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The only force acting on a 3.0 kg body as it moves along the positive x axis has an x component Fx = -7x N, where x is in meters. The velocity of the body at x = 2.0 m is 11 m/s.
(a) What is the velocity of the body at x = 4.9 m?
(b) At what positive value of x will the body have a velocity of 4.2 m/s?
A 130-g baseball, moving along the x-axis with speed 29.0 m/s strikes a fence at a 45 degree angle and rebounds along the y-axis with unchanged speed. Give x and y components of its change in momentum.
A 100kg block is sitting at rest on a horizontal table. what is the force the table exerts on the block
The radius of the circular orbit is 8.92 × 106 m. Examine the magnitude of the gravitational force exerted on the satellite by the planet.
An ac generator with a frequency of 1.44 kilohertz and an rms voltage of 24.2 volts is connected in series with a 1.90 kilo-ohms resistor and a 330 mega hertz inductor. What is the average power consumed by this circuit
A tiny 0.0250 -microgram oil drop containing 15 excess electrons is suspended between to horizontally closely-spaced metal plates, Which plate must be positive, the upper one or the lower one
a police officer in hot pursuit drives her car through a circular turn of radius 300m witha constant speed of 80.0km/h. what are the magnitude and the angle relative to vertical of the net force
The ratio of the number of turns in the primary to the number of turns in the secondary of a step-down transformer is 25:1. how much power is delivered to the secondary
An undersea research chamber is spherical with an external diameter of 5.20 m. The mass of the chamber, when occupied, is 66400 kg. find the buoyant force on the chamber
A painter is using a ladder to paint the outside of a house. The ladder, which is 8.44 m long and has a mass of 23.7 kg, Calculate the net torque acting on the ladder
A solenoid of length 5.0 cm and diameter 0.87 cm is wound with 162 turns per cm. The current is decreasing at a rate of 38.0 A/s. What is the induced emf in the entire solenoid
A Carnot engine has an efficiency of 18.2%. It operates between constant-temperature reservoirs differing in temperature by 138 C °. determine the temperature of the cold reservoir
An engine absorbs 1.69 kJ from a hot reservoir at 277 °C and expels 1.24 kJ to a cold reservoir at 27 °C in each cycle. What is the power output of the engine if each cycle lasts 0.298 s
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