The is the electron-emitting element of a tube.

Q: In the figure, one end of a uniform beam of weight 260 N is hinged to a wall; the other end is…

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Q: A water pipe having a 2.37 cm inside diameter carries water into the basement of a house at a speed…

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Q: Two power lines, each 260 m in length, run parallel to each other with a separation of 26 cm. Part A…

A: Given: The length of each line is 260 m. The separation between wires is 26 cm = 0.26 m. The current…

Q: A cylinder contains 261 L of hydrogen gas (H2) at 0.0°C and a pressure of 10.0 atm. How much energy…

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Q: Two boxes are at rest on a horizontal table. The bottom box is pushed with a constant force (P) of…

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Q: 77. . A uniform, solid sphere of radius 5.00 cm and mass 3.00 kg starts with a translational speed…

A: To find out the sphere speed at the bottom of the ramp.

Q: Show solution with sketch

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Q: Current Attempt in Progress Two air-filled, parallel-plate capacitors are to be connected to a 10 V…

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Q: A solenoid is 3.0 cm long and has a radius of 0.50 cm. It is wrapped with 500 turns of wire carrying…

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Q: A loop of wire in the shape of a rectangle of width w and length L and a long, straight wire…

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Q: When resistors 1 and 2 are connected in series, the equivalent resistance is 18.3 Q. When they are…

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Q: carefu 4. What is g-force? coasters cause a. A pulling force b. A measure of gravity c. Something…

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Q: The values below in boxes should be written in scientific notation: 8002 x 107 -10 1000 5 J.…

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Q: 11. On which situation is the buoyant force acting on a submarine more, when it is floating at the…

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Q: olve and include the given with the required quantities and draw the diagram. A ball is thrown…

A: Given: The angle of projectile is 30o. The height of the edge is 5 m. The horizontal distance…

Q: The equivalent resistance between points A and B of the resistors shown in the figure is 35 Ω .…

A: Given data:  The equivalent resistance between A and B Req = 35 Ω R and 55 Ω are connected in…

Q: Current Attempt in Progress The drawing shows a laser beam shining on a plane mirror that is…

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Q: A converging lens is sitting 40 cm to the left of a diverging lens. An object is 50 cm to the left…

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Q: You use 1,120 Watts for 15 minutes per dinner. What will it cost you to cook your dinners for a year…

A: Power,P=1120 WattsTime,t=15 minutes or 0.25 hourprice of electricity per kwh is 5.5 cent or $0.055…

Q: A force acting on a 2.00 kg object is given by F(x) = (2.00 N/m) x + (1.00 N/m³)x³. An object starts…

A: Given value--- mass = 2 kg . F = 2x + x3 . We have to find--- speed of object at x = 2 m .

Q: A parallel-plate capacitor has a capacitance of 680 pF, a plate area of 580 cm², and a mica…

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Q: If a leaf is to maintain a temperature of 40.0°C (reasonable for a leaf), it must lose 257 W/m2 by…

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Q: A 3.5-g bullet moving at 5,000.0 m/s strikes a 15.00-kg wooden block resting on a horizontal…

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Q: At a certain point in space the electric potential is 60 V. A 8.0-μC charge is brought from infinity…

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Q: Assume Earth is approximately a uniform, solid sphere that has a mass of 5.98×10^24 kg and a radius…

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Q: When 250 nm light falls on a metal, the current through a photoelectric circuit (Figure 1) is…

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Q: A parallel-plate capacitor has a capacitance of 680 pF, a plate area of 580 cm², and a mică…

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Q: deals with the concepts that are important in this problem. As illustrated in the figure, a…

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Q: 17. A water pump is pumping up water from a well which is (a) How much work must be done by the pump…

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Q: In an experiment to find the power dissipated across R₂, a student uses the circuit shown here. 0:0…

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Q: A proton traveling at 17.9° with respect to the direction of a magnetic field of strength 3.56 mT…

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Q: The potential energy for a certain mass moving in one dimension is given by U(x) = (2.0 J/m3)x3 -…

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Q: 3.0 Ω ΜΕ 4.0 Ω 2.0 Ω ΜΕ 5.0 Ω Μ • 12 V 10 Ω (a) For the circuit shown in the figure, determine the…

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Q: Given a 10 pF air-filled capacitor, you are asked to convert it to a capacitor that can store up to…

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Q: Three charges are located as shown in the figure, with values q1 = 4.6 × 10-16 C, q2 = -1.9 × 10-16…

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Q: Compute (I bar sub y in mm4, round-off to 2 decimal places) for the region shown. -30- 12.5 -40 15…

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Q: f refractive index of

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Q: Two particles are fixed to an x axis: particle 1 of charge q₁ = 1.87 × 108 C at x = 26.0 cm and…

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Q: The top of a swimming pool is at ground level. If the pool is 2.60 m deep, how far below ground…

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Q: The horizontal force P = 85 N is applied to the upper block with the system initially stationary.…

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Q: Which expression gives the same voltage as the battery in the circuit?

A: Voltage is defined as the potential difference b/w two points.

Q: Is the equation which describes the relationship between the distance d traveled by a falling body…

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The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: