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Q: Determine a, b, and c. Thank you.

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

Q: 59. In a typical squash game (Fig. 14–21), two people hit a soft rubber ball at a wall. Assume that ...

A: The loss in kinetic energy of the ball can be given by, KE=12mv2.............(1) Where, m = mass of ...

Q: A train is traveling at 50.0 miles per hour. 1 mile is equal to 1.61 kilometers. How fast is the tra...

A: 50.0 mih1.61 kmmi103mkmh3600 s=22.36 ms

Q: The dimensions of the quantity kinetic energy, designated by K, are kg • m2/s2. It can be written in...

A: Given :  Units of Force and Energy Required : Units of momentum in SI units in terms of kg, m , s an...

Q: A proton is released from rest in a uniform electric field of magnitude 400 N/C. (a) Find the electr...

A: a) The expression for find electric force is F=eE Substitute values in the above equation  F=1.6×10-...

Q: A small metal ball hangs from the ceiling by an insulatingthread. The ball is attracted to a positiv...

A: A small metal ball hangs from the ceiling

Q: (II) Energy may be stored by pumping water to a high reservoir when demand is low and then releasing...

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Q: In the year 2100, an astronaut wears an antique, but accurate, “quartz" wristwatch on a journey at a...

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Q: An AC current with a peak value of 1.0 A passes through bulb A. A DC current of 1.0 A passes through...

A: Peak value for AC current is the maximum value it reaches.

Q: Two parallel conducting plates are separated by a distance  d = 11.4 cm. Plate B, which is at a high...

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Q: Question 3 A 18.0-kg crate is being pushed across a level frictionless horizontal floor by a force 1...

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Q: Each of the displacement vectors A and B shown in the figure below has a magnitude of 3.0 m. 3.00 m ...

A:        Given -    A = 3.0 m                       B = 3.0 m                                        ...

Q: When a charged ruler attracts small pieces of paper,sometimes a piece jumps quickly away after touch...

A: This is because a charge plastic ruler is having a negative charge residing on its surface.

Q: Why does water in a metal canteen stay cooler if the clothjacket surrounding the canteen is kept moi...

A: Metal can is cooler 

Q: Why is wet sand at a beach cooler to walk on than dry sand?

A: Walk on the wet sand 

Q: An AM radio antenna picks up a 1000 kHz signal with a peak voltage of 5.0 mV. The tuning circuit con...

A: (a) The value of the capacitor that to be tuned to listen to the radio station can be determined as ...

Q: (II) A water heater can generate 32000 KJ/h. How much water can it heat from 12°C to 42°C per hour?

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Q: During a very short trip, the magnitude of the car's initial and final velocity are shown below. If ...

A: 3. Initial velocity vi=-30cos45∘i^-30sin45∘j^=-21.21i^-21.21 j^` Final velocity vf=15cos30∘i^+15sin3...

Q: (II) Samples of copper, aluminum, and water experience thesame temperature rise when they absorb the...

A: Heat supplied and the temperature rise is same.

Q: In What If? section of Example 4.5, it was claimed that the maximum range of a ski jumper occurs for...

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Q: (III) An electron (mass m = 9.11 × 10-31 kg) is acceler- ated in the uniform field É (E = 1.45 x 10ʻ...

A: Given: The mass of electron m = 9.11 x 10-31 kg, the uniform field E = 1.45 x 104 N/C, the separatio...

Q: rewrite the following using the given prefix. 6000000m =____________ Mm

A: We need to rewrite the following using the given prefix. 6000000 metres in terms of mega is a multip...

Q: A particle moves according to the equation x = 9t2, where x is in meters and t is in seconds. (a) Fi...

A: a) Given: Equation of motion, x=9t2 (1) Time, t1=2.20 s Time, t2=2.85 s

Q: At perigee, the Moon is 365,000 km from Earth. At apogee, it is 407,000 km away. How many times larg...

A: The angle covered by the moon at perigee position is, tanθ=ddperigeeθ=tan-1ddperigee Substitute the ...

Q: A positively charged rod is brought close to a neutral pieceof paper, which it attracts. Draw a diag...

A: When a positively charged rod is brought near to a neutral piece of paper, it will first induces a n...

Q: Three charges are at the corners of an equilateral triangle (side l) as shown in Fig. 17–45. Determi...

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Q: A blackbody radiator in the shape of a sphere has a surface area of 152 If it has a temperature of 1...

A: Given quantities: Temperature of the radiator (T) = 1200 K Surface area of the sphere (A) = 15 cm2  ...

Q: Which SI units are combined to describe force? O A. Kilograms and meters B. Kilograms and m/s? C. Ki...

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Q: A place kicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the cro...

A: The initial horizontal and vertical components of the velocity, vix=v0cosθviy=v0sinθ   Substitute, v...

Q: A vector has an x component of -22.5 units and a y component of 51.0 units. Find the magnitude and d...

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Q: The Paschen series is analogous to the Balmer series, but with m = 3. Calculate the wavelengths of t...

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Q: Contrast the net charge on a conductor to the “freecharges” in the conductor.

A: The net charge is the sum of all the + and - charges in the conductor.

Q: A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed o...

A: Given: Speed of throwing stone = 21.5 m/s Height of the cliff = 39 m  

Q: If V = 0 at a point in space, must E = 0? If Ē = 0 at some point, must V = 0 at that point? Explain....

A: Write the formula for the electric potential in terms of the electric field.

Q: Please help with this. Thanks

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Q: A huge 4.0-F capacitor has enough stored energy to heat 2.8 kg of water from 21°C to 95°C. What is t...

A: To determine: The potential difference across the plates of the capacitor Given: Capacitance, C=4.0 ...

Q: Two objects are made of the same material, but they havedifferent masses and temperatures. If the ob...

A: Here two objects are made of the same material, so the specific heat capacity of the objects are sam...

Q: Given the two charges shown in Fig. 16–68, at what posi- tion(s) x is the electric field zero? Õ+ -Q...

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Q: estion 10 Figure shows the velocity graph of a 65 kg student in an elevator. What is the net force o...

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Q: O Jupiter's third-largest natural satellite, lo, follows an orbit with a semimajor axis of 422,000 k...

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts (a, b, an...

Q: A satellite is in a circular orbit about the earth (ME = 5.98 x 1024 kg). The period of the satellit...

A: Expression for centripetal acceleration -  ac=v2r.....(1) Expression for acceleration due to gravity...

Q: In Rutherford's famous scattering experiments that led to the planetary model of the atom, alpha par...

A: Using law of conservation of energy, the expression for find distance is 12mv2=kqQrr=2kqQmv2

Q: (III) A real heat engine working between heat reservoirs at970 K and 650 K produces 550 J of work pe...

A: The efficiency of the real engine can be obtained as ηreal=WQH=5502500=0.22

Q: (I) A 0.20-F capacitor is desired. What area must the plates have if they are to be separated by a 3...

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Q: The floor of a house on a foundation under which the aircan flow is often cooler than a floor that r...

A: The thermal mass of a concrete floor is very high, meaning it has high specific heat and high heat c...

Q: (I) A heat engine exhausts 8200 J of heat while performing2600 J of useful work. What is the efficie...

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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.