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A trailer has a mass of 1000 kilogram, and starts out traveling at 20 meter per second. The truck towing the trailer accelerates to a speed of 32 meter per second. Find how much work did the truck do on the trailer?
A horizontal spring-mass system has low friction, spring stiffness 150 N/m, and mass 0.4 kg. What is the maximum speed during the motion
A rocket that starts at rest with mass M ejects exhaust at a given speed u. What is the mass when its energy is maximum
Two boxes of mass 4.70 and 2.70 kg are in contact and are accelerated across a horizontal surface by an force of 28.24 N applied parallel to the surface and pushing on the lighter box. Find the acceleration of the two boxes
A 4.00-kg block rests between the floor and a 3.00-kg block as shown in the figure. the 3.00-kg block is tied to a wall by a horizontal rope. how many forces would we draw acting on the block
A bat at rest sends out ultrasonic sound waves at 53.5kHz and receives them returned from an object moving directly away from it, What is the received sound frequency
In a double slit experiment the separation among the slits is 0.15mm, the distance between the slits and the screen is 140 cm, the wavelength of the light utilized is 643 nm.
Light of intensity 0.5 W/m2 passes through the pupil of one of your eyes and eventually falls on your retina. how much light energy passes through in one minute
question1a robot arm that controls position of the video camera in an automated surveillance system is manipulated by a
A certain double-pane window consists of two glass sheet, each 80 cm x 80 cm x 0.30 cm, separated by a 0.30 cm stagnant air space. How much heat passes through the window each second
An exercise machine indicates that you have worked off 2.4 Calories in a minute-and-a-half of running in place. Find your power output during this time
A 10.0 kg object undergoes an accelerationof 2.1 m/s2. What is the magnitude of the resultant force acting on it? If this same forceis applied to a 8.0 kg object, what acceleration is produced?
The drawing shows a circuit that contains a battery, two resistors, and a switch. What is the total power delivered to the resistors when the switch is open
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