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A skater of mass 82.0 kg initially movesin a straight line at a speed of 5.40 m/s.The skater approaches a child of mass 39.5kg, whom he lifts on his shoulders. Assuming there are no externalhorizontal forces, what is the skater's final velocity?
A car tire is pressurized in the morning at a temperature of 200C to 2atm. By afternoon at a temperature of 350C the tire pressure has changed to 2.1atm but the volume has decreased by 2%.
A 100 meter length of steel changes temperature by 30 C during the course of a day. If the coeffcient of thermal expansion of steel is 12 parts per million per C, what is the change in length of the steel
An Escort and a Camaro traveling at right angles collide and stick together. What was the speed of the Camaro
a rotating wheel requires 7.00s to rotate 26.0revolutions. its angular velocity at the end of the 7.00-s interval
In case A, a metal bullet penetrates a wooden block, In case B, a rubber bullet with the same initial speed and mass, bounces off of an identical wooden block. Will the speed of the bullet in case B after the collision be or = of speed just before ..
an alternating rc circuit is constructed from a 331+/- 3 uF capacitor and a 15+/-.15 ohm resistor connected in series with an alternating voltage source that has a frequency of 100 Hz. Determine phase angle between the supplied EMF and the current..
A standard 100 W (120 V) lightbulb contains a 7.40 cm-long tungsten filament. What is the diameter of the filament
question1assume that you required making a pen for some small animals. you have 12 of fencing. you decide to make a
A submarine is 307 mhorizontally out from the shore and 127 m beneath the surface of the water. find the height of the building
Two snowballs are moving directly toward each other along a vertical axis. Just before the snowballs collide, Draw a before and after picture of the collision
find the velocity of the falling parachutist. assuming the initial velocity is zero the mass is 68.1kg,drag is 12.5 kg/s, gravity is 9.8m/s2 and the time is 10s
On vacation, your 1350 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 2.15 m/s2. (a) What is the net force exerted on the trailer? (b) What force does the trailer exert on the car? (c) What is the net force acting on ..
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