D)2376 m/sDuring an Apollo moon landing, reflecting panels were placed on the moon. This allowed earth-based astronomers toshoot laser beams at the moon's surface to determine its distance. The reflected laser beam was observed 2.52 s afterthe laser pulse was sent. If the speed of light is 3.00x10 m/s, what was the distance between the astronomers and10)the moon?A)3.78x10 mB)37800000 m8.40x10 mD)8.40x10if you were the first Mars explorer and discovered that when you dropped a hammer if took 0.68 s to fall 0.90 m to theground, what would you calculate for the gravitational acceleration on Mars?11)A)4.32x 10 m/s

Given Time taken by laser beam t=2.52 sec speed v=3×108 m/s

Answered: During an Apollo moon landing,…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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C) The natural (Plank) Unit of a physical quantity Q has the form: {Q}Plank= ħn'cn² G™³ where: the Plank constant: ħ = 1.0545717260000002 x 10-34kg m²s-1 the light speed: and the universal constant of gravity: n1, n2 and n3 are suitable numbers that ensure the correct dimension of Q. c = 299792458 m/s = 6.673848 x 10-1'kg¬'m³s-2 Example: {velocity}plank=C=3.00x10® m/s [n1=0, n2=1, n3=0] Calculate the natural unit of n1= Volume {V}Plank (3 signiflcant n2= {V}plank= x 10 m/s? figures) [find n1, n2, n3 and take special care of the order of magnitude] n3=
39. A woman stands at a horizontal distance x from a mountain S and measures the angle of elevation of the mountaintop above the horizontal as 0. After walking a distance d closer to the mounțain on level ground, she finds the angle to be 4. Find a general equation for the height y of the mountain in terms of d, $, and 6, neglecting the height of her eyes above the ground.
C) The natural (Plank) Unit of a physical quantity Q has the form: {Q}Plank= ħn'cn²Gn3 = 1.0545717260000002 x 10-34kg m²s-1 c = 299792458 m/s where: the Plank constant: ħ the light speed: and the universal constant of gravity: = 6.673848 x 10-11kg-'m³s=2 n1, n2 and n3 are suitable numbers that ensure the correct dimension of Q. Example: {velocity}Plank=c=3.00x10® m/s [n1=0, n2=1, n3=0] Calculate the natural unit of n1= Volume {V}Plank (3 significant n2= {V}Plank= x 10 m/s? figures) [find n1, n2, n3 and take special care of the order of magnitude] D) Find the area of Palestine in square miles: APalestine=27000km²= x mile?. Find x. n3= Use: 1 mile=5280 ft ... 1ft=12 inch ... 1inch=2.54 cm X =
Given that the Diameter of Earth is about 7200 miles, how many Earths would fit across the Sun? You turn toward the east, seeing the full moon rising. You find that half of your finger tip at arm's length also covers the diameter of the Moon! Given that the diameter of the Moon is about 2160 miles, approximately how far from Earth is the Moon in miles and km according to your calculations?
Full solution to the whole qn pls Answers are: (a) 1 .62ms-2 , (c) 9.38 degrees
Show that
An astronomical unit (AU) is equal to the distance from Earth to the Sun, about 149.6 million km. A Parsec (pc) is the distance at which a length of 1 AU would subtend an angle θ of exactly 1-second of an arc. A light-year (Ly) is the distance that light, traveling through a vacuum with a speed of 3.0 x 108 m/s, would cover in 1 year (365 days). Express the Earth-Sun distance in: a) Parsec (pc) units. b) Light-year (Ly) units.
It’s a sunny Saturday afternoon and you are walking around the lake by your house, enjoying the last few days of summer. The sidewalk surrounding the perimeter of the circular lake is crowded with walkers and runners. You then notice a runner approaching you wearing a T-shirt with writing on it. You read the first two lines, but are unable to read the third line before he passes. You wonder, ”Hmmm, if he continues around the lake, I bet I’ll see him again but I should anticipate the time when we’ll pass again.” You look at your watch and it is 5:07pm. You estimate your walking speed at 3 m/s and the runner’s speed to be about 14 m/s. You also estimate that the diameter of the lake is about 2 miles. At what time should you expect to read the last line of the t-shirt?
In aviation, it is helpful for pilots to know the cloud ceiling, which is the distance between the ground and lowest cloud. The simplest way to measure this is by using a spotlight to shine a beam of light up at the clouds and measuring the angle between the ground and where the beam hits the clouds. If the spotlight on the ground is 0.75 km from the hangar door as shown in the image below, what is the cloud ceiling? 20° 0.75 km
The speed of light to five significant figures is 2.9979 * 108m>s.What is the speed of light to three significant figures?

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