A heavy weight can be lifted by using simple machines such as pulley system by applying a small force. Does this mean that less work is done by using a simple machine than if the weight had been lifted directly? Explain.

Q: What is the highest and the lowest total resistance that can be secured by combinations of four…

A:

Q: A laser resonator consisting of two mirrors with reflectivity R1=1 and R2=D0.95 respectively,…

A: Given: R1 =1 R2 = 0.95  effective medium length = 0.1 m spontaneous emission lifetime 10-6 sec  A…

Q: A 45.0 kg skater is skating down a hill on roller blades at à špêed of m/s. What is the kinetic…

A: Given data : Speed=V Mass=m   To find : Kinetic energy of skater

Q: A 0.7-F capacitor is connected in series with a 9-ohm resistor. If the connection is energized from…

A: Given that,capacitor : C = 0.7 (F)Resistor : R = 9 OhmDC Voltage : V = 11 (V)Here we need to find…

Q: If Seneca decides to walk across town to a store that is 85 kilometers away and she has only 30…

A: Given data :             Distance = d              Time  = t       To find  :               Speed

Q: proton moves with speed of 4x106 m/s normally to magnetic field of 3 T. The magnetic force is equal…

A: Given data: Speed (v) = 4×106 m/s Angle between velocity and magnetic field (θ) = 90° Magnetic field…

Q: 9. The system can be considered 1 because The statement above is best completed by the answers in…

A:

Q: 1. Image that two particles, a proton and an electron, are confined to move on circular rings of…

A: Here by conservation of angular momentum we have L=Iw where I is the moment of inertia and w is the…

Q: Caleulate the eommule 1. 7. X. andd

A: a) x, L2=x, Lx2+LY2+LZ2            =x, Lx2+x,Ly2+x,Lz2            =x, LxLx+Lxx, Lx+x, LyLy+Ly[x,…

Q: (255) A flat circular, steel loop of radius 0.5 m is at rest in a uniform magnetic field at an angle…

A: Given, Radius of the circular loop, r=0.5 m The magnetic field,

Q: Q6 A rod of length L has a uniform positive charge per unit length A and a total charge Q. Set up an…

A: Given that: The rod length is L The total charge is Q.

Q: For the figure shown, calculate the x-component of the centroid (x). (0,6) y=6-x (4,2) (0,0) (4,0)

A: take an element of thickness dx at a distance x from origin  Now, mass of element (dm)= kydx =…

Q: A 18 cm disk in radius is originally rotating at wo = 11 rad/s. If it is subjected to a constant…

A: Given that,The radius : r = 18 (cm) = 0.18 (m)Angular speed : ω0 = 11 (rad/sec)Angular acceleration:…

Q: Selve the below aquation ८. ईo0 201-21a1) |12 by using creation inhallation Eg=hw (3) 4. Answer is

A: En= hω40a+a+40also, we know a n>=nn-1>a+ n>=n+1n+1>a+a+4 can be written as…

Q: In an RC series circuit, emf = 12.0 V, resistance R= 1.21 MO, and capacitance C= 1.87 µF. Find the…

A: The maximum charge that will appear on the capacitor during charging. Given, emfε=12.0…

Q: the sum is

A: Given: 2.0347 is added to 15.7,  Then the sum is?

Q: total magnification of this lens syStatement is;

A: Given: An extended object is placed at point  O,  10 cm in front of a convex lens L1 and a concave…

Q: Problem 3 (a) Calculate the value of the first integral below for a 2p, orbital for a hydrogen atom…

A: The radial part of the wave function i.e. R(r) of the electron in 2px orbital of the hydrogen atom…

Q: .. A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long.…

A: Work done, W = F.d

Q: Three objects are connected on a table as 1.00 kg shown in the figure. The rough table has a…

A:

Q: 5. A 5-kg mass is attached to a spring whose stiffness constant is 80 N/m. The damping is…

A:

Q: Blocks A, B, and C are placed as in the figure below and connected by ropes of negligible mass. Both…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: As indicated in the diagram below, a physicist sets up an experiment to determine the mass of a…

A:

Q: A 26kg red curling stone sliding at 0.81m/s hits a 20kg blue curling stone which is sitting still.…

A: Given that,Mass of red curling stone : mr = 26 (kg)Mass of blue curling stone : mb = 20 (kg)Speed of…

Q: A point source S emitting light of wavelength 600 nm is placed at a very small height h above a flat…

A: We are aware that a point source S is positioned at a very low height h above a flat reflecting…

Q: event slipping. What frid

A: Given Data The weight of the car is:m=4000 lb=1814.36 kg The speed of the car is:v=30 mph=13.41 m/s…

Q: I just need help solving H and I

A: We will find the minimum and maximum temperatures.  The efficiency of Carnot engine is given as…

Q: Q. A particle is contained in a two- dimensional square box with infinitely hard walls. The…

A: Let us calculate the part a of the question, i.e. to find the normalized wave function for a 2-D…

Q: 33. M CHALK MMH A car is traveling at 20.0 m/s, and the driver sees a traffic light turn red. After…

A:

Q: In the figure, a force F is being applied to the block with a magnitude such that it moves up along…

A:

Q: A flat coil enclosing an area of 0.19 m2 is rotating at 55 rev/s, with its axis of rotation…

A: Given that,Area = 0.19 (m2)The speed of coil : v = 55 9rev/sec)magnetic field : B = 0.17 (T)Number…

Q: Wire is welded to form a circular loop and kept in plane as shown. Now it is made to rotate with…

A:

Q: Caleulate Hhe Com mutatos

A:

Q: G. State two common tests used to determine mechanical properties. H. Briefly explain the…

A: G)Tensile testing  and compressive testing are two common tests used to determine mechanical…

Q: St. Jos ERO ESIZO (250)

A: CONCEPT: Work is the term which describes the amount of energy transferred when it is moved over a…

Q: is given by: (-4 + 2t2 + 1001 + 5) rad The magnitude of the angular velocity (in rad/s) of this body…

A:

Q: Consider the finite difference grid shown in the figure below that is expressed in the polar…

A: Concept used: Polar co-ordinates specify location in angular motions.

Q: End Commutation velationship of positiom and Hamiltonian operadtor %3D

A:

Q: Determine the distance covered by a body in 4 s if it initial velocity is 20 m/s and the…

A: Given data The time interval is given as t = 4 s. The initial velocity of the body is given as u =…

Q: A charge q = 2.3 µC is placed at the point P shown below. What is the force on q (in N)? (Assume the…

A: Given that,Charge q1 = 1.7 (μC)Charge q2 = -3.7 (μC)Charge q = 2.3 (μC)Distance between charge q1…

Q: Mass-40 kg Density=1300 kg/m3 Find volume

A: Given data:  Mass (m) = 40 kg Density (ρ) = 1300 kg/m3 Required: Volume (V)

Q: A 0.0331-kg bullet is fired vertically at 191 m/s into a 0.158-kg baseball that is initially at…

A: Given that,Mass of bullet :m1 =0.0331 (kg)Mass of bullet :m2 =0.158 (kg)Initial velocity of the…

Q: A tennis ball is tossed vertically upwards and travels a distance of 6.5 m in 1.2 seconds. What was…

A: Given that,Distance : d = 6.5 (m)Time : t = 1.2 (sec)Acceleration : a = -g = -9.8 (m/sec2)Here we…

Q: An electric motor lifts a mass of 500 kg from the ground to a height of 30 m in 1.5 minutes.…

A: