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Question1
A 350 piano slides 3.4 down a 34 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline .The valuable coefficient of kinetic friction is 0.37.
Question2
A motorist travelling at 16 m/s encounters a deer in the road 44 m ahead. If the greatest acceleration the vehicle's brakes are capable of is -6 m/s2, what is the most reaction time of the motorist that will allow her or him to avoid hitting the deer?
Answer in units of s
Question3
A computer hard disk starts from rest then speeds up with the angular acceleration of 190 rad/s^2 until it reaches its final angular speed of 7200 rpm . How many revolutions has disk made in 10 seconds after it starts up?
A 37.8 kg box initially at rest is pushed 5.27 m along a rough, horizontal floor with a constant applied horizontal force of 81.3836 N. Find the work done by the friction
A consumer upset with the latest trend of postal rate increases has decided to try to send letters by balloon even though they may not reach their intended destination
A ball is thrown horizontally from the top of a building that is 13.85 m high with a speed of 17.83 m/s. Neglecting air resistance, at what angle with respect to the horizontal will the ball strike the ground
What range is appropriate
A resistor with 790? is connected to the plates of a charged capacitor with capacitance 4.26?F, What is the electrical power dissipated in the resistor just after the connection is made
The first skater carries a 2-m pole that may be considered massless. As he passes the pole, What is the angular speed after the skaters are linked together
define How long are the skid marks. calculate the time it takes the sled to go 21 m down the slope.
In order to calibrate the strength of an Fe-55 source, many measurements of the radiation field are made with the same detector located at different distances.
For a string stretched between two supports, two successive standing-wave frequencies are 505Hz and 630Hz . There are other standing-wave frequencies lower than 505Hz and higher than 630Hz.
A dentist's drill starts from rest. After 3.50 s of constant angular acceleration it turns at a rate of 2.7 x 104 rev/min. Find the drill's angular acceleration
Two charged dust particles exert a force of 4.20 x 10^-2 N on each other. What would be the force if they are moved so they are only one-eight as far apart.
An object with mass m1=%.00kg rests on a frictionless horizontal table and is connected to a table that passes over a pulley and is then fastened to a hanging object with mass m2=10.0kg. Find out the acceleration of each object and the tension cab..
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