Astrophysicists believe that our sun started out as a large cloud of hydrogen gas. Gravitational attraction between the gas molecules caused it to collapse. We can approximate both the initial cloud of gas and the sun to be spheres of uniform density. The mass of the initial cloud of gas and the sun are the same. The radius of the sun is much smaller than the radius of the initial cloud of gas. The sun now spins once every 24.5 days. The rotational kinetic energy of the sun is .

Q: Under some circumstances, a star can collapse into an extremelydense object made mostly of neutrons…

A: According to conservation of momentum principle,’ Iiωi=Ifωf Thus, 25MRi2ωi=25MRj2ωfRi2ωi=Rf2ωf

Q: A star that has the same mass and radius as the Sun rotates at an angular velocity 1.2 revolutions…

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Q: Calculate the angular momentum of the sun's spin angular momentum (assuming the sun is a uniform…

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Q: The corner of a plate selected as the origin is also the axis of rotation about the z-axis as shown…

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Q: A golfer plays a terrible shot, and slices the ball. The ball travelled at a velocity of 44.6 ms^-1,…

A: Given: Velocity of the ball v = 44.6 m/s Mass of the ball m' = 45 gm = 0.045 kg Radius of the ball r…

Q: The oxygen molecule has a mass of 5.30 x 10-26 k g and a moment of inertia of 1.94 × 10-46 kg m?…

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Q: The two particles of mass m and 2m, respectively, are connected by a rigid rod of negligible mass…

A: "You have asked to take 2m as 2.5 kg and m as 6.25 kg, which is not possible. Because the value of…

Q: A star has a mass of 2.94 x 1030 kg and is moving in a circular orbit about the center of its…

A: Given :    mass of star, M  = 2.94*1030 kg    Radius of orbit, R = 3.6*104 light year…

Q: 9-2 In the linkage mechanism, as shown in Fig. P9 - 2, OA-CB- 3-10 cm.a 3 rad/s. Determine the…

A: Given that : OA = CB = 1/2 * AB= 10 cm

Q: According to the law of conservation of momentum...  a total angular momentum is unchanged, it…

A: According to the Law of conservation of momentum, total angular momentum remain unchanged. So, if…

Q: At the end of its life, a star can collapse from the size of our Sun to the size of the Earth. The…

A: White dwarf A white dwarf is a dense, compact stellar remnant that forms after a star exhausts the…

Q: A star rotates in a circular orbit about the center of its galaxy. The radius of the orbit is 3.7 x…

A: The star takes 2.9×107 years to make one revolution around the center. Explanation:Step 1:Step 2:

Q: One popular design of a household juice machine is a conical, perforated stainless steel basket 3.30…

A: Given that, the diameter D of top side of bucket is 13.40 cm or 0.134 m and radius R is 0.067 mThe…

Q: Problem 4:  A merry-go-round at an amusement park consists of an outer ring of horses and an inner…

A: (a) Expression for the total moment of inertia of the carousel about its axis, in terms of the…

Q: A star with a of mass of 3.0x1032 kg and radius 7.0x108 m is initially rotating at a rate of once…

A: mass of star = 3×1032 kg Initial radius (R) = 7×108 m Initial time period (T) = 30 days final radius…

Q: 15) A 7.3kg bowling ball with a radius of 10.5cm is suspended from the ceiling by a 7.8m long cable…

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Q: What is the rotational kinetic energy in KILOJOULES of a spinner if it rotates at a constant speed…

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Q: A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a…

A: Angular motion is one in which a body will rotate around an axis. As in linear motion velocity of a…

Q: A lab technician uses a cylindrical projectile launcher to throw rubber spheres horizontally at a…

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Q: A star rotates in a circular orbit about the center of its galaxy. The radius of the orbit is 7.6 x…

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Q: A star rotates in a circular orbit about the center of its galaxy. The radius of the orbit is 4.6 x…

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Q: Our sun rotates around its axis once every 27 days. What is the sun’s angular velocity in…

A: It is given that, T=27 days=2332800 secM=1.98×1030 kgR=696340×103 m

Q: Problem 6: A bus contains a 1440 kg flywheel (a disk that has a 0.59 m radius) and has a total mass…

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Q: A summer intern uses a cylindrical projectile launcher to throw rubber spheres horizontally at a…

A: Given that: Mass of the sphere, m=0.120 kgDiameter, D=8.00 cm=0.0800 mRadius, R=D2=0.08 2=0.0400…

Q: tires need to be strong for a reason. Suppose the tread on a tire with a radius of 40cm has a mass…

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Q: Countries with excellent wind energy sources decide on national projects for the development of wind…

A: Figure 10.18 (ideal) provides the average crosswind distance and wind turbine spacing. As a function…

Q: 4. (a) State and explain the Kepler’s laws of planetary motion and hence derive the Newton’s law of…

A: Newton’s gravitation law of attraction states that every object in the universe attracts every other…

Q: ameter 8.00 2000 revolutions per Taxis. Solid pieces of fruit are choppe opular design of a Machine…

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Q: projectile is shot directly away from Earth's surface. Neglect the rotation of Earth (a) As a…

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Q: A star rotates in a circular orbit about the center of its galaxy. The radius of the orbit is 1.3 x…

A: ω=∆θ∆t∆t=∆θω

Q: An asteroid having a distance of 4.3 x 107 m from a planet revolves around it once every 26.7 days.…

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Q: The 18-cm-diameter disk in (Figure 1) can rotate on an axle through its center. For general…

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Q: (a) Calculate the angular momentum (in kg · m2/s) of Neptune in its orbit around the Sun. (The mass…

A: Mass of Neptune= 1.020×1026 kg radius of orbit =4.497×109 km = 4.497×1012 Time period=165 year=…

Q: What is the rotational kinetic energy in KILOJOULES of a spinner if it rotates at a constant speed…

A: Given system: Rotation speed of spinnner is 7575 rpm

Q: During your winter snowboard run at park city you decide to try a back flip during the movement.…

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Q: Slip. Consider the figure below. If µ, = 1/(2 + v3) between the surfaces, what is the smallest…

A: The forces are shown below

Q: A star originates as a large body of slowly rotating gas. Because of gravitational attraction, this…

A: The angular momentum of the gas cloud (star) remains constant that is conserved because the net…

Q: Let's consider the three atoms composing the molecule now have different masses and coordinate,…

A: Given  M1= 142.54 kg M2= 82.55 kg M3= 8 kg  D1= (3,6) D2= (1,6) D3= (5,9)

Q: One popular design of a household juice machine is a conical, perforated stainless steel basket 3.30…

A: Given that, the diameter D of top side of bucket is 13.40 cm or 0.134 m and radius R is 0.067 mThe…

Q: Titan completes one orbit about Saturn in 15.9 days and the average Saturn-Titan distance is 1.22 x…

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Fluid Pressure

The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.

Gauge Pressure

Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.