A square with an edge 8 cm long has an area of (8cm)(8cm) = 64 cm2. What is this area in square meters? Group of answer choices 0.64 square meters 0.0064 square meters 6400 square meters 640,000 square meters Which of the following does NOT correspond to the dimension of length? Group of answer choices fathom yard kilometer parsec angstrom light-year More than one of these is not a unit of length All of these are units of length

Q: A rectangular billboard in space has the dimensions 10 meters by 20 meters. How fast and in what…

A: Length contraction occurs only along the direction of motion. It needs 20 m side to appear as the 10…

Q: Identify the density of a 1.00kg cylinder that is 0.0390m tall with a 0.0390m diameter.   A.…

A: Given data:  Mass of cylinder (m) = 1.00 kg = 1000 g Height (h) = 0.0390 m = 3.90 cm Diameter (d) =…

Q: The speed of light in free space has been measured to be 2.99792458 × 10^8 (A) 3 Significant…

A: Given data:  Speed of light in free space c = 2.99792458×108 m/s Required: Speed in 3, 5 and 7…

Q: An observer standing on the deck of a ship just sees the top of a lighthouse. The top of the…

A: Given: The top of the light house is h1=40 m. The height of the observer eye is h2=5 m. The…

Q: A radio transmitter broadcasts at a frequency of 155kHz. What is the wavelength of the wave? ( speed…

A:

Q: One hundred milliliters of water has a mass of 100 grams. What would be the mass of 50 milliliters…

A: The mass of the 100 ml water is 100 g. By the unitary method, the mass of 1 ml of water is…

Q: Using a single dimensional equation, estimate the number of steps it would take a person with a step…

A: Given data: -  The step length of a person is l = 2.65 ft. The distance of Alpha Centauri from the…

Q: Contra Parmenides and a previously universally accepted idea, at the end of his life, Stephen…

A: In this question we have to select the argument made by Stephen Hawking.

Q: The sun is orbiting the center of the Milky Way galaxy in an approximately circular orbit with…

A:

Q: Light travels at a rate of approximately 186,000 miles per second. A light-year is the distance…

A:

Q: Calculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint: The…

A: The light-year is the unit of length, and it is used to represent the astronomical distance.

Q: man is standing near a window. The window is 6.06 meters tall. The man watches a falling stone pass…

A: Given: The initial velocity of the stone is 0 m/s. The length of the window is 6.06 m. The time…

Q: A speck of carbon dust may contain as many as 30 billion atoms of carbon, each atom having a mass of…

A: The energy associated to mass is given by the Einstein's mas energy equivalence.  E = m c2 where, m…

Q: A light-year is the distance light travels in one year at speed =2.998*10^8m/s a) How many inches…

A: (a) The distance traveled by the light in one year can be evaluated as, d=2.998×108 m/s365×24×3600…

Q: A light year is the distance traveled by light in one year. Identify the distance to a nearby galaxy…

A: Given data:  Distance of galaxy = 2×106 light years Speed of light (c) = 3×108 m/s Required:…

Q: An electron has a mass of 9.11 × 10−31 kg. A proton has a mass of 1.67 × 10−27 kg. What is the mass…

A: Electron's mass me = 9.11 × 10−31 kg Proton's mass mp=1.67 × 10−27 kg The ratio of proton mass to…

Q: Which of the following quantities has the greatest order of magnitude?    1. the number of stars in…

A: Given: There are three values having different magnitude as follows, Number of stars in Milky Way…

Q: The light from the sun takes 400 s to reach the earth. Assuming that the speed of the light is 2,…

A:

Q: 100 ,000m 10 years = 25 minutes = nm(nanometer) Sec(Seconds) Years %3D

A: Required:  100,000 m into nanometer 10 years into seconds 25 minutes into years

Q: Which of the following quantities has the greatest order of magnitude?  (1)the number of stars in…

A: The smallest power of 10 used to represent a number is called the order of magnitude of the number.…

Q: Orange-red  light has a wavelength of about 600 nm (nanometers).  What is the time required for this…

A: Given data:  Wavelength (λ) = 600 Nm = 600×10-9 m Required: Time required by light to travel…

Q: 12. Convert 4.6 light years to the distance in kilometers (speed of light = 300,000 km/sec) 1 lb =…

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Q: light year is measure of length equal to the distance that light travel in one year. compute the…

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Q: According to the equation, ? = ??², how does the amount of energy in a kilogram of feathers compare…

A:

Q: A volcano erupts on a tropical island and you see the eruption before you hear it because light…

A:

Q: Suppose the planet Mars has an electric field similar to Earth's, producing a net electric flux of…

A: (a)According to gauss law, find the total electric charge on the planet.Substitute the values,

Q: (a) 1.25 light-years to miles (a light-year is an astronomical measure of the distance traveled by…

A: a) The distance that the light travels in a year is known as the light-year. It can be determined…

Q: A radio transmitter broadcasts at a frequency of 143kHz. What is the wavelength of the wave? ( speed…

A:

Q: In May 20, 2019, the definition of kilogram was changed from the definition in terms of Pt:lr…

A: Option B is the correct answer

Q: Why are light-years used to measure distances in space? O The speed of light is slower in space. O…

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Q: The speed of light is 2.998 × 108 m/s. One light-year is the distance that light travels in one…

A: Dear student, this question contains more than three sub-parts. As per guide lines we will answer…

Q: Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving…

A: Ans:- Image-1

Q: For each fundamental quantity used to describe the physical universe select'the correct Sl and USCS…

A:

Q: A light-year is the distance that light can travel in one year. Similarly, we can define a…

A: Given speed of light is 3*108 m/s.i.e., the distance light can travel in one second is 3*108 m/s.

Q: A light-year (ly) is the distance light travels in one year (at speed of 2.998 ×× 108 m/sm/s ). An…

A: Given that:- Speed of light=2.998×10^8m/s

Q: One year (yr) is 365.24 days. One light-year (lyr) is 9.467 × 10^15 m. Convert the speed of light…

A: Given information: The number of days in a year (yr) = 365.24 The speed of light (c) = 3 ×108 m/s…

Q: The cubit is an ancient unit of measurement for length, where 1 cubit is approximately 444.25 mm.  A…

A:

Q: • The light-year (ly) is a unit of distance commonly used in astronomy. It is defined as the…

A:

Q: The speed of light in free space has been measured to be 2.99792458 x 108-m/s. Express the speed of…

A: Speed of light in free space = 2.99792458 × 108 m/s  ( this value consists of nine significant…

Q: A light year is defined as the distance that a beam of light travels in one year. Convert a length…

A: d=ct=299,792,458 m/s1 year315,57,600 s1 year=9.46×1015 m

Q: The distance from the Sun to the nearest star is about 4 x 1016 m. The Milky Way galaxy (shown) is…

A: The expression for the required number of stars is,

Q: The special theory of relativity is based on two principles: the relativity principle, which states…

A:

Q: Estimate the height of the building shown in the following figure by the method of triangulation.…

A: 1) Given: Persons height = 1.75 m Pole height = 3.5 m                                           From…

Q: Speed = distance / time.  The letter "c" is used to represent the speed of light. c = d / t…

A:

Q: Convert the following into scientific notation: 0.000000000564 O 0.564 x 109 O 5.64 x 10-10 O 5.64 x…

A: Given that the number is  0.000000000564

Q: A spaceship is traveling through deep space towards a space station and needs to make a course…

A: Solution:                                  Ax =2.3×106Ay = 0Bx = 1.5×106 cos 70°By = 1.5×106 sin…

Q: convert 2.5 g/cm^3 to kg/m^3

A:

Q: Using the data in the table below and the appropriate conversion factors, find the mean distance to…

A: From the given table, the mean distance to the Moon is,

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.