Calculate, how fast you were going in meters per second when you ran the red light because it appeared Doppler-shifted green to you. Take red light to have a wavelength of 600 nm and green to have a wavelength of 500 nm

Q: An electric bulb, rated at 100 W 230 V, is connected to source of 230 V AC mains. The bulb is lighte...

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Q: Answer the following questions about a convex lens and the Lensmaker’s equation, which is used to de...

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Q: If a scaled drawing represents objects as 1/16 of their actual size, then an object that is 75.2 met...

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Q: A magnetic field goes through a loop of wire as shown below (x = into the page). If the strength of ...

A: Induced current : It is induced in the loop when there is a change in the magnetic flux of the loop....

Q: 10. A car is slowing down from the initial velocity of 19.3 m/s to 6.3 m/s. It took the car 5.2 seco...

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: 1) When you rub one material, such as a balloon, againt another material, such as your hair, electro...

A: When charges transfer from one body to other body, the phenomena is called static electricity. Like ...

Q: In the winter, cold air is brought into homes and is heated. How does the relative humidity of that ...

A: Relative humidity is the measure of amount of water vapor present in the air ( in percentage).  It i...

Q: The diagram below shows a 9.8-newton cart being pulled 0.50 meter along a plane inclined at 15° to t...

A: Force of cart ( W ) = 9.8 N  Vertical distance ( s ) = 0.5 m   

Q: A body has a mass of 50 kg. Its velocity is brought down from 20 m/s to 5 m/s by a resisting force i...

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Q: A +2.00 nC point charge is at the origin, and a second -5.00 nC point charge is on the x-axis at x =...

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Q: A golfer is on a hill, 17 m above the ground. She hits a golfball from the hill at 11.7 m/s, 42° abo...

A: Given data: The initial speed of the ball is u=11.7 m/s. The angle above horizontal is θ=42°. The h...

Q: ball is thrown upward at an angle with a speed and direction such that it reaches a maximum height o...

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Q: A cart which has a mass of 20 kilograms slides down a frictionless slope of a hill. If the cart star...

A: Given value--- mass = 20 kg. speed at bottom = 15.6 m/s. We have to find --- height?

Q: - A bullet which has velocity 150 m/s and mass 4 kg sticks to the stationary block. They together af...

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Q: of 60 degrees from the horizontal. What is the horizontal

A: Given  Initial velocity is v_o=4.7 m/a Angle of projection is theta =60 °  

Q: Consider the circuit shown in the figure, where ɛ, = 22.7 V, E, = 12.3 V, and R = 14.0 Q. (Due to th...

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Q: An electron is projected with an initial speed of 4.6 m/s directly toward a proton that is essential...

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Q: A player kicks a football at an angle of 35° with the horizontal and with an initial velocity of 14....

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Q: Displacement vector A is 4.5 km, north. Displacement vector B is 3.0 km, 50 north of west. Find the ...

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Q: A coil of inductive reactance 31 2 has a resistance of 8 2. It is placed in series with a condenser ...

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Q: Imagine a hypothetical string with length 1m and fundamental frequency of 100 Hz. Find the fundament...

A: Given data: First length l1 = 1 m Fundamental frequency f1 = 100 Hz Second length l2 = 0.4 m  

Q: 3: What is the magnitude and direction of the electric field produced by a source charge q= -1 X 10 ...

A: Answer:-  Answer(3) :- (c) 9 pointing to the right of the field point. Given  Charge of source (q) =...

Q: An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon take...

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Q: Find the quantum number corresponding to the excited state of He* , if on transition to the ground s...

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Q: A 265-kg load is lifted 18.0 m vertically with an acceleration a = 2m/s by a single cable. 1. Dete...

A: Draw the free-body diagram of the load.

Q: 2.46 Calculate the pressure increase that must be applied to wa- ter to reduce its volume by 2%.

A: Given data -                             reduction  in the volume = △VV = 2% , here (V = original vo...

Q: Two oppositely charged particles of 2.2 x 10-5C are placed at diagonally opposite corners of a squar...

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Q: The electric potential energy due to several point charges is given by the equation: U=kIqi/M. The r...

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Q: A whistling train travels past a person standing still. The height of the tone of the whistle sharpl...

A: Let the original frequency of whistle = f The velocity of train (v) = 60 kmhrThe velocity of sound (...

Q: Consider the circuit 7 2 ww 13→ 4 V ww- 12 6 V 10 V 3 2 ww ww Find i1. Answer in units of A.

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Q: An infinitely large charged plane sheet has a uniform charge distribution as shown in the figure bel...

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Q: 2.25 The dynamic viscosity of nitrogen at 59°F is 3.59 x 107 Ibf · s/ft². Using Sutherland's equatio...

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Q: A force of 50 N stretches a spring in the figure by 200 mm. (a) What is the spring constant k? (b) W...

A: We use the relations F=kxE=12kx2

Q: Which of the following accurately depicts charging by induction?

A: Induction charging is a method used to charge an object without actually touching the object with an...

Q: A block slides down a frictionless inclined ramp. If the ramp angle is 17.0° and its length is 30.0 ...

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Q: Two cars, A and B, are travelling in the same direction, although car A is 183m behind car B. The sp...

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Q: A traffic light is suspended using cables as shown in the illustration above. Let the mass of the tr...

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Q: What is the magnitude of the strength of the electric field between two parallel conducting plates w...

A: Given: V=10,000 V = 104 Vd = 2.00cm =2.0*10-2 m

Q: Please answer in complete solution. With given and formulas used.  Question: In 2.0 s, 6.25 x 1018 ...

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Q: Two concentric spherical surfaces A and B are equipotential surfaces for a positive charge +q placed...

A: a) As the surfaces are equipotential, so they will not interact on +Q or the charges that will be in...

Q: When moving from infinity to towards a negative point charge, the electric potential. select the let...

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Q: A 12.5 V battery operates a 14.2 ohms flashlight intermittently for a cumulative time of 65.3 min. W...

A: Given V = 12.5 Volt  R = 14.2 ohm  Time t = 65.3 min = 65.3 × 60 sec  =3918 s 

Q: Relate how surface tension is manifested in water showing water strider walking in the  surface of a...

A: The surface tension in water is due to the Newton's Third Law. Every action have equal and opposite ...

Q: The x- and y- components of a displacement vector are -7.00 m and 8.00cm, respectively. What angle d...

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Q: A charge of 5.0 µC exerts an attractive force of 10.0 N on an unknown charge 30.0 cm away. What is t...

A: Coulomb's law : The force of attraction or repulsion between two charged bodies is directly proporti...

Q: Use the reflection rules for convex mirrors to draw rays from the object (dark blue) to the image (w...

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Q: A sphere having a diameter of 10 cm is completely submerged in water. What is the buoyant force on t...

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Q: The rectangular surface in the figure below is in a uniform electric field region with strength of 4...

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Q: A cannonball was launched at an angle of 15° with an initial velocity of 25 m/s. What maximum height...

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Q: The refractive index of glass is 1.5. What is the speed of light in glass? (Speed of light in vacuum...

A: refractive index of glass =η =1.5 speed of light in vacuum = C = 3 X 108 m/s speed of light in glass...