Israel always launch its photoreconnaissance satellites to the west

Q: Why Is Light Affected By Gravity?

A: The theory of relativity states that massive objects warps the spacetime around it. Since photons…

Q: Withrespect to its actual position, a bird on air appears to a fish in water____________ To be…

A: Answer- (1) To be nearer.

Q: How was the speed of light discovered?

A:

Q: uppose we place a circular, perfectly reflective mirror in orbit around the Earth. It has a mass of…

A:

Q: If a luminous object were moved to one-half the original distance, it would appear   a. one-half as…

A: The final distance is half of the initial distance. df=di2

Q: of illumination emitted by the sun at the greatest wavelength λmax = 0.5 pm and the greatest…

A: Given values:- Amount of illumination emitted at the greatest wavelength,(λmax)=0.5 pm -----(1)…

Q: Determine the wavelength of the maximum amount of radiation emitted by surface at 49 °C. Express…

A: Power = 100 W surface temperature (T) = 49o C = 322 K

Q: In the spectrum of a blackbody, the wavelength of peak intensity (a) decreases as temperature…

A: According to Wiens law product of the wavelength of peak intensity and corresponding Temperature is…

Q: Standing on the beach at sunset, you extend the tip of your finger at your full arm length from your…

A:

Q: Which of the following types of light have a wavelength greater than that of visible light?  I.…

A: There are various type of EM waves. All these waves have different types of wavelengths. The waves…

Q: How long does it take light to reach us from a distance of 3.10x1011m?

A:

Q: d. Diameter of the Sun I h A Standing on the beach at sunset, you extend the tip of your finger at…

A:

Q: Do higher energy gamma rays travel faster, slower, or at the same speed in space than lower energy…

A: The higher energy gamma rays and lower energy radio waves , both are part of same electromagnetic…

Q: Compare the size of the Moon on the horizon with its size higher in the sky. One way to do this is…

A: The moon appears bigger when it is near the horizon however the distance between the Moon and Earth…

Q: You have enrolled in a scuba diving class and while swimming under water in a nearby lake you look…

A: According to Snell's law,  n1sinθi=n2sinθrsinθr=n1n2sinθiθr=sin-1n1n2sinθi

Q: Determine the wavelength of the maximum amount of radiation emitted by surface at 49 °C. Express…

A:

Q: The distance from the Earth to the sun is 1.496x1011 m. A solar flare occurs on the sun’s surface on…

A: Given:- d = 1.496 x 1011 m

Q: An aurora borealis (similar to the northern lights) takes place in the upper atmosphere of the polar…

A: Gases 2 and 3 are present in this aurora.

Q: Define Ultraviolet Waves And Give Some Examples Of It

A: Ultraviolet waves are electromagnetic waves whose wavelengths fall under the ultraviolet spectrum.…

Q: Suppose you are standing such that a 32-foot tree is directly between you and the sun. If you are…

A:

Q: If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV,…

A: The increasing order of the wavelength of electromagnetic radiation is given by  gamma rays x rays…

Q: ASK YOUR TEACHER You want a telescope that discern objects that are at least 3.60 × 107 radians…

A: θ = 3.60×10-7 radians

Q: The Sun appears to be red as it sets because: 1. Air absorbs red light less than other frequencies…

A: Sun colour is comprises of seven colors. They are calles as VIBGYOR. V stands for violet. I stands…

Q: True or False: When a light source approaches us, there is an increase in the frequency we measure.…

A:

Q: Who gave the first ACCURATE value for the speed of light?    Albert Michelson   Isaac Newton…

A: The first precise calculations of light’s velocity was made in the 1920s by American physicist…

Q: Express the speed of light (3.00 x 10° m/s) in units of fathom/fortnight. 1 fathom = 6 ft 1…

A:

Q: A piece of iron is heated with a torch to a temperature of 858 K. How much more energy does it emit…

A: The Rate of energy radiated; P=AseT4 so, Energy α T4

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: You are using a hydrogen discharge tube and high quality red and blue light filters as the light…

A:

Q: Explain why the ring in the center is dark in the Newton's ring experiment.

A: The dark ring occurs when the destructive interference occurs at that point. The condition  for the…

Q: Galileo's telescope brought about revolutionary changes in astronomy. A comparable leap in our…

A: Given data *The space telescope brightness of the faintest object is I2 = (I1/50) Let d1 be the…

Q: If you were an observer on Mars looking at the earth through a telescope would you see the earth…

A: To find: If you were an observer on Mars looking at the earth through a telescope would you see…

Q: If a message relayed back from a spacecraft takes about two hours, how far away is the spacecraft,…

A: Time taken by message to reach earth from spacecraft = 2 hoursLet the distance of spacecraft from…

Q: assume you are a perfect black body and Temp=310K. At what rate, in watts, do you radiated energy?…

A: Solution:-

Q: 14. Which of the following instruments was used by Hertz during hi: experiment? * A. Cathode ray…

A: Answer:Cathode ray tube   In cathode ray tube ,it is the place where ionisation of noble gases takes…

Q: The basic design of the Michelson Interferometer has succesfully measured (select all that apply)…

A: A Michelson interferometer is a device that produces interference between two beams of light. It…

Q: You are using a hydrogen discharge tube and high quality red and blue light filters as the light…

A: Solution: Given: During the red light, mirror is moved away from beam splitter. During the blue…

Q: A meter stick, held vertically on a level ground, casts a shadow of 2meters long. Solve for the…

A: In this question we have to find the tangent and the angle. Please give positive feedback if the…

Q: The brightness, or intensity, of starlight varies inversely as the square of its distance from…

A: Answer :- Suppose The ground telescope sees an object of brightness 1 at a distance d, and  the…

Q: rom experience Measuring the velocity of light ***** Please solve the question in 20 minutes

A: Given that                The length of the block is (L) = 28cm = 0.28m   ( since 1m = 100cm)…