Calculate the speed of a satellite moving in a stable circular orbit about the Earth at a height of 4800 km.

Q: When you have two unlike charges in a line - where is the electric field the greatest? Is there ever...

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Q: As shown below, a positively charged particle is immersed in a B-field and as a result is moving COU...

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Q: You may have observed that the electric field lines never intersect. What does this imply? Explain.

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Q: After throwing his cell phone, Vhas Thed went to the playground and saw a ball. He kicked it at angl...

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Q: The block shown is acted on by its weight W = 500 N. Horizontal force F= 300 N, and the pressure P e...

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Q: Mark Drives 45km each way to college.   He can usually drive at an average speed of 90km per hour ...

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Q: Solve this question.Show your solution. Always express the final answer in SI. At what separation i...

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Q: A car accelerates from rest at 7.55 m/s2 for 4.25 s. Determine the final velocity of the car.

A: Given data:  Initial velocity (Vi) = 0 m/s Acceleration (a) = 7.55 m/s2 Time (t) = 4.25 s Required: ...

Q: garden hose is laying on the ground while the valve is opened. The nozzle of the hose is shooting th...

A: Given  The initial speed of water spray, U = 20 m/s  Shooting water at an angle, theta = 21°  Wall i...

Q: 2.1 The viscosity of N20 is reported to be 4500 x107 Poise at 45 atm and 52 °C. Estimate the wiscosi...

A: Given that:- Viscosity at 45atm and 52°C=4500×10^-7 poise 

Q: A cloud of 〖"2.5x10"〗^19 electrons move past a given point every 2 seconds. How much is the intensit...

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Q: The Earth makes one full rotation about its axis in approximately 24 hours, or 86,400 s. It rotates ...

A: As per our guidelines we will solve first three parts for you. To get remaining parts solved please ...

Q: *1.3 PQ1 For each of the following units, list the primary dimensions: kWh noise slug cfm cSt

A: According to question we need to find unit and dimension?

Q: 4. Two charged objects with charges q; = - 500 µC and q; = - 400 µC are placed 0.50 m with each othe...

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Q: How many significant figures are there in each of the following? (a) 83.4 ± 0.9 (b) 3.4130 x 109 (c)...

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Q: Illinois Jones is being pulled from a snake pit with a rope that breaks if the tension in it exceeds...

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Q: A 3.2 kg cart was initially moving at a rate of 6.4 m/s. After colliding with a brick, the two bodie...

A: mass of cart (M) = 3.2 kg mass of brick = m Initial velocity of cart (U) = 6.4 msInitial velocity of...

Q: 5. The moment of a force about a point in 3D coordinates is solved by computing the cross product of...

A: Given: r < -0.09 , 0.16 , 0 > and  F <377 , -287 , 215> or r→ = -0.09 i^  + 0.16 j^  + 0...

Q: A ball of mass 100 g, projected at an angle of 25° from the ground with an initial velocity of 12 m/...

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Q: Problem 5: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined m...

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Q: A total charge of 6.0 mC passes through a cross-sectional area of a wire in 2.0 s. What is the curre...

A: Given data : Time=t Charge=Q   Required : Current in wire

Q: 13. (Ch 5) You are holding a book against a wall by pushing up at an angle with your hand. Your push...

A: Given: mass of book = m  angle of push = θ coefficient of static friction = μ

Q: 2. A vector has an x-component of -25.0 units and a y-component of 40.0 units. Find the magnitude an...

A: There are two different questions. According to guideline l solve only first one. 

Q: A speaker produces a beat frequency of 6 Hz with a 336 Hz tuning fork and a beat frequency of 8 Hz w...

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Q: The soldiers are in the middle of war and asking for medical supplies. As part of the Medical Team, ...

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Q: A 25 kg box is on a 35° hill with a coefficient of friction of 0.1 and an additional applied force p...

A: Mass of box, m = 25 kg Angle of hill, 35 degrees  Co efficient of friction = 0.1 Force applied upwar...

Q: 1.MaKamos is draasing a box full of books Hlom his office to his Car The box and books Hogether have...

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Q: A commuter airplane starts from an airport and takes the route shown in the figure below. The plane ...

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Q: Which of the following is false?   a. Molecules will move in 6 possible direction. Thus, it is accep...

A: Correct option is 'a'   In liquids, particles are quite close together and move with a random motion...

Q: A 2 kg frame is hung in a ceiling as shown. Fi tensions T1 and T2 in the rope.

A: givenMass of frame(m)= 2 Kg

Q: 1. Find the electrostatic force between charges of +2.0 C and +5.0 C separated by a distance of 75 m...

A: Part (1): Given: The charges are 2 C and 5 C. The separation between charges is 75 m.

Q: The period of a sitmple pendulum, defined as the time necessary for one complete oscillation, is mea...

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Q: A small sphere of charge -2.0 x 10^-4 C sits on the roof of a 5.0-kg cart as shown. The sphere moves...

A: Given: q1=-2.0*10-4 CM=5 kgq2=1.5*10-3 Cm=10 kgd=5.0 mx=2.0 m  

Q: Suppose you charge a capacitor with a 6.79 nC , and it has a potential difference of 110 V between i...

A: Given data:  Charge (Q)  = 6.79 nC = 6.79×10-9 C Potential difference (V) = 110 V Required: The capa...

Q: 2. Two charges of +8.0 mC and -6.0 mC attract each other with a force of 3.0 x 103 N in a vacuum. Wh...

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Q: The heat of fusion of a substance is 80 cal/gr, so the heat required to melt 2 kg of the substance i...

A: Given data:  Heat of fusion (Lf) = 80 cal/g Mass (m) = 2 kg = 2000 g Required: Heat (Q) 

Q: What is the relationship between the speed a car is traveling and its braking distance?

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Q: A 5-kg piece of lead (specific heat 0.03 cal/g. C) having a temperature of 80°C is added to 500 g of...

A: Given that:- Mass of lead=5kg

Q: 32. (II) A spring with k = 53 N/m hangs vertically next to a ruler. The end of the spring is next to...

A: Given, Unstretched length of the spring = 15 cm  Spring constant k = 53 N/m  Mass = 2.5 kg  

Q: A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the bl...

A: According to question we need to find--- Determine the power consumed by (a) the blow-dryer and (b)...

Q: If A 29-kg child starts from rest and slides down a slide that is 2.6 m high. At the bottom of the s...

A: Given parameters :  Mass "m"= 29kg  Height "h"= 2.6m  Final Velocity "v"= 2.5m/s .   Concept :   W...

Q: 8) A stone moves in a circle of radius 60.0 cm and has a centripetal acceleration of 90 m/s2. How lo...

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Q: A plane can travel with a speed of 80 mi/hr with respect to the air. Determine the resultant velocit...

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Q: Show the forces Along Y-axis ∑ Fy

A: Given  Mass ,M = 2 kg 

Q: An object is moving in a straight line with constant acceleration. Initially it is traveling at 16 m...

A: Given that:- Initial velocity of an object=16m/s

Q: SET B : A 4.5 TONS OF RECTANGULAR BLOCK OF ICE HAS THE FOLLOWING DIMENSIONS: 6.5 ft in length; 3.25 ...

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Q: Identify whether the following quantities are SCALAR or VECTOR. Write S if it is SCALAR or V if it i...

A: A quantity is a scalar which has only magnitude while a vector quantity has both magnitude as well a...

Q: When a certain quantity of helium gas contained inside and engine cylinder combusts, the expanding g...

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Q: Given data Charge=7 mC time=3 s Determine current

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Q: Under what condition is average velocity equal to the average of the object's initial and final velo...

A: Given that:- Average velocity is equal to the average of initial and final velocity.

Central Force

Central force is the force that acts along the center of mass of one body to the center of mass of another body. Its direction from or away from a point on a body to another is called the center of the force. Such forces include gravitational force between two massive objects or electrostatic forces between two charged particles. So from atoms to planets, the central forces play an important role in shaping our daily lives. One of the remarkable features of central forces is that they are conservative, i.e. the total energy of a central force system can always be expressed as a gradient of a potential energy function.