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The equation connectin s,p, and f for a simple lens can be employed for spherical mirrors, too. A concave mirror with a focal length of 8cm forms an image of a small object placed 10cm in front of the mirror. Where will this image be located?
A 0.43 kg particle moves in an xy plane according to x(t) = - 13 + 4 t - 3 t3 and y(t) = 26 + 9 t - 7 t2, with x and y in meters and t in seconds. what is the angle of the particle's direction of travel
A horse drags a 100 kg sled a distance of 4 km in 20 minutes. What is the coefficient of sliding friction between the sled and the ground
A heat engine has a maximum possible efficiency of 0.800. If it operates between a deep lake with a constant temperature of 287.0 k and a hot reservoir, what is the temperature of the hot reservoir?
An infinitely long line of charge has a linear charge density of 5.00×10^?12 C/m. How close does the proton get to the line of charge
A motor has coils with a resistance of27and operates from a voltage of242V. When the motor is operating at its maximum speed, the back emf is146V. Find the current in the coils when the motor is first turned on
A 0.55 kg- croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the average force exerted on it is 200N. If the ball's speed after being struck is 3.5 m/s , how long was the mallet in contact with the ball?
A vertical straight wire carrying an upward26-A current exerts an attractive force per unit length of 7.3×10?4N/m, What is the direction of the current in the second wire?
The pressure exerted by a static liquid on a vertical submerged surface is calculated from the reaction:
A uniform rod is attached to a wall by a hinge at its base. Determine the horizontal and vertical components of the force exerted on the rod by the hinge
A beam of thermal neutrons emerges from a nuclear reactor and is incident on a crystal. Find the Bragg- scattering angle that results in a scattered beam of this energy
A circular loop in the plane of the paper lies in a 0.63 T magnetic field pointing into the paper. What is the magnitude of the average induced emf? If the coils resistance is 2.3 ohms, what is the average induced current?
For the superball in the previous question, if it was in contact with the table for 32 ms, calculate the average force exerted on the ball by the table
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