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A 3.3 kg block, initially in motion, is pushed along ahorizontal floor by a force F of magnitude 17 N at an angle 45degrees with the horizontal. The coefficient of friction betweenthe block and the floor is .25.
a) calculate the magnitude of the frictional force on theblock from the floor.b) calculate the blocks acceleration.
A crane weights 10500kg and the wrecking ball is 800kg. the arm of a crane can extend to a lenght of 22m. Whats the max speed of the wrecking ball
Without slowing down, she skis off the cliff and lands downhill at a point whose vertical distance is 3.50 m below the edge. Explain how fast is she going just before she lands?
A ball with a mass of 0.605 is initially at rest. It is struck by a second ball having a mass of 0.405 , initially moving with a velocity of 0.255 toward the right along the axis, What is the direction of the velocity of the 0.605 ball after the co..
A proton (mass 1 ) is shot toward an unknown target nucleus at a speed of 2.75×106 . The proton rebounds with its speed reduced by 25 while the target nucleus acquires a speed of 3.01×105 . What is the mass, in atomic mass units, of the target nucleu..
The kinetic friction force between surface and disk slows down its linear motion while at the same time making the disk spin on its axis at an accelerating rate. Finally, the disk's rotation catches up with its linear motion, and disk begins to roll ..
Vinny (m= 40 kg) is at rest on ice ( which we'll assume is frictionless) holding a gun ( m=1 kg). Each bullet in the gun has a mass of 20 grams and fires at 400 m/s. How much chemical energy was stored in the unfired bullets
A railroad flatcar is traveling to the right at a speed of 13.0 m/s relative to an observer standing on the ground. What is the velocity of the motor scooter relative to the flatcar if its velocity relative to the observer on the ground is zero
An electric force of 4.0 N exists between two objects separated from each other by a distance of r. If the distance is decreased to 0.50 r, compute the magnitude of the force between the two objects.
suppose the random variable x is continuous and has the following cumulative distribution functionfx 1 - e when
protons in an accelerator at the fermi national laboratory near chicago are accelerated to a total energy that is 400
A tank of gasoline (n = 1.40) is open to the air (n = 1.00). A thin film of liquid floats on the gasoline and has a refractive index that is between 1.00 and 1.40. What is the refractive index of the film
A 3,700-kg truck runs into the rear of a 1,000-kg car that was stationary. What was the speed of the truck before the collision
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