What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that, when 94.0% absorbed, puts 540 J of energy into a circular spot 2.20 mm in diameter in 4.00 s? Discuss how this intensity compares to the average intensity of sunlight (about 700 W/m2) and the implications it would have if the laser beam entered your eye. Note how your answer depen

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A: The potential difference between the points , A and B is ,  Vb - Va  = 26V. .

Q: The electric field 2.8 cm from a small object points away from the object with a strength of 1.80 x…

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Q: and The ramp is initially at a horizontal position. The ramp is raised slowly to an angle of 36°, a…

A: a) Draw the free-body diagram of the block.

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A: To solve this problem we use conservation of energy initially ball will have potential energy as we…

Q: Four moles of an ideal diatomic gas change its volume from 2 m3 to 4 m3. The initial temperature of…

A: Diatomic Gas No. of moles = n = 4 R = 8.314 J/K Specific heat at constant pressure = Cp = 7/2(n)R…

Q: when using a magnifying glass, the magnification is greater when the magnified image is at?

A: Magnifying glass is convex lens in nature.   If object distance is = u ,   Focal length =f ,  Then…

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A:

Q: The capacitance is defined (5) Exercise 1.3. Calculate the capacitance of a circular disk of radius…

A: C = QVσ(r) = σ0RR2-r2

Q: A charge Q exerts a 1.2 N force on another charge q. If the distance between the charges is cut in…

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Q: Find the work required to pitch a 6.3 oz softball at 95 ft/sec. The work required to pitch a 6.3 oz…

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Q: A space probe is traveling in outer space with a momentum that has a magnitude of 7.32 x 107 kg-m/s.…

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Q: The temperature of a 5.00-kg lead brick is increased by 525 C°. If the specific heat capacity of…

A: Given, Mass of the lead brick is mlead=5 kg Change in temperature ∆T=525°C Heat capacity of lead is…

Q: A square steel plate is 14.0 cm on a side and 0.800 cm thick. Assume that the plate is oriented with…

A: Side of square plate = 14.0 cm thickness of square plate,t = 0.8 cm Magnitude of force,F = 5.0×105N…

Q: What is the angular resolution of the eye (in degrees) at a wavelength of 500 nm for a pupil…

A: Wavelength is λ=500 nm Pupil diameter is d=2.8 mm Note: 1 m=109 nm 1 m=1000 mm 1 rad=180π degree…

Q: Two equal positive charges are at opposite corners of a trapezoid as in Figure. Find symbolic…

A: Given Data: Two equal positive charges are at the opposite corners of a trapezoid. To Determine: The…

Q: A frequently quoted rule of thumb in aircraft design is that wings should produce about 1000 N of…

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Q: An AC source with AVmax=15.0 v operating at 55.0 Hz is driving the RLC circuit depicted in the blue…

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Q: A wall has 10 cm thick Styrofoam insulation covering an area of 120 square meters. If the inside…

A: Write the given values with the suitable variables. x=10 cm=0.10 mA=120 m2T1=23 °CT2=-10 °Ct=1…

Q: Consider the following figure: F 2F 1.5F Net force is 4.5 F and the net torque is 0.5FI in the…

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Q: 4. Think about the mousetrap car you built? Your car converted potential energy into kinetic energy.…

A: The potential energy of the spring is given by  U=12Kx2 where K is the spring constant and x is the…

Q: Samantha wishes to maintain her weight and goes to the gym to work off the calories she consumed at…

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Q: A proton is located at x = 1.0 nm, y = 0.0 nm and an electron is located at x = 0.0 nm, y = 4.0 nm.…

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Q: When a pendulum with a period of 2.00000 s in one location (g = 9.80 m/s2) is moved to a new…

A: Time period of a pendulum is the time taken by it to complete one swing from left to right and right…

Q: A athlete punches a 60-kg bag, with the speed of fist at 8 m/s. After the punch, the bag flies away…

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Q: Light propagating in the glass (n=1.52) wall of an aquarium tank strikes the interior edge of the…

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Q: Your mass is 86.8 kg, and the sled s mass is 17.2 kg. The sled is moving by itself on the ice at…

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Q: Lisa in her Lamborghini accelerates at the rate of (3.208-4.803) m/s2, while in her Jaguar…

A: Acceleration of Lisa (aL)=3.20 i^-4.80 j^ m/s2 Acceleration of Jill (aJ)=3.00 i^+3.80 j^ m/s2 Both…

Q: Kerepakupai Vena in Venezuela, more commonly known as Angel Falls, is the world's highest waterfall…

A: Let the mass of water = m height of the longest plunge (h) = 807 m Temperature of water at the…

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A: Here we have to find the self inductance of a solenoid in terms of number of turns(N) ,cross section…

Q: is located at coordinates (-a, 0) m, where a = 7.8 m; particle 2 with charge q2 = 2q is located at…

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Q: Problem 3: A satellite m = 500 kg orbits the earth at a distance d = 240 km, above the surface of…

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Q: An RLC series circuit is driven by a sinusoidal emf with angular frequency w. If w is increased…

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Q: A mass m = 3.2 kg is at the end of a horizontal spring of spring constant k = 325 N/m on a…

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Q: A particle with positive charge q = 1.92 x 10-18 C moves with a velocity v = (51+ 41 - k) m/s…

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Q: A 217- gram mass is connected to a spring for which the spring constant is 20- N/m and is free to…

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Q: Three point charges -Q, -Q, and +3Q are arranged along a line as shown in the sketch. P R R R What…

A: Distance to point P from charge +3Q is R

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A: When the hammer is droped only one force acts on it that is force of gravity as shown below,

Q: The maximum speed of a 3.5-kg mass attached to a spring is 0.79 m/s, and the maximum force exerted…

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Q: Croquet ball A moving at 8.2 m/s makes a head on collision with ball B of equal mass and initially…

A: See below

Q: A standing wave on a string is produced when one end is fixed and the other is driven by a 76 Hz…

A:

Q: At Marquette's latitude, the distance from the surface of Earth to the north-south rotation axis of…

A: distance (r) = 4.39×106 m Time period of earth due to daily rotation = 24 hr

Q: Describe a scenario where the magnitudes of the average velocity and average speed are not the same,…

A: Let's consider two points A and B, which are separated by a distance of x meter.

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Q: A car of mass m is traveling along a circular track of radius r with a constant speed v. Determine…

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Q: A ceramic capacitor has a value of C=10,000 pF. The capacitor consists of a dielectric disc between…

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Q: pump in a fountain pumps 109 gal of water a second through a 6.23-in diameter vertical pipe. How…

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Q: You need to choose the correct oil for the donut fryer (power of the fryer is 2000W). The oil has…

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Q: 2. Design a circuit using the four resistors so that the current through the emf is 12.0 mA when it…

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Q: A cylindrical region contains a uniform electric field that is parallel to the axis and is changing…

A: A cylindrical region contains a uniform electric field that is parallel to the axis and is changing…

Q: Three moles of an ideal monatomic gas are at a temperature of 395 K. Then 2777 J of heat is added to…

A: Given here gas is ideal mono-atomic number of mole = n = 3 Initial temperature = Ti = 395 K added…

Electromagnetic Waves

Electromagnetic waves are waves that consist of magnetic field and electric field components perpendicular to each other. These field components are also perpendicular to the direction of propagation of the wave.