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a plank of mass m and length L is attached to a wall at one end as as shown. The plank rests on a support a distance D away from the wall where d < L/ 2. This configuration is known as a cantilever. What is the magnitude of the force f exerted on the plank by the wall in terms of D, m, L The force exerted on the plank by the wall is upwards. true or false.
q1. a highway curve with a radius of 555 m is banked properly for the car travelling 150 kmh. if a 1650 kg porshe 928 s
Four point charges have equal magnitudes. Three are positive, and one is negative, Calculate the ratio of the largest to the smallest net force magnitude
The speed limit for both roads is 35 mi/h, and the driver of the northward-moving vehicle claims he was within the speed limit when the collision occurred.
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. What is your reaction time
question 1 band structurecarriers in a two-dimensional 2d sample occupy a conduction band with the approximate
A ball and bat, approaching one another each with the same speed of 1.1 m/s collide. Find the speed of the ball after the collision. find the factor by which the kinetic energy of the ball increases
A star in a distant galaxy is located at a distance of 20 kpc from the center of that galaxy. What is the total mass of the dark matter in this galaxy
A bicycle and rider have a combined mass of 100 kg. How many calries of heat are generated in brakes when the bicycle comes to a stop from a speed of 36 km/h.
A golf club striking a golf ball imparts a force of2100N over a time of 5.06×10?3s at an angle of 35.0? above the horizontal. What maximum height does the golf ball achieve after impact
Two objects A and B start at the same place and move on a straight line in the same direction. what is the distance between the two objects after 3 seconds
To decrease the body temperature of a 66-kg person by 1.0 C , what mass of alcohol must be evaporated from the person's skin? Ignore the heat involved in raising the temperature of alcohol to its boiling point (why?) and approximate the human body as..
A transformer has 380 primary turns and 1220 secondary turns. The input voltage is 120 V and the output current is 15.0 A. What is the output voltage and input current
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