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An electric motor rotating a workshop grinding wheel at a rate of 1.13 102 rev/min is switched off. How long does it take for the grinding wheel to stop
A dentist's drill starts from rest. After 2.90 s of constant angular acceleration it turns at a rate of 2.1 104 rev/min. Find the drill's angular acceleration
A particular satellite was placed in a circular orbit about 161 mi above Earth. Determine the orbital speed of the satellite
Chloe has a vertical velocity of 3 m/s when she leaves the 1 m diving board. At this instant, her center of gravity is 2.5 m above the water. How high will Chloe go
Sam fields a baseball hit to him in the left field. He then throws the ball to third to force out the base runner, Mike. How high in the air does the ball go
One end of a cord is fixed and a small 0.460 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m, find the tangential and radial components of
A projectile is fired with an initial speed of 65.2 m/s at an angle of 34.5 degrees above the horizontal on a long flat firing range. determine the maximum height reached by the projectile
A bucket of mass 2.00 kg is whirled in a vertical circle of radius 1.10 m. At the lowest point of its motion the tension in the rope supporting the bucket is 25.0 N. Find the speed of the bucket
A cylinder which is in a horizontal position contains an unknown noble gas at 4.63 × 104 Pa and is sealed with a massless piston. calculate the change in internal energy of the system
Find the net rate of radiation by a pot at 45.1°C that has been placed in a -24.1°C freezer. The pot\'s surface area is 0.117 m2 and its emissivity is 0.635
A feather is dropped on the moon from a height of 1.40 meters. find the time for the feather to fall to the surface of the moon
A car starts from rest and accelerates at a rate of 2m/s^2 until it reaches the speed fo 30m/s. find number of revolution each wheel completes up to this point
A roller coaster at the Six Flags Great America amusement park in Gurnee, Illinois, incorporates some clever design technology, What is the radius of the arc of the teardrop at the top
A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak
A kangaroo is capable of jumping to a height of 2.62 m. Determine the takeoff speed of the kangaroo
Rocket-powered sleds are used to test the human response to acceleration. what is the distance that the sled travels
find the maximum height reached by a body of mass 5 kg thrown with a speed of 10 m/s. take g= 10 m/s^2. find also the work done in reaching that height
A rope and two masses are suspended from the ceiling of an elevator which is accelerating downward at 2.8 m/s^2. find the tension in the rope connecting the two masses
A cannonball is catapulted toward a castle. The cannonball velocity when it leaves the catapult is 40 m/s at an angle of 37%uF0B0, What is the cannonball%u2019s impact speed when it lands
You are driving down the road at 60 km/hr when you see a chicken dash out onto the road 23.3 m in front of you. What was your reaction time
A 68-kg skater moving initially at 2.4 m/s on rough horizontal surface comes to rest uniformly in 3.52 s due to friction. What force does friction exerts on the skater
A 10 kg block of ice slides along a frictionless surface that is inclined at a 60 degree angle with the horizontal. What is the weight of the block
you throw a stone upward with an intial speed of 5.8m/s from a third-story office window. Find the speed of the stone just before it hits the ground
The length of the mercury column at the ice point and steam point are 5.0 cm and 40.0cm respectively. What is the temperature of the liquid
Bob walks up to the crate and begins pushing with 200N of force. What is the magnitude of the frictional force now