A. Calculate the focal length of the mirror formed by the convex side of a shiny spoon that has a 1.67 cm radius of curvature. B. What is its power in diopters?

Q: A proton and an a-particle (with their masses in the ratio of 1:4 and charges in the ratio of 1:2)…

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Q: Two objects are located along the y-axis. Object A has a charge of +25 µC and is located at the…

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Q: A 20-V potential difference is applied across a series combination of a 10-Ω and a 30-Ω resistors.…

A: Given Data:- Potential difference is ε=20 V Resistance of the two resistors are, R1=10Ω, R2=30Ω…

Q: Joanna travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles.…

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Q: A mirror produces an image that is located 38.0 cm behind the mirror, when the object is located…

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Q: Three point charges are fixed in place as shown in the figure below. What will be the electric…

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Q: 8. Determine the total equivalent resistance of the two resistances. 9.  If a 12 volt battery is…

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Q: In the figure, a 2.0-m-long vertical pole extends from the bottom of a swimming pool to a point 50.0…

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Q: Tell whether each pair of magnets will attract or repel. (5 & 7)

A: The rule is opposite poles attract each other and like poles repel each other. In 7, North pole is…

Q: Steam at 100 °C is bubbled into 4.00 kg of water at 15 °C in a calorimeter cup. How much steam will…

A: Let an amount m kg of steam be added. Then heat lost by steam = heat gained by water

Q: A 10 m long uniform board weighing 400 N is supported by ropes at each end. A worker weighing 900 N…

A: Length of board is L = 10 m  Weight of board is Wb = 400 N  Weight of worker is Ww = 900 N .…

Q: A circular shaft has a diameter d [m] that varies with axial position x [m] according to d =…

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Q: A drop tower of an amusement park rises at 5 m/s and is 45 m above the ground when one of the riders…

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Q: 30° 60° 40° B A A w = 80N W=120 N

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Q: A proton and an a-particle (with their masses in the ratio of 1:4 and charges in the ratio of 1:2)…

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Q: Three point charges q, = +2.7µC, q2 =-3.4µC and q3 = -1.6µC initially are infinitely far apart. They…

A: The work done = F.dr = KqQ/r in taking aggroup of charges from infinity to a finite distance in an…

Q: A 1⁄2 hp motor draws a current of 4.0-A from a 120-V line. (a) Calculate the electric power used by…

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Q: A long copper strip 1.8cm wide and 1.0mm thick is placed in a 1.2T magnetic field. When a steady…

A: Given: w =1.8 cm =1.8*10-2 mt = 1.0 mm =1.0 *10-3 mB=1.2 TI=15 A∆V=1.02 μV=1.02*10-6 V

Q: What is the flow rate of water (in m3/s) hose that can fill 1.75 L bottle in 5 seconds? Group of…

A: Given, Volume of water = 1.75 L = 1.75×10-3 m3 Time = 5s  Flow rate = Volume filledTime taken

Q: 10. A coiled Hookean spring is stretched 12 cm when a 1.8 kg mass is hung from it. Suppose a 5kg…

A: Given The spring stretches by x=12 cm=0.12 m when a mass of m=1.8 kg is hung from it. Another mass…

Q: 6) Consider an atomic nucleus that's moving at a speed of 500m/s. This nucleus emits an alpha…

A: Determine the mass of the new nucleus.

Q: 8. A steel wire is 1.0 m long and has a 10 kg mass suspended from it. What is the minimum diameter…

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Q: What direction does the magnetic force point? yf 'B - q, X V A) +x direction D) -x direction B) +y…

A: Given value--- magnetic field along y axis . speed along z axis .  We have to find--- direction…

Q: An electron enters a uniform magnetic field B = 0.31 T at a 41° angle to B. (Eigure 1) Figure 1 of 1…

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Q: How many kilograms of hot water (85) must be mixed with cold water (25) so that the temperature of…

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Q: An object has a volume of 4.0 m3 and weighs 40,000 N. What is the buoyant force on the object when…

A: Archimedes' Principle:The buoyant force on a fully submerged object in a fluid is equal to the…

Q: The position of an object connected to a spring varies with time according to the expression x =…

A: Given value --- x = (5.5 cm) sin(6.6 pi t). We have to find--- Find the period of this motion.…

Q: A stone is thrown straight up from the edge of a roof, 775 feet above the ground, at a speed of 12…

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Q: d styrofoam bucket contains 148 g of ice at 0 °C. If 21 g of steam at 100 °C is injected into the…

A: We know that the heat transfer from the object is given as  Q = mc∆T  where m is the mass  C is the…

Q: What is the displacement and direction of the resultant vector if a soccer player runs 55.0m at an…

A: Given: A =55.0 m  ( N 27 W)B=23.0 m (S 5 W)

Q: In a dance jump, the dancer lifts their center of mass 40 cm.  When they land, they bend their knees…

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Q: Successive positions of m, before collision Successive positions of m, after collision Vis Consider…

A: Please note : As per answering guidelines I can answer the first three parts of a multisub-part…

Q: What is the sensitivity of the RTD?

A: Sensitivity of RTD will be how much Resistance it can measure per degree celcius. If we are given…

Q: A 5.95 mm high firefly sits on the axis of, and 11.7 cm in front of, the thin lens A, whose focal…

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Q: There are 2.375 x 10^19 electrons passing through a headlight. What will be the voltage of the car…

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Q: The acceleration, a , of a particle, at time t seconds is given by: a = 4 – t/20 m/s2. This model is…

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Q: A little boy is in a treehouse, 25 feet up in a tree. He lifts a 2-lb rope that reaches the ground…

A: A) mass lifted = 2 lb height = 25 ft

Q: hat role do conductors play in modern technology?

A: Conductors are the materials which allow the free flow of electrons from themselves. For example-…

Q: A circular saw blade rotating at 3600 rpm is braked to a stop in 6 sec. What is the angular…

A: The equations of angular motion we use to solve this are ωf = ωi + αt ωf2-ωi2 = 2αθ, where ωf = the…

Q: Tell whether each pair of magnets will attract or repel

A: Required:  The nature of force between the pair of magnets

Q: When a 0.350-kg package is attached to a vertical spring and lowered slowly, the spring stretches…

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Q: Part A The 2.4 kg, 4.0-cm-diameter disk is rotating as shown in (Figure 1). What is the angular…

A: Given: The mass of the disk is 2.4 kg. The diameter of the disk is 4 cm. The angular speed is 600…

Q: Having a central charge which is 70 nC. Calculate the magnitude of the electric field at the…

A: The electric field producrd by charge 'q' at distance 'r' from the charge is given by,E = 14πε0qr2

Q: Elastic Collision BEFORE AFTER m1=1200 kg m2=1700 kg m1=1200 kg m2=1700 kg V1=12 m/s v2=0 v1=0 v2=_

A: GivenBefore Collisionm1=1200 kg, m2=1700 kgV1=12 m/s, v2=0After Collisionm1=1200 kg , m2=1700 kgv1=0…

Q: 1) An object of mass 750g drops from a height of 5.1m. What is its velocity when it reaches a…

A: Given that                      The mass of the object is(m) = 750g = 0.75kg…

Q: A sinusoidal transverse wave is traveling along a string in the negative direction of an x axis. The…

A: As per the bartleby guidelines we can answer only a maximum of 3 sub parts of a given question, so…

Q: Determine the magnitude of the torque exerted about point P by m1 m2 m3

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Q: 150 N 60 N 40 N 30 N 27. The figure above represents a stick of uniform density that is attached to…

A: Torque is defined as a twisting force that tends to cause rotation. We call the point where the…

Q: Part A A legend says that Archimedes once saved his native town of Syracuse by burning the enemy's…

A: Find the radius of curvature of a mirror that Archimedes could have used to burn ships that were 150…

Q: An object is dropped in an unknown planet from height 50 m, it reaches the ground in 2 seconds. The…

A: Given data:  Initial velocity (Vi) = 0 m/s Height (h) = 50 m Time (t) = 2 s Required: Acceleration…

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.