What was the PE when the mass of an object was 5kg and is 2 meters of the ground (height)? (Remember use 10 m/s? for gravity or g)

Q: one meter is 100 cm. Does it therefore follow that one cubic meter is 100 cubic centimeters? explain…

A: As we know, 1 meter is equivalent to 100 cm, So one cubic meter is equivalent to, 1 m3=100 cm3=106…

Q: An altitude of 57,175 feet is equivalent to how many kilometers? (1 in = 2.54 cm exactly)

A: Altitude in Feet 1 in=2.54 cm

Q: Prof. Chini's research group uses short bursts of laser light to measure the motion of electrons…

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Q: One cubic centimeter of a typical cumulus cloud contains 150 water drops, which have a typical…

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Q: During heavy rain, a section of a mountainside measuring 1.6 km horizontally (perpendicular to the…

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Q: Convert 25000 ± 410 (g/s)2 into Newtons/meters.

A: Concept Used - Unit Conversion  We know that, 1Newton = 1 kg-m/s^2 so, 1 Newton/meter = 1 kg/s^2 Or…

Q: How many times longer than the mean life of an extremely unstable atomic nucleus is the lifetime of…

A: Given that, the life time of unstable atomic nucleus is in the order of 10 s. (In actual case, it is…

Q: An object is dropped from 282 cm height. What is its displacement?

A: Distance is length of path between two points , while displacement is length of shortest path…

Q: If a person's height is 6 ft, what would it be the equivalent in cm? (round it off to the nearest…

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Q: What is the density (in vehicles/km/lane) if I have a 2 lane road, with a total of 60 vehicles, and…

A: Given data: Number of lane = 2 Total number of vehicles = 60 Road length = 500 m = 1/2 km = 0.5 km…

Q: The mass of an electron is (9.11)(10-31) kilogram, and the mass of a proton is (1.67)(10-27)…

A: Mass of the electron, me=9.11×10-31 kg Mass of the proton, mp=1.67×10-27 kg

Q: The volume of a cylinder is 5000 m^3. If the circular area is 1000 m^2, what should be the height in…

A: Given: The volume of the cylinder is V=5000 m3. Circular area or the cross-sectional area, A=1000…

Q: uldn't we convert the km/hr and m/hr?

A: Given, Nishi is driving his 2000kg car at 50 m/h. He diverts his attention from the road to message…

Q: The kinetic energy varies directly as the square of the momentum (?) and inversely as the mass (?).…

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Q: There is 2 m^3 of some gas with density 0.9 kg/m^3 The volume of gas was increased by factor of 2,…

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Q: Rank the measurements of surface area in order of the number of significant figures, from fewest to…

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Q: If the distance between earth and the sun were half of its present value, then how many number of…

A: We need to find- New time duration (T2)=? The data given as- Original time period (T1)=365 days…

Q: A 1.00×104 kg railroad car is rolling at 4.00 m/s when a 6000 kg load of gravel is suddenly dropped…

A: Given: Mass of railroad car, M=1.00×104 kg Mass of loaded gravel, m=6000 kg Initial speed of…

Q: A unit called the beard-second is the length the average beard grows in 1 second. A beard-second is…

A: Given 1 beard-second = 10×10-9 m

Q: Suppose velocity of an object is 5.7 miles per hour.  When asking this as a question, say, what is…

A: Given information:Velocity of the object (v) = 5.7 miles/hour.Velocity of the object in meters/sec…

Q: Is 3 m/s is greater than 2.9 m/s²? What is the explanation for this?

A: what is asked:- Is 3 m/s is greater than 2.9 m/s²

Q: Tectonic plates are large segments of the Earth's crust that move slowly. Suppose one such plate has…

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Q: during heavy rain, a section of a mountainside measuring 3.1 km wide horizontally, 1.1 km up along…

A: Given data -    density of the mud ( ρ ) = 1900kg/m3                        surface area of the…

Q: The stone used to construct the Great Pyramid of Giza has an average density of 160 pounds per cubic…

A: Given data:  Average density (ρ) = 160 lbs/ft3 Side of square base = 756 ft Height = 455 ft…

Q: How do you convert 6ug(micrograms)/g to mg/kg?

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Q: Lying side by side on their backs, how much area would the total human population cover in square…

A: Area covered by one person = 10 ft2 Then area covered by 7.01 billion people:  (7.01×109 )×10…

Q: One cubic centimeter of a typical cumulus cloud contains 310 water drops, which have a typical…

A: number of water drops in 1 cubic centimeter of typical cumulus cloud = 310 typical radius of each…

Q: The density of water is 1 gram per cubic centimeter (g/cm³). Express this (a) in kilogram per cubic…

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Q: A room has dimensions of 9.8 meters by 8.3 meters by 3.5 meters. Air has a mass density of 1.3…

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Q: Convert 4800 meters into feet. Round your answer to the near...

A: Given,  4800 meters We need to convert,  4800 meters in feet =?

Q: If a rock falls from a height of 33 meters on Earth, the height H (in meters) after x seconds is…

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Q: You drive up a long road inclined at 10 degrees for 1.5 miles.  How may meters of elevation increase…

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Q: If the plate shown in the Figure has a density that varies according to ρ= ρ0 (1+x8/(2b4 )) ,…

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Q: An everage family of four uses roughly 1200 liters - about 300 gallons - of water per day. How…

A: The Average family uses  water about 1200 liter/day Now as the total population of the town is…

Q: (a) An irrigation pump can deliver 200 /min. Express this rate in megalitres per day. (b) Express…

A: Required Conversion of units

Q: What is the height of a 4 ft 2.3 in tall person in meters? Hint The height of this person is m.

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Q: (0.59 x 10^-6 x 0.3) / (0.36 x 10^-3) when you calculate that don't you get 4.9166 x 10 ^-4 m not…

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Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.