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A 3.45 g hockey puck rests on a flat, smooth table.A horizontal net force of 85.0 N acts on it for 1.10 seconds. The puck slides across the table at the end of that time and then falls off the table.The table's top surface is 85.0 cm above the deck. Find (a) the acceleration of the puck, (b) the speed of the puck after the 1.10 s, (c) the horizontal distance from the table edge to where the puck impacts the deck.
Walk 10 miles in the direction 54 degrees east of due north. How far will you be from your starting point
2000 kg elevator is accelerated uniformly from rest to 4 m/s in a time of 90s. find the change in mechanical energy of the elevator
At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distance r2 from the charge, field has a magnitude of 132N/C. Find ration r2/r1.
The only force acting on a 10.0 kg canister that is moving in an xy plane has a magnitude of 5.0 N. How much work is done on the canister by the 5.0 N force during this time
The coefficient of static and kinetic frictions between a 3.0-kg box and a desk are 0.40 and 0.30, respectively. What is the net force on the box
A cord is used to vertically lower an initially stationary block of mass M at a constant downward acceleration of g/4. determine the work done by the cord's force on the block
A grandfather clock is controlled by a swinging brass pendulum that is 1.2 m long at a temperature of 21°C. What is the length of the pendulum rod
A 1.00kg ball is at rest on the floor in a 2.10m * 2.10m * 2.10m room of air at STP. Air is 80% nitrogen (N2) and 20% oxygen (O2) by volume. What is the thermal energy of the air in the room
Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, find the electric potential energy of this system of charges
A father racing his son has 1/3 the kinetic energy of the son, who has 1/3 the mass of the father. What are the original speeds ofthe father
A stationary destroyer is equipped with sonar that sends out pulses of sound at 35.000 MHz. If the speed of sound in seawater is 1.57 km/s, find the depth of the submarine
Three 45-? lightbulbs and three 70-? lightbulbs are connected in series. What is the total resistance of the circuit
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