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A particular sprinter reaches a horizontal acceleration of 13.4 m/s2 out of the starting block. The starting block is tilted such that the vertical component of the force which the starting block exerts on the sprinter compensates for the weight of the sprinter, leading to a zero vertical acceleration. What is the magnitude of the force with which the 63 kg sprinter pushes against the starting block? only those who will show the work clearly will get the extra bonus points.
An egg rolls off a kitchen counter and breaks as it hits the floor. How large is the impulse that the floor exers on the egg, and how large is the force exerted on the egg by the floor when stopping it? The counter is 1.0mhigh, the mass of the egg is..
A 30 charge is moved from a point where = 150 to a point where = -70. How much work is done by the force that moves the charge
A postal worker pushes a 160 N bag of mail up a 31 degree ramp at a constant velocity. The ramp exerts a frictional force of 30 N on the bag. What is the magnitude of the worker's push
a 1000 kg aircraft going 25 ms collides with a 1500 kg aircraft that is parked and they stick together after the
A 76 kg window cleaner uses a 13 kg ladder that is 5.0 m long. He places one end on the ground 3.0 m from a wall, What is the angle of this force on the ladder
What is the distance (in mm) separating the violet (lambda = 400nm) in the first-order band from the red (lambda = 600nm) in the second order.
A 31.0-kg crate rests on a horizontal floor, and a 72.5-kg person is standing on the crate. Determine the magnitude of the normal force that the crate exerts on the person
The average intensity of sunlight reaching the earth is 1390 W / m2. A charge of 2.00 x 10^-8 C is placed in the path of this electromagnetic wave. What is the magnitude of the maximum electric force that the charge experiences
A snow mibile is pulling a large sled across a snow-covered field. The weight of the sled is 3560 N. If the coefficient of friction of the sled is 0.12,
question a 40.2 l constant-volume cylinder containing 2.21 mol he is heated until the pressure reaches 4.20 atm. what
The bullet becomes embedded in the block. if the coefficient of kinetic friction between the block and surface is .65 what was the speed of the bullet at once before impact.
What is the magnitude of the force on an electron at a distance of 3.86 Angstrom from the thorium nucleus? What would the magnitude of the force be if the distance of the electron from thenucleus were doubled?
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