Calculate the average surface density of electrons on a sphere of radius 2.79 cm if it has a total charge of 69.1 μC. You may assume that the charge of an electron is exactly 1.60x10-19 C. Number of Electrons per m² = 4.42e16

Q: 2. A block of mass 0.25 kg is pushed against a spring of spring constant 80 N/m. It can slide…

A: mass of block m = 0.25 kgspring constant k = 80 N/mthe angle of inclination is 30oinitial…

Q: A student performs an experiment in which a fan unit is mounted on a cart that also has a friction…

A: The force exerted on the cart by the fan unit is towards the right which is trying to move the cart.…

Q: 2. Each of the following free body diagrams represents a different problem. Solve for the missing…

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Q: A small airplane flying horizontally with a speed of 123 mi/hr at an altitude of 320 ft above a…

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Q: Computation. Three blocks are connected as in the figure with m4-5 kg, mp-10 kg, mc=7 kg, and 0=4°.…

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Q: The bends during flight. Anyone who scuba dives is advised not to fly within the next 24 h because…

A: The soldier dives at a depth 21 m. The parachute is at altitude 7.5 km. The average air density of…

Q: B A coin sits on a rotating turntable as shown in the figure. At the time shown in the figure, which…

A: We need to say what the direction of friction will be on the coin on turntable.

Q: In the figure ₁ = 4.36 V, ₂ = 1.23 V, R₁ = 7.1802, R₂ = 2.232, R3 = 4.942, and both batteries are…

A: Given that E1 = 4.36 V E2 = 1.23 V R1 = 7.18 Ohms emf of a cell is positive when ever we go forward…

Q: A solid cylinder with a rotational inertia of (1/2)MR2 is released from rest and rolls without…

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Q: Write down Newton's Second Law for translation along the direction of the slope, calling this the…

A: Given Data: Friction →fs Weight →Mg Reaction force →FN Radius →R Inclination height →h Inclination…

Q: g) Now compute the torque on the loop using the standard formula ton loop = pxB, where u = iA is the…

A: Torque = μ x B μ = Magnetic moment μ = i A   Direction of magnetic moment find with help of curl our…

Q: If the Moon had three times as much mass and still orbits Earth at the same distance, ocean bulges…

A: Ocean bulges are due to gravitational force of attraction between earth and the moon. If the…

Q: 9) A spring has a constant of 875 N/m. What hanging mass will cause this spring to stretch 4.5 m?

A: Let's Consider a vertical spring of spring constant 'k' On which we hang a mass 'm'It will stretch a…

Q: 13. Calculate the magnitude of the acceleration of the asteroid, relative to the spaceship. (a)…

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Q: Two vertical walls are separated by a distance of x. The wall on the left is perfectly smooth, while…

A: Solution: Let l be the length of the board. The left side wall experience no frictional force,…

Q: Based on the image below (which takes 0.5 seconds to produce). If the wave is traveling towards the…

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Q: A7.2×102T magnetic field passos through a circular ring of radius 5.0 CIa at an angle of 24 ° with…

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Q: Two small spheres each have a mass m of 0.100 g and are suspended as pendulums by light insulating…

A: Given: mass (m) = 0.100 g angle, θ = 6° length, l = 1 m

Q: A fish with mass m and length L pivots about a point at its tail (as shown). The center of mass is…

A: given:- Center of the mass location at ''h'' Find the period of oscillation…

Q: quipotential lines in a -Vo -2V -3V (a) from A to B WAB 57.4e-6 = (b) from A to C WAC=0 (c) from A…

A: Given: Charge q = 4.1 (10-7 )C Potential v0 =140 v

Q: Find the equivalent resistance of the combination of resistors show 1.50 p2 R1 8.00 u2 R2 0.75 p2…

A: According to company policy, only 1st question will be answered here. Please post the rest…

Q: In the figure, a 2.7 g ice flake is released from the edge of a hemispherical bowl whose radius r is…

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Q: A typical "college pad" is shown below. Each component uses a power of 500 W, and a 20 Amp fuse…

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Q: A 14.2 kg sheep dog is running to the right at 1.78 m/s. A 10.7 kg collie is running to the left at…

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Q: Problem 1 Determine the type of friction force (static vs. kinetic) and the direction of the…

A: Frictional force is the force generated by two surfaces that contact and slide against each other.…

Q: of radius r rolls withou small oscillations, abc

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.