If the Sun's mass is about average, how many stars are there in the Milky Way galaxy? The mass of the Sun is of the order of 1030 kg and the mass of the Milky Way galaxy is of the order of 1042 kg

Q: The measured distance on the ground between two points is 6.85 km. If the corresponding distance…

A: A map is an accurate visual representation of a physical feature that has been reduced to fit on a…

Q: Electrical energy is usually measured in kilowatts*hours, kWh. A watt is 1 joule per second. A…

A: UNITS AND DIMENSIONS

Q: Oxygen Atoms in People. Figure 5.7 shows that oxygen makes up about 65% of the mass of a human…

A: The objective of this question is to estimate the number of oxygen atoms in a human body and compare…

Q: A sphere has volume V = 950776 cm3; what is its radius? (HINT: The volume of a sphere is…

A: The volume of the sphere is given by,

Q: If you ran 5,890 meters, how many miles did you run? 1 meter = 3.281 feet 5280 feet = 1 mile

A: The distance traveled by a person is given as, d=5890 m

Q: The Earth is approximately spherical, with a radius of 6.37x106 m. Calculate the surface area of the…

A: Solution: Given data, The earth is approximately spherical. The radius of earth (R)=6.37×10⁶ m…

Q: How many nanometers are in a 5km distance?

A: Given: The distance is 5 km.

Q: A gopher has dug holes in opposite corners of a rectangular yard. If the yard is 9 meters by 12…

A: Dimensions of yard are  and Find:Distance traveled by the gopher to reach from one hole to another.

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: ow many miles does light travel in one hour? The speed of light is 1.86x10^5 miles per secon

A: Given Time is t= 1 hour =3600 s Speed of light is c=1.86×105 miles/s

Q: You start out by driving 153 miles north in 4 hours and 38 minutes, and then you stop and park for a…

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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: What is the size in μm of a cell that is 145mm wide in my photo. The scale bar in the photo is 1.7cm…

A: Scale bar is defined as 1.7 cm  long scale = 12 um 1 cm long scale = 121.7 cm 1 cm long scale = 7.06…

Q: What is the size of 1 Angstrom? O1x 10^-10 cm 1 x 10^10 m O 1 x 10^10 cm 1 x 10^9 m O1x 10^-10 m

A: Given    Length = 1 Angstrom    1 Angstrom is 10-10 th part of one meter length  Therefore  1…

Q: You start out by driving 152 miles south in 2 hours and 17 minutes, and then you stop and park for a…

A:

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: In astronomy, distances are often expressed in light-years. One light-year is the distance traveled…

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Q: What type of distribution is this graph.

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Q: nd the opening (2 mm from the light source), the illuminated area covers 4 m2m2. How many square…

A: Given:- A small light source located 1 m in front of a 1-m2  opening illuminates a wall behind.  If…

Q: The wavelength of a certain frequency of light is 5 x 10-7 meters. If the speed of light is 300,000…

A: Wavelength ( λ ) = 5 × 10-7 meter Speed of light ( c ) = 300000 km/sec

Q: A cell biologist measures the width of a cell. The width is 72μm . What is the width in meters?…

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Q: A piece of lead has a mass of 58 kg was placed on a rocket to the moon where the gravitational pull…

A: m=58 kggE=6gmgE=9.8 N/kg

Q: What is the difference between something happening in nanoseconds and something happening in…

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Q: How many hours would it take for you to run from nyc to la at a rate of 10km/h. The distance from…

A: Distance from NYC to LAis 2904 miles.  1 mile = 1.60934 km.  Therefore, total distance D = 2904 x…

Q: What is the force required to bring the aircraft to a safe halt? (in N)?

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Q: World is approximately 1.115x109 square kilometers. Convert this to square feet. There are 2.54…

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Q: In astronomy, distances are often expressed in light-years. One light-year is the distance traveled…

A: Solution attached in the photo

Q: How long would it take in seconds to travel a distance of 2000 meters if you are traveling at a…

A: Write the expression for time taken, and substitute 2000m for d, and 25m/s for v in the below…

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: The cheetah is known for being extremely fast. A cheetah can run 1 meter in 0.0346812 seconds. How…

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

A:

Q: In astronomy, distances are often expressed in light-years. One light-year is the distance traveled…

A:

Q: Suppose you are designing a proton decay experiment and you can detect 50 percent of the proton…

A: In a proton decay experiment 50 percent of proton decay in a tank of water is detect.

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