What is the density of free electrons in the ionospheric layer at a critical frequency of 1.3 MHz

Q: What angular separation is obtained after two spectral lines of 550.0 nm and 632.0 nm are observed…

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Q: A refrigerator: A A) converts heat input to an equivalent amount of work B B) converts work to an…

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Q: E. 1//6 s 16. The tension in a string with tinear density of 10 g/m is 4 N. A sinusoidal wave with…

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Q: Velcity of a paticle moving in a curvilincar path varies with time as T= (2ti+:) m's where t is in…

A: Write the given values with the suitable variables. v→=2ti^+t2j^ m/st=1 s Here, v is the velocity…

Q: A moving cart of mass 3.5 kg crashes into a stationary cart of mass 10.5 kg as shown. The carts are…

A: let the less massive car move left with a speed v after collision. before collision lets its speed…

Q: A 10-m long homogenous beam with a weight of 50N is divided into 10 equal parts (1 m each) as shown…

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Q: Choose the missing nucleus in the following reaction: U +?+He + energy. Th O Th

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Q: We start with some review problems A crate of mass 34.7 kg rests on a level surface, with a…

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Q: 3. In the circuit shown in the figure below, find (a) the current in each branch of the circuit, and…

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Q: 10. A ray of light traveling in air is incident at angle 0 on one face of a 90° glass prism. Part of…

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Q: The yellow light from a sodium vapor lamp seems to be of pure wavelength, but it produces two…

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Q: The radius of the bronchial tube is decreased by a factor of 4. The velocity of gas through it…

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Q: An electron in a hydrogen atom changes from the n = 7 to the n= 2 state. Determine the wavelength of…

A: Wavelength of emitted photon will be minimum when frequency and energy of photon are maximum. for…

Q: What frequency sound (in Hz) has a 0.500 m wavelength when the speed of sound is 339 m/s?

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Q: a) Find the size of the smallest detail observable in human tissue with 50.5 MHz ultrasound. (Use…

A: In this question we have to find the  size of the smallest detail, the effective penetration depth…

Q: What is the intensity in watts per meter squared of 86.7 dB sound?

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Q: Figure 2-Torque It 3. A blowing ball with a 12 cm radius has an initial angular velocity of 5.0…

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Q: A force F = (10 + 0.5 x) N acts on a particle in the x-direction. The work done by the force in…

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Q: A force of 60 N acts on the block at the angle shown in the diagrar The block moves a horizontal…

A: GivenForce acting on block, F=60 Nat an angle, θ=30°Horizontal distance moved by block, d=5 m

Q: A red laser has a wavelength of 400 nm, and a maximum electric field of 50,000 N/C. If this laser is…

A: Given : Wavelength of red laser, λ = 400 nm Maximum electric field, Emax = 50,000 N/C

Q: A taut string having tension 263 N has a wave speed of 51 m/s when it is plucked. What should be its…

A: The velocity of wave in a string is given by: V=Tμ So with tension (T) velocity varies as:…

Q: How much heat (in J) is needed to boil 0.22 lb water that is initially at 98.6oF? The specific heat…

A: Given Mass of water = 0.22 lb Initial temperature of water =  98.6 °F The specific heat of water = 1…

Q: Find the frequency of X-rays of wavelength 2 x 10-10 m. Write your answer in exa-hertz.

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Q: What frequency sound has a 0.604 m wavelength when the speed of sound is 309 m/s?

A: Write the given values with the suitable variables. λ=0.604 mv=309 m/s Here, λ is the wavelength and…

Q: How much energy is required to completely melt 5.00 kg of gold which is initially at room…

A: energy required = energy to raise temperature+ energy to melt Q=mc∆t+mL

Q: 4m/s a ball the lift wit

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Q: 2. Charged partiele interactions and energy conservation A stationary charge, Q = + 31.0µC, remains…

A: GivenQ=+31 μCq=+7.7 μCm=1.18×10-5 kgMoving charge starts at position A with initial velocity, vA=892…

Q: The light emitted by stars spans a wide range of wavelengths. What color does the Sun's radiance…

A: The light emitted by stars spans a wide range of wavelengths. What color does the Sun's radiance…

Q: 2 moles of ideal oxygen gas are kept at 273 K in a volume of 11.35 dm3 with a molar heat capacity at…

A: a). The gas's final volume is 15.50 dm3 b). Work done is 1662.8 J c). 5880 J of heat has been…

Q: Express the units of the required quantity in terms of M-L-T

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Q: Standing waves are formed on a 360-cm-long string that is fixed at both ends. If the frequency of…

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Q: Consider a non-rotating space station in the shape of a long thin uniform rod of mass 1.68 x 10^6 kg…

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Q: 5. A photon of light has a wavelength of 0.050 cm. Calculate its energy.

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Q: [Frictioness Pulleys] 2. Find: T2 a. Acceleration M2 decek T3 b.T, d.T3 m, C. T2 Provide…

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Q: What can you say about Coulomb forces between two charges +1uC and +2µC separated by distance 1 um…

A: electric force is directed along th line joining the two charges

Q: ccounted for in the wave theory of light? A. The photoelectric effect B. The diffraction of light C.…

A: Given:-  Which phenomena is not accounted for in the wave theory of light? A. The photoelectric…

Q: CALCULATE THE TOTAL CURRENT ON THE RESISTIVE NETWORK SHOWN BELOW. R1- 25 ohms R3 =5 ohms R4 15 ohms…

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Q: Ultrasonic deep heating is accomplished by applying ultrasound of intensity 4.95 ✕ 103 W/m2 with a…

A: Given: The intensity of the ultrasound is 4.95x103 W/m2. The radius of the circular transducer is…

Q: Two charger dust particles exert a force of 3.2x10^-2 N on each other what will be the force if they…

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Q: 2. A 3.00 m long, uniform diving board has a mass of 26.0 kg and is securely fastened at point A and…

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Q: 3. A downhill skier, whose mass is 50.0 kg, attains a speed of 21.0m/s just as she reaches the point…

A: When an object moves in a circle, then a fictitious force acts on the object. It is called…

Q: 1. A concave mirror forms an inverted image three times larger than the object. Find the focal…

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Q: A vertical piston cylinder assembly containing water is being heated on a stove. During this…

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Q: A 50.0 kg skater is traveling due east at a speed of 3.00 m/s. A 70.0 kg skater is moving due south…

A: by conservation of momentum 50×3i^-70×7j^=50+70vcosθi^-vsinθj^

Q: An 6 hour exposure to a sound intensity level of 90.0 dB may cause hearing damage. What energy in…

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Q: An object is thrown from the ground with an initial velocity of 70 m/s and an angle of 40° with the…

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Q: 1. The limit to the eye's acuity is actually related to diffraction by the pupil. (a) What is the…

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Q: Three point charges, two positive and one negative, each having a magnitude of 35 micro-C are placed…

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Q: through a resistor so that it becomes 63 percent charged in 0.10 s. What should the resistance of…

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Q: 3. Car A rounds a curve of 150-m radius at a 54 km/h At the instant constant speed of 81 km/h…

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