A science-fiction author asks for your help. He wants to write about a newly discovered spherically symmetric planet that has the same average density as the earth but with a 25% larger radius. (a) What is g on this planet? (b) If he decides to have his explorers weigh the same on this planet as on earth, how should he change its average density?

Q: A glass ball of radius 1.65 cm sits at the bottom of a container of milk that has a density of 1.03…

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Q: Consider a spherical water droplet in still air falling under gravity. If the radius of the droplet…

A: Radius of the droplet, r=25 μm=25×10-6 m Dynamic viscosity, η=1.8×10-5 kg/m·s Density of water is…

Q: A cube of mass 51 kg and side 28 cm is placed on a smooth, flat surface in a vacuum on a planet…

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Q: a cyclist and his bycicle have a combined mass of 55g. the total area of the tyres in contact is 2-2…

A: Given , mass(m) : 55g =550 N (Note: mass is given as 55g, which comes out toe be in newtons)…

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Q: A glass ball of radius 2.00 cm sits at the bottom of a container of milk that has a density of 1.03…

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Q: 1- Water enters the house through the hose of the inner radius of ( 4 cm ) and Velocity (300 cm/s )…

A: Write the given values with the suitable variables. r1=4 cmv1=300 cm/sv2=400 cm/s Here, r1, v1, and…

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A: X-coordinate of Center of mass

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A:

Q: 13.79. What wing area should a plane weighing 2000 Ib have to enable it to land at a speed of 35…

A: An aircraft's lift capabilities can be measured from the following formula: L=12ρv2A CL Where, L is…

Q: The length of a rod is 10 cm and the linear density of the rod at a point x centimeters from the…

A:

Q: An 8.0 cm x 8.0 cm x 8.0 cm cube of density 660 floats in an unknown kg m³ liquid of density…

A: Given : Dimension of cube = 8 cm * 8 cm * 8 cm Density of cube = 660 kg/m3 Height of cube in liquid…

Q: A boat having a length of 3 m and breadth of 2 m is floating on a lake. The boat sinks by 1 cm when…

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Q: A fishing bobber of unknown mass is a sphere with diameter of 3.00 cm. When the bobber is attached…

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Q: The Earth's atmosphere normally contains a large number of very small particles, for instance water…

A: Given: The radius (r) of the water droplet is 5 microns. The density of the water (ρ) is 1000 Kg/m3.…

Q: Consider a spherical water droplet in still air falling under gravity. If the radius of the droplet…

A: In this problem we have to apply the concept of Terminal velocity.…

Q: A wooden stick of length L, radius R and density p has a small metal piece of mass m (of negligible…

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Q: Using the methods of this article, determine the surface area A and volume V of the body formed by…

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Q: A solid bucket of lead plunges into the ocean at a depth where the pressure is 2.14 × 107 Pa. At sea…

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Q: What is the smallest number of whole logs ( ρρ = 725 kg/m3, radius = 0.80 m, length =

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Q: cylindrical container has a diameter d-0.1 m and height Z-05 m It is open at one end.. It is ed with…

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Q: A fuel pump sends gasoline form a car's fuel tank to the engine at a rate of 7.85 x 10-2 kg/s. The…

A: Given information:

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A:

Q: A large pipe with a radius of 50 cm has oil flowing through in at 1.5 m/s. The pipe narrows into a…

A: Answer - 37.5 m/s ( Option 3 )

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A:

Q: Suppose two worlds, each having mass M and radius R, coalesce into a single world. Due to…

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Q: Assume a certain liquid, with density 1 300 kg/m, exerts no friction force on spherical objects. A…

A: Apologies. We only answer three parts of the question at a time. we will answer the first three…

Q: A reservoir tank that is filled of water has a hole with a diameter of 15 cm. The height of water is…

A: According to the given question ,  first of all we have to writ down the all given conditions here ,…

Q: Consider a spherical water droplet in still air falling under gravity. If the radius of the droplet…

A: Radius of droplet is 25 micrtons=25×10-6 m Density of water is ρw=1000 kg/m3 Dynamic viscosity of…

Q: An airplane has wings, each with area 3.85 m2, designed so that air flows over the top of the wing…

A: The uplift force (F)= mg

Q: A completely filled barrel and its contents have a combined mass of 100 kg. A cylinder C is…

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Q: A small, spherical bead of mass 2.70 g is released from rest at t = O from a point under the surface…

A: Given: Mass of spherical bead m = 2.7 g. Terminal velocity vT = 1.7 cm/s. = 0.017 m/s.

Q: A boat with a flat bottom and it’s cargo weigh 4,311 N. The are of the boats bottom is 4m^2. How far…

A: Given, weight of the cargo boat, W = 4311 Narea of the boats bottom, A = 4 m2acceleration due to…

Q: Find the moment of inertia in kg-m^2 of a uniform gas sphere-mass density p of 0.687 kg/m^3 about an…

A:

Q: An empty 80-g can with a base radius of 8.0 cm and a height of 15 cm floats upright in fresh water.…

A:

Q: A fluid that occupies a volume of 24 L weighs 214 N at a location where the gravitational…

A: Given value--- Volume = 24 L. weight = 214 N. g = 9.80 m/s2.  We have to find--- mass ?

Q: A mine of radius 30cm and mass 12.5 kg is thrown overboard into the ocean. The mine is attached to a…

A: Given: The mass of the mine is 12.5 kg. The radius of the mine is 30 cm. The linear mass density of…

Q: A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 7.53x102 kg/s. The…

A: Given formation Mass flow rate of the fuel ( gasoline) (dm/dt) = 7.53 × 10-2 kg/s Density of the…

Q: State, for each of the following physical quantities, if it is a scalar or a vector:  Volume, mass,…

A: State the following is a vector or scalar quantity:

Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.