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By what fraction are the wavelengths in this star's spectrum shifted?

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Physics

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Q: Nuclear power plants use nuclear fission reactions to generate steam to run steam-turbine generators...

A: In the nuclear fission reaction, the nucleus of a uranium-235 atom absorbs a neutron and splits into...

Q: An insulated beaker with negligible mass contains liquid water with a mass of 0.210 kgkg and a tempe...

A: The expression from heat transfer,

Q: 5. A gas is compressed at a constant pressure of 0.800 atm from 9.00 L to 2.00 L. In the process, 40...

A: (a)The expression for the word done is:

Q: What is the capacitance of a pair of circular plates with a radius of 8.0 cm separated by 3.0 mm of ...

A: Consider the distance between the plates be d, the permittivity of free space be Ɛ0, the dielectric ...

Q: How much energy must be removed from a 100 gg block of ice to cool it from 0∘C∘C to -30 ∘C∘C? The sp...

A: The expression for the energy is,

Q: Can we convert internal energy into work?

A: first law of thermodynamics gives the conservation of the energy where heat and work are the two met...

Q: A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +4...

A: The image from the first lens will act as the object of the second.The distance to the image from th...

Q: A drop of liquid under no external forces is always spherical in shape.

A: The least amount of energy state is the most stable condition for any system. In order to avoid the ...

Q: A projectile is fired from the ground (you can assume the initial height is the same as the ground) ...

A: (1) The vertical speed at the maximum height is zero.Write the expression for vertical speed

Q: How much work is being done by the gas in the process with Work in Joules?

A: The work done will be the area under the curve.Thus, the expression for the work done is,

Q: Answer the questions and complete the chart.

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question s...

Q: A beachgoer in Florida notices the waves crashing ashore are spaced 14 meters apart and hit the shor...

A: The expression for the speed of the wave is,

Q: If air is a bad conductor of heat, why do we not feel warm without clothes?

A: Air is a bad conductor of heat because molecules are not close together as in solids. Thus, heat tra...

Q: Write difference between fission and fusion.

A: Difference between fission and fusion can be given as:

Q: Samir tests his new motorcycle by racing with Ahmad. Both start from rest, but Samirleaves the start...

A: (1)According to the kinematics equation, the displacement of the samir is.

Q: The force on a phonograph needle is 1.2N. The point has a circular cross-section whose radius is 0.1...

A: The equation for the pressure is given by,

Q: A student measures the thickness of a human hair by looking at it through amicroscope of magnificati...

A: The expression for the thickness of the hair is,

Q: Help with C

A: The volume of one drop

Q: How far (in m) does a car going 27 m/s travel in 8.6 s?

A: Distance travelled by car is,

Q: Explain why are the rooms often provided with double windows in cold countries?

A: Click to see the answer

Q: At a certain moment of time the angle between velocity and the acceleration of a particle is greater...

A: When an object is moving in a uniform circular motion, at any point of the motion the angle between ...

Q: In last fall's Homecoming victory, Al Konfurance, the star halfback of South's football team, broke ...

A: Let v be the average velocity, d be the distance covered, and t be the time taken to cover the dista...

Q: What is Pascal's law? Give formula of Pascal law and also its applications.

A: Pascal’s law states that the pressure applied to a fluid at rest in a closed contained is equally tr...

Q: Calculate the speed of efflux of kerosene oil from an orifice of a tank in which pressure is 4 atmos...

A: According to Bernoulli’s theorem,

Q: A science teacher tells her class that their final project requires students to measure a specific v...

A: Click to see the answer

Q: A projectile is fired from the ground (you can assume the initial height is the same as the ground) ...

A: (a)The maximum height of the projectile is,Substitute the values,

Q: Two small aluminum spheres, each of mass 0.0250 kilograms, are separated by 80.0 centimeters. How ma...

A: Step 1It is given that mass, the separation distance, force between the spheres and number of electr...

Q: Consider two charges, where one (+2.70 nC) is at the origin and the other (-7.29 nC) is at the posit...

A: The values for two charges are given asQ1=2.70 nC at x=0Q2= -7.29 nC at x=d =2.49 cm

Q: A person walks first at a constant speed of 5.50 m/s along a straight line from point A to point B a...

A: Let the distance from A to B is d.Write the expression to find the time taken in both trips.

Q: A water drop is observed to fall through a gas of density 0.001g/cm3 with a constant velocity of 980...

A: From Stokes’s law, the formula for the viscous force is:

Q: Consider a steel bridge 200m long in a locality when temperature varies from 243K to 313K. Find the ...

A: Let l be the length of the bridge initially.Write the expression for the change in length of the bri...

Q: A car goes 50mile north and 50 miles east and 40miles south. It takes half an hour to complete the j...

A: Click to see the answer

Q: What is Huygens Principle?

A: Huygen’s principle describes how a wave is propagated.

Q: What are the different ways of increasing the number of molecular collisions per unit time in a gas?

A: The ways by which the number of molecular collisions in a gas can be increased are;

Q: If a person standing near a moving train, there is a danger that he will fall towards it. Explain.

A: If a person standing near a moving train, there is a danger that he will fall towards it because

Q: A spelunker is surveying a cave. She follows a passage that takes her a distance 176 m straight west...

A: Step 1Resultant vector a is

Q: Give an order of magnitude estimate, based on Faraday’s law, of the maximum induced emf detected by ...

A: Click to see the answer

Q: Your cat "Ms." (mass 7.00 kg) is trying to make it to the top of a frictionless ramp 2.00 m long and...

A: The below figure represent the motion of the cat along the ramp.

Q: How an ice box or refrigerator keep things cold for a long time?

A: Refrigerator works based on the principle heat is taken from the source at a higher temperature and ...

Q: Discuss the result when a thermos flask containing tea is vigourously shaken.

A: A thermos flask is an insulating storage object that does not transfer heat through it.From the kine...

Q: Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilut...

A: From heat transfer the expression is,

Q: Why does the pressure decrease when water flowing in a broad pipe enters into a narrow pipe?

A: Equation of continuity says that,

Q: Calculate rms velocity of CO2 molecule at NTP.

A: The formula Vrms

Q: The total translational kinetic energy of all the molecules of a given mass of an ideal gas is 1.5 t...

A: The expression for the average translational of a gas molecule is given by

Q: One mole of an ideal gas at standard temperature and pressure occupies 22.4 L (molar volume). What i...

A: Click to see the answer

Q: Task III:A car is parked on a steep incline overlooking the ocean, where the incline makes an angle ...

A: Click to see the answer

Q: A new quilt is warmer than old one. Why?

A: The working process of quilt is to keep warm the body. Quilt act like a insulator it keep the air wa...