in (a) water and (b) mercury (p = 13.6 g/cm). What will be the initial acceleration…

A: According to archemede's principle  Bouyant force = weight of liquid displaced

Q: l-balanse mo, buoy! A 4.80 [kg] metal block is suspended vertically by a light string that is…

A:

Q: A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the…

A:

Q: aquarium activity- small hollow ball in water- once you have submerged the ball 1/4 and are holding…

A: A small hollow ball is submerged (1/4 th) in water The ball is being held at that particular…

Q: 1.0 kg of lead that is sinking to the bottom of a lake has more buoyant force on it than 1.0 kg of…

A: Given Data : The density of the water is given as ρwater=1001.8 kgm3 The density of the lead is…

Q: When a deep sea robotic explorer is tested in a lab, it is submerged in a liquid with a density of…

A: Given: Density of the liquid is 1.5 g/cm3. Density of water is 1.0 g/cm3. Depth before the structure…

Q: An object displaces 3 liters of water and weights 4 kg. Does the object floats on water? (water…

A:

Q: A small dock floats in the water. The dock is 2 m wide and 3 m long. With no one on the dock it…

A: Let N number of students can be piled on the dock.

Q: A block of mass 0.85 kg and density 600 kg/m3 is forced under the surface of the water by means of a…

A:

Q: An open container accelerates down a 30 degrees plane at 5m/s^2. What is the slope of the water…

A: Acceleration vector can be given as:- a= -5∠30 = -5cos(30) i^ -5sin(30) j^  m/s2 Acceleration due to…

Q: Assume a water strider has a roughly circular foot of radius 0.0152 mm. The surface tension of water…

A:

Q: A a) 1.00x103N b) 30.0 N

A: a) 1000 N and 30 N   Refer attachment

Q: An object with a mass of 0.37 kg is released from rest while immersed within a fluid. It reaches a…

A: SOlution: given that resistive force, R = -bv m = 0.37 kg speed reaches 52.2 % of its maximum speed…

Q: hat is the volume of the person that is above water? Express answer using two significant figures

A: Given  Mass = m= 75 kg  Volume=V = 0.086 m³ Weigjt = 75*9.8 =735 N  Density of water=p = 1000 kg/m³…

Q: The Dead Sea in Israel is at the lowest point on Earth. Due to its extreme salinity and mineral…

A: Here, the density of water (ρw) in dead sea is equal to 1240 kg/m3, assuming that density of human…

Q: An ice floe has a rectangular shape with dimensions of 15 x 6 x 0.15 m^3. What is the maximum mass…

A:

Q: A lobster tank in a restaurant is 0.75m0.75m long by 0.5m wide by 40cm deep. Taking the density of…

A:

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!