. An object is thrown upward to a person on a roof. At what pointis the object’s kinetic energy at maximum? At what point is thepotential energy of the system at maximum? At what locations dothese energies have their minimum values?

Q: 2R A R 3R ME a) How much work is required to move a mass m from position A (tuo Eauth radii from the…

A: Given data: Position of the point A from the centre of the earth is, 2R Position of the point B from…

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by neans of a…

A: distance moved in each stage = 13 m

Q: A worker slides a box of mass 10 kg at a constant velocity, along a flat surface. tHE WORKER IS…

A:

Q: A block attached to a spring, as shown in the Figure, starts at rest with the spring unextended and…

A: The work done by the spring is equal to the change in potential energy of the spring. Initially the…

Q: A ball tried to a light string is whirled in a perfect horizontal circle with a constant speed of…

A: Write the formula for the work done.

Q: A certain rain cloud at an altitude of 1.40 km contains 3.20 107 kg of water vapor. How long would…

A: Altitude of the rain cloud,  Mass of the water vapor,  Power of the pump,  Acceleration due to…

Q: as the vertical distance of the The potential energy of an object same object from the surface of…

A:

Q: An 82.0-kg mountain climber is in the final stage of the ascent of 4301-m-high Pikes Peak. What is…

A:

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A: Given:mass m = 64 kgdistance travelled in each step ∆h = 15m

Q: 11 When a particle moves from f to i and from j to i along the paths shown in Fig. 8-28, and in the…

A:

Q: Consider the figure [20 below: 120 N m-30.0 kg 1-5.00 N d-0.800 m Calculate the total power (in…

A:

Q: What is the work done by the weight of the 10-kg collar sliding from C (8 = 60°) to B? r = 0.3 (1 +…

A: Given, Mass=10kg K=500N/m

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A:

Q: A certain rain cloud at an altitude of 1.75 km contains 32000000 kg of water vapor. How many days…

A: The rate of doing work is called power.  Work to lift the water = m g h  where, m is the mass, g is…

Q: A certain rain cloud at an altitude of 1.75 km contains3.20 x 107 kg of water vapor. How long would…

A: Using Work-Energy theorem,

Q: A 4 kg particle has an initial velocity of (4i–3j) m/s. Some time later, its velocity changes to…

A: Mass of particle = 4 kg Initial velocity = 4i^ - 3j^ meter per second Magnitude of initial velocity…

Q: Determine the total energy (in J) stored in the system if C = 12.99 mF and the potential difference…

A:

Q: can a potential energy be negative? or it should always be positive?

A: Potential energy can be positive , zero or negative . It is a relative term which depends on…

Q: A block attached to a spring, as shown in the Figure, starts at rest with the spring unextended and…

A:

Q: When a particle rotates in a circle, a central force acts on it in the direction of the center of…

A: over a first distance of motion of the particle incircle there will be net work done , if we…

Q: A plane weighing 223 kN (22.7 tons) lands on an aircraft carrier. The plane is moving horizontally…

A: Given,

Q: "The force is inversely proportional to the cube of the distance.  It's also a conservative force."…

A:

Q: A roller coaster (M = 200 kg) starts from a maximum height of 50 meter s, goes over a circular loop…

A: The below figure represents the positions of the roller coaster .

Q: If potential energy of a system is zero does it mean that force is zero?

A: If a potential energy is zero means simply the system is in balance.

Q: In the system in the figure, find the work required to bring the loads to their positions, with q =…

A:

Q: у-ахis 5.0 m B.. A 5.0 m Fig. 1 х-ахis 91 = -0.20 µC 92 = 0.50 µC (a) Calculate the potential…

A: The electrostatic potential  energy between the two charges is given by  U = k q q'r where, q and q'…

Q: 13)? 30° P 20 8.0m An external torce F-130 Wis applied ata downward 0=30° to Surface. The force acts…

A:

Q: A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle…

A: Given :- mass of water skier = 61.2 kg initial velocity = 5.1m/s speed increases to 12.1 m/s

Q: Is it possible that the work done by a force is negative? Give an example.

A: Yes it is possible for work done by a force to be negative.If the displacement happened in the…

Q: Determine the total energy (in J) stored in the system if C = 12.66 mF and the potential difference…

A:

Q: A 2.20 x 102-g particle is released from rest at point A on the inside of a smooth hemispherical…

A: (a) potential energy at A with respect to B UgAB=UgA-UgB=mghA-mghA=mgR-0=2.20×102 g9.8 m/s222.0…

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A:

Q: A block attached to a spring, as shown in the Figure, starts at rest with the spring unextended and…

A: Work is done by the block on the spring  The work done on the spring is = 0.5*k*x2…

Q: A satellite in circular orbit around the Earth moves at constant speed. This orbit is maintained by…

A: The motion of the satellite around the earth is as shown below,   Here E represents earth, S…

Q: A raindrop with a mass of 2.50 * 10–5 kg falls vertically at a constant speed under the influence of…

A:

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A: a)  Work done by the applied force in first stage is,

Q: The moon revolves around the Earth in a nearly circular orbit, kept there by the gravitational force…

A: Work done = Fd cosθ Here, F is the force, d is displacement, θ is the angle between force and…

Q: A constant force of 10N in the positive z direction acts on a particle as it moves from the origin…

A: Since Force F is in positive z direction so F= 10i^( as unit vector in positive direction is i^) .…

Q: Find the work done in moving a particle in a force field given by F = (3xy)i - (5z)j + (10x)k. Along…

A: Given data :                     F → = (3xy)i-(5z)j+(10x)kx=t2+1y = 2t2z = t3t : 1 to 2 Formula :…

Q: what is the potential energy? a person has a mass of 60kg and walks on a rope thats 10m above the…

A:

Q: A cable with length 17m has a mass of 34kg and is hanging off of the side of a building.…

A: Given: The mass of the rope is 34 kg. The length of the rope is 17 m. The acceleration due to…

Q: A rock climber is about to haul up 60 N of equipment that has been hanging beneath her on 40 meters…

A: weight of the equipment = 60 N length of rope or distance of haul up = 40 m and rope weighs 0.4…

Q: lunar module weighs 12 metric tons on the surface of the Earth. How much work is done in propelling…

A: Given: h=80 miles Force of gravity on the surface of earth =12 metric tons. mgearth=16mgmoon…

Q: A 1.80 x 102-g particle is released from rest at point A on the inside of a smooth hemispherical…

A: Given  M =0.180 kg  R=0 .39 m  A) gravitational potential energy  U A= mgR = 0.180×9.8×.39 = 0.6879J…

Q: Which of the following requires more work? Increasing a particle's speed from 30 to 35 m/s none of…

A: The amount of energy required to change the velocity of an object is equal to the change in kinetic…

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.