Ex. 125 A body cools from 75°C to 55°C in 10 min when the temperature of the surrounding is 31 °C, at what average temperature will its th rate of cooling be that at the start ?

Q: linda is a skier with a weight of 706 N.  Her skis have a mass of 6 kg.  What is the combined weight…

A: The expression for the combined weight is,

Q: A cheetah accelerates constantly from rest to catch a gazelle. The cheetah covers a distance of 40 m…

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Q: Mary applies a force of 71 N to push a box with an acceleration of 0.52 m/s². When she increases the…

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Q: A and B machine parts which are have m%3D5 kg mass each are connected. The rod

A: Given: Mass m=5kg OA=253mm=253*10-3m. AB=250mm=250*10-3m. At rest, Initial velocity of A is 0m/s.…

Q: Two blocks are connected by a light string that passes over a frictionless pulley. The system is…

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Q: While an elevator of mass 812 kg moves downward, the tension in the supporting cable is a constant…

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Q: A person pushes a 0.20 kg lunch tray across a table

A: Required : The normal force, N.

Q: Two blocks are arranged at the ends of a massless string as shown in the figure. The system starts…

A: Given m=4.36kg, M=5.77kg. Let a be the acceleration of the system. From the FBD of mass m, T - mg=-…

Q: An airplane starts from 12.7 m/s and accelerates at 7.3 m/s. What is its speed at the end of a 392 m…

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Q: T1, T2 350 35 Compute the force acting on a. Ti b. T2 24 N

A: Weight of block is W = 24 N Let T denote tension in the cable.

Q: 'art (a) Express the capacitive reactance, Xc, in terms of C and w. 78 9 ↑^^ 4 | 5 | 6 Δν, HO max b…

A:

Q: A rescue helicopter lifts a 57.7-kg person straight up by means of a cable. The person has an upward…

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Q: A woman pushes an initially stationary 11.3 kg gift up a 15.90 ramp a distance of 7.21 m. If she…

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Q: An astronaut named Johnny is driving to their rocket when they suddenly need to break. The car…

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Q: A 17 kg block rests on a 32 degree inclined frictionless surface and is attached by a light string…

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Q: Block m has a mass of 16 kg.  Block M has a mass of 88 kg.  If there is no friction between block M…

A: Mass of block m is m=16 kg. Mass of block M is M=88 kg. The coefficient of friction between block m…

Q: 1. A force F=100 N is acting on an object of mass m=10 kg. The force makes an angle of 10° with the…

A: 1. F = 100 N, m = 10 kg, θ = 10° Along x axis : F cosθ = ma Therefore, a = F cosθ/m a = 100…

Q: If Fw = 144 N shown in the figure, find FT1 and FT2.

A: The component of force FT2 are   FT2cos60 along the force FW and FT2sin60 along x axis The component…

Q: comtm8&effe Beline Collision After Collision The diagram shows the collision of two objects on a…

A:

Q: The surface of a pool table is h=0.710 m from the floor. The winner of a competition wants to know…

A: height = h =0.71 m horizontal distance = R = 4.95 m initial horizontal component of velocity = V0x=…

Q: Lisa takes her dog to the local dog park every morning. She walks with her dog 6 blocks north, 6…

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Q: A monkey is chained to a stake in the ground. The stake is 3.00 m from a vertical pole, and the…

A: Diagram of monkey-pole system is as follows:

Q: 42. A wet bar of soap slides down a ramp 10.0 m long inclined at 11.73°. What would be its final…

A: Coefficient of kinetic friction(μ) =0.06 Length of ramp(s) = 10 m θ = 11.73° and acceleration due to…

Q: You want to lift a heavy box with a mass L = 91.0 kg using the two-ideal pulley system as shown.…

A: I have written formula for finding force

Q: A 19 kg block rests on a 26 degree inclined frictionless surface and is attached by a light string…

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Q: Each propeller of the twin-screw ship develops a full-speed thrust of F = 325 kN. In maneuvering the…

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Q: QUESTION 3 Two capacitors are identical. They can be connected in series or in parallel. If you want…

A: 3. When capacitors are connected in series, the equivalent capacitance is given as,  1/ Ceq = (1 /…

Q: A woman pulls a sled with her son (total mass of 80 kg) with a force of 180 N angled at 20° from the…

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Q: A block is given an initial velocity of 5.00 m/s up a frictionless 20.0° incline. How far up the…

A: Initial velocity (u) = 5 m/sAngle of incline (θ) = 20o

Q: S 4. A 115 kg scaffold is 6.20 m long. It is hanging with two wires, one from each end. A 440 kg box…

A: