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A straight object of length 2.7 cm lies along the central axis of a spherical mirror with focal length 8.5 cm. The end closest to the mirror is a distance 12 cm from the mirror. What is the length of its image in the mirror?
A cubical box is filled with sand and weighs 798 N. We wish to "roll" the box by pushing horizontally on one of the upper edges. What minimum coefficient of static friction between box and floor is required
A VW Beetle goes from 0 to 60 mi/hr with an acceleration of +2.35 m/s2. Find the acceleration (in m/s2) of the dragster
Two ants race across a table 56 cm long. One travels at 4.5cm/s and the other at 2cm/s. When the first one crosses the finish line how far behind is the second one.
A 34.4-kg crate rests on a horizontal floor, and a 71.8-kg person is standing on the crate. Determine the magnitude of the normal force that the floor exerts on the crate
To warn his captain of the approaching army, a scout takes his bow and shoots a burning arrow straight vertically into the sky. What is the velocity of the arrow when it leaves the bow
The average value of the squared speed does not equal the square of the average speed. Calculate the average value of the squared speed
Starting from rest, a 4.30-kg block slides 2.00 m down a rough 30.0° incline. Determine the work done by the force of gravity
The electric potential at a position located a distance of 19.5 mm from a positive point charge of 7.70×10-9C, Calculate the value of the second charge
A vector has an x component of -24.0 units and a y component of 36.4 units. Find the magnitude and direction of this vector
The escape velocity of a bullet from the surface of planet Y is 1951 m/s. Calculate the escape velocity from the surface of planet X
The gravitational force between two electrons that are 0.97 m apart is 5.76 multiplied by 10-71 N. Find out the mass of an electron. (Use G = 6.67 10-11 N · m2/kg2.)
An electric eel develops a potential difference of 490V , driving a current of 0.85A for a 1.0 ms pulse. Find the total energy of this pulse
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