What is a standard candle in the astronomical sense? How do Cepheid variables fit into this and what are some other examples here?

Q: A toy rocket launcher contains a spring with a spring constant of 35 N/m. a). How far must the…

A: As per our guidelines, we are supposed to answer only first three subparts in case of multiple…

Q: Current Attempt in Progress Two-lens systems. In the figure, stick figure O (the object) stands on…

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Q: Trajectory shape of projectile Elliptical Parabolic Circular Horizontal

A: Required: The shape of the projectile motion's trajectory

Q: Explain the changes that happens to the horizontal velocity and vertical velocity of an object…

A: When a body is thrown in vertical direction with some initial velocity and making some angle with…

Q: There is acceleration on the horizontal motion of a projectile. T F

A: Given data:  A projectile motion Required: There is acceleration on the horizontal motion or not

Q: Please create a comparison table between the 5 common configurations of BJT amplifiers: CE fixed…

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Q: A magnet has a coercivity of 1x10^3 A ⁄ m. What current should be delivered through a solenoid with…

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Q: You pull on a string with a horizontal force of magnitude Fyb = 43 N that is attached to a block of…

A: Given data: Horizontal force Fyb = 43 N Block's mass mb = 7.5 kg Cylinder mass mc = 5 kg Radius r =…

Q: A soccer ball is kicked at an angle of 55° off the horizontal and with an initial velocity of 35…

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Q: Shown in the figure below is a set of two masses on a track. The regions with the solid black line…

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Q: Figure (a) shows the basic structure of a camera. A lens can be moved forward or back to produce an…

A: Solution:-

Q: 0.589 kg of water is initially at 13.3° C. If the temperature of the water is increased to 24.5° C,…

A: Write the expression for the change in heat energy. dQ=mcdT Here, m is the mass, c is the specific…

Q: Write the FORMULA for the moment of inertia of the door without the hornet: I =

A: As per guidelines only 3 subparts are solved here.

Q: Question 46 The magnitudes of the radii of curvature are 34.6 cm and 37.8 cm for the two faces of a…

A: Below I have provided the solution of the given question

Q: The electron density in copper is 8.49 × 1028 m-3. When a 0.8 A current is present in a copper wire…

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Q: A gas of N molecules is at temperature To and pressure Po. We compress the gas in an isothermal…

A: Isothermal process:- A thermodynamic process known as an isothermal process keeps the system's…

Q: natural frequency, the wavelength decreases, with the wavelength being a whole number division of…

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Q: A 72 kg man is wearing sneakers size 9 Narrow, which means that the sole of his shoe is…

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Q: A pendulum is 0.7 meters long, a) What is the frequency of its oscillation (Hz)? b). What is the…

A: a) Calculate the frequency of the oscillation. f=12πgLf=12π9.8 m/s20.7 mf=0.5955 Hzf≈0.6 Hz

Q: How many moles of oxygen (O₂) are contained in a 4.0 L cylinder that has a pressure of 110. atm and…

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Q: Please sketch the correct location for F3 on the picture, like where would F3 be from the black dot?

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Q: the slope. by a tow rope that maintains a constant tension force along the direction When apply the…

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Q: If all the air in a container is transferred to a contair twice as large, what will result? A.…

A: Pressure inside the container is due to collision of particle with the wall.

Q: A submersible is sent to explore the bottom of a lake that is 478 m deep. The density of water is…

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Q: A block of mass 0.23 kg, is placed on a flat surface inclined at angle relative to horizontal (as in…

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Q: A soccer ball is kicked at an angle of 55° off the horizontal and with an initial velocity of 35…

A: Given data:  Initial velocity (u) = 35 m/s Angle (θ) = 55°, above the horizontal  Required: The…

Q: The circuit shown has a 10.0 V battery connected to a cube with 2.00 mm sides and a resistivity 24…

A: 1) As per Kirchhoff's law: Sum of electric current at any junction is zero. 2) As per Ohm's Law:…

Q: Question 1 - At a certain instant a particle of mass 5 Kg is moving in the +x direction with a speed…

A: As per guidelines, only 3 subparts are solved. Given, mass, m = 5 kg  Speed is +15 m/s in +x…

Q: X 0.3 m 0.4 m F Z A 0.2 m B

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Q: A 0.307 kg mass on a horizontal frictionless surface is attached to a horizontal spring. The spring…

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Q: Different element will emit light at different wave lengths  true or false

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Q: Find the equivalent capacitance of the circuit below.

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Q: E15. Water emerges from a faucet at a speed of 1.5 m/s. After falling a short distance, its speed…

A: Given data: The speed, V1=1.5 m/s The speed, V2=3 m/s

Q: Microwave ovens rotate at a rate of about 1 rev/min. (a) What is this in revolutions per second?…

A: Given data:  Angular velocity (ω) = 1 rev/min Required: The angular velocity into rev/s and rad/s

Q: A fish weighs 4 kg when the elevator is at rest, it is then placed on a weighing scale as shown in…

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Q: 4) A 28 N body moves at 2.8 m/s². Solve for the ff: a) mass b) net force

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Q: What is the angle from we get the maximum c voltage in three phase

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Q: In household wiring, copper wire 2.05 mm in diameter is often used. Find the resistance of a 35.0 m…

A: Resistance,R=0.0456 Ω

Q: horizontal circular platform rotates counterclockwise about its axis at the rate of 0.851 rad/s.…

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Q: A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon…

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Q: Question 5 Which of the following models demonstrates refraction? . B D ||||

A: From the given options we have to tell which is correct option for refraction.

Q: The combustion of a gallon of gasoline releases 1.3x10^8 joules of energy la, how much mass is…

A: Given:- Energy E= 1.3×108 joules Now, We know that Mass energy relation E=m×c2 Or m= E/c2 Then ,by…

Q: Problem 3 A and B are two coils close. A has 1200 turns, and B has 1000 turns. When a current of…

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Q: The answer is wrong for all of them. Can you redo it?

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Q: The light emitted by atoms is energy in the form of electromagnetic radiation that we can see as…

A: When atoms are heated, they emit energy in various forms of electromagnetic radiation. They produce…

Q: Ice hasa melting point of 0oC and changes its states into water.What happens to its temperature as…

A: Melting point is that temperature of water,while increasing the temperature, when when ice change…

Q: small airplane is sitting at rest on the ground. Its center of gravity is 2.58 m behind the nose of…

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Q: The power transmitted to the external load resistance of 10 ohms by the battery is maximum only if…

A: The power transmitted to the external load resistance of 10 ohms by the battery is maximum only if…

Q: A box of mass 2.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

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Q: What amount of energy is stored in a heart defibrillator charged to a potential difference of 350V…

A: Given data:  Voltage (V) = 350 V Capacitance (C) = 25 μF Required: The amount of energy stored in…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.