A 20 story building casts a 350 m shadow over level ground. Each story of the building is 3.7 m in height. At what angle is the sun elevated above the ground?

Q: What is the speed of light (in m/s) in air? (Enter your answer to at least four significant figures.…

A: Explanation  Relation between speed of light in vacuum and speed of light in other medium is, cv=μ…

Q: A bus is moving forward at 10 m/s. A student on the bus throws a tennis ball horizontally at 15 m/s…

A:

Q: What is the moment of inertia of the object about an axis at the right edge of the sphere? kg-m2…

A: Moment of inertia of sphere:Icm3=25MR2it is passing through it's centertherefore:I=Icm+MR2…

Q: The sun is 150,000,000 kmkm from earth; its diameter is 1,400,000 kmkm. For a science project on…

A: Mirror diameter (D)=24 cm =0.24 mFocal length (f)=51 cm=0.51 m

Q: Plot the graph of n₁sin (0₁) vs sin (0₂). Perform regression analysis and determine the equation of…

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Q: 4 A 1 A iz B 5 A A 6 A 7 A C 2 A

A:

Q: The speed (V) of light in any transparent material is less than the speed of light c in a vacuum: V…

A: The speed of light in alcohol is valcohol=cnalcohol=3×108 ms1.36=2.2×108 ms

Q: John wants to measure the height of a tree. He walks exactly 100 feet from the base of the tree and…

A: Using trigonometric functions,  tanθ = P/B  tan33° = x / 100  0.64941 = x/100  x = 0.64941 × 100  x…

Q: . Water at the top of Horseshoe Falls (part of Niagara Falls) is moving horizontally at 9.2 m/sm/s…

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Q: Calculate the spectral line wavelength λ using the equation d sin 0 m X and its uncertainty X using…

A: the uncertainity in position Δx that is approximately equal to the particle's wavelength. In other…

Q: (d) 45° 45° T2 60° 60° T3 T4 T. T. 2 121.2471 X N T3 121.2471 T4 210 %D

A:

Q: A flask of ammonia is connected to a flask of an unknown acid HX by a 1.30  cm glass tube (where "X"…

A: Solution:   Given that,   Length of the Glass Tube (L)=1.30 m =130 cm Distance travelled by the…

Q: .A skydiver jumps from a plane at an elevation of 10,000 meters and seconds at an acceleration of 9…

A: Velocity of the diver after acceleration will be                v = at               v= 9x30 = 270…

Q: what is 5b angle of -A

A: 5b) Given that, the x component of the vector A is Ax=-36 The magnitude of vector A is A=82   Then…

Q: A deep-sea diver is suspended beneath the surface of Loch Ness by a cable of length h= 100 mthat is…

A: (B)The net force in the vertical direction must be zero. Assume the downward direction to be…

Q: The index of refraction is defined to be n = A/B where: A = speed of light in material #1 %3D B =…

A:

Q: Scenario: Claire is shown two mystery boxes that are both 8,000 cm . Her teacher tells her that one…

A: Given: Volume of both boxes, V = 8000 cm3 One box is filled with rock other with napkins.

Q: 1. The distance from the man's eyes to the ground is 1.78 m. The oil drainage ditch is filled with…

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Q: Find the angle h for the sun in the following positions 1)the inclination of the sun d=-20°…

A: Here given d= 20 . Again given two conditions of regardless of the effects of the atmosphere And…

Q: At a particular time of day, the Sun's elevation angle is 60° above the horizon. For a diver who is…

A: The sun is at angle 60° above to the horizon. So angle of incident is  i = 90-60 = 30° The…

Q: An opaque cylindrical tank with an open top has a diameter of 3.25 m and is

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Q: The length of the base of the prism never changes because it has sheer cliffs on the ends. Give a…

A: Given information: The width of the base of the prism (w) = 1 km The length of the base of the prism…

Q: With the sun directly​ overhead, an airplane takes off at a speed S of 235 mph at an angle θ of 17°…

A: Given  Speed of the airplane is v=235 mph Angle of the airplane with the horizontal is θ=17°   We…

Q: . A rectangular loop with side-lengths 0.2m and 0.4m is in a magnetic field B 0.25T as shown. There…

A: current passing through the coil, I=0.5 A length of the coil, L=0.2 m Width of the coil, W=0.4 m…

Q: Given: Three forces act on particle P. Force A has a magnitude of 15 N and acts 60° CCW from the…

A: a) Draw the free-body diagram of the system of forces.

Q: A ray of light travels from water to crown glass. If the ray of light in the crown glass makes an…

A:

Q: Some possibly useful numbers = 8.99 x 10° N m2/C2 €0 = 8.85 x 10-12C²/Nm2 4TEO %3D = 10-7Tm/A e =…

A: a) Req = R1 +(R2R3/R2+R3)  Req = 500 Ohm + (1000/2) = 1000 Ohm  b) current through R1  I1 = 9/1000 =…

Q: An airplane’s altimeter measures its altitude to increase at a speed of vvertical = 14 m/s. An…

A:

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.