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What is the total force on the bottom of a swimming pool (20m by 10m), if the pool has an average depth of 1.50 m? SHOW WORK
A wooden block weighing 7 N is at rest on top of a wooden desk. The coefficient of static friction between the block and the desk is 0.41. Find out the minimum horizontal force required to move the block if the following occurs.
If the string makes an angle of 29? with the vertical, find out the centripetal force experienced by the ball. The acceleration of gravity is 9.8 m/s2 .
A small object with a momentum of magnitude 5.0 kg m/s approaches head on a large object at rest, what is the magnitude of the small objects momentum change in kg m/s
a charged plate holds 3nC of charge equally distributed on the plates surface area. find the constant electric field near the surface of this plate
The impact with the racket gives the ball a constant acceleration over a distance of 47 cm. Illustrate what is the magnitude of the net force acting on the ball?
A particle that carries a net charge of 9.58x10^(-5)C is held in a region of constant, uniform electric field, What is the potential difference between the particle\'s initial and final positions (Vf - Vi)
Three balls are constrained to move on the circumference of a circle of radius R. find the characteristic frequencies of the system
A 1000 kg roller coaster car starts from rest from a hilltop 60.0 m above the ground and moves (without power) down, what is the average frictional force between the car's wheels and the track
A mass of 2.80 kg is attached to a single spring such that the maximum velocity of the oscillation is 2.47 m/s and period is 1.82 seconds. What is the amplitude of the oscillation
An archaeologist found a fragment bone of animal. It has an activity per gram of carbon that is 25% that of an equivalent sample of carbon from a similar living animal
A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. What is the speed of the helium nucleus after the collision
You are listening a soft music with a sound level of 50 dB. A subway train passes by whose sound level is 90 dB. What is total intensity level of the combined sound in dB.
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