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A 100 kg man is three fourths of the way up a 10 m ladder that is resting against a smooth frictionless wall. The ladder has a mass of 25 kg and makes an angle of 60 degrees with the ground.
a. What is the normal force of the wall on the ladder?
b. What is the normal force of the floor on the ladder?
A 3.1kg block of wood sits on a table. A 3.0g bullet, fired horizontally at a speed of 370m/s, What is the speed of the block immediately after the bullet exits
A 2.96 mA beam of electrons moving at 2.09x106 m/s enters a region with a sharply defined boundary, Find the transmitted and reflected currents
A solid disk rotates in the horizontal plane at an angular velocity of 0.077 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
q1. a lawn roller is rolled across a lawn by a force of 128 n along the direction of the handle that is 16.1 above the
A 2500 kg satellite is to be launched and put in orbit at 750km above the surface of the earth. What gravitational force will the satellite experience? How fast is the Satellite traveling in orbit?
Someone throws a rock at a clock 5 meters away from them. The rock is thrown at a height of 120cm. The velocity that it reaches is 25 m/s. By how much did she miss the center of the clock
A 30 cm-diameter vertical cylinder is sealed at the top by a frictionless 15 kg piston. What will the height of the piston be
The unpolarized light of intensity I(not) is passed through two polarizers with axes oriented at 30degrees from each other. What intensity of light emerges
The drawing shows six point charges arranged in a rectangle. The value of q is 9.0 uC, and the distance d is 0.13 m. Find the total electric potential at location P
A rock is thrown vertically upward from ground level at time t = 0. At time t = 1.8 s it passes the top of a tall tower, What is the height of the tower
A movie camera has a converging lens with a focal length of 80.0 mm. What is the height of the image on the film
A motorcycle cop, parked at the side of a highway reading a magazine, is passed by a woman in a red Ferrari 308 GTS doing 90.0 km/h. After a few attempts to get his cycle started, the officer roars off 2.00 s later.
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