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If the speed of a car is increased by 80%, by what factor will its minimum braking distance be increased, assuming all else is the same? Ignore the driver's reaction time.
An electron is confined in a box 1.0 x10^-9m in width. What is the uncertainty in its speed
Jill jumps off the diving board with a velocity of 1.7 m/s at 38 degrees above horizontal. if the water surface is 2 meters below the board: A. how long will it take for her to hit the water? B. where will she hit the water? C. with what velocity ..
The temperature of a body is increased from -173 C to 357 C. What is the ratio of energies emitted by the body per second in these two cases
A 340-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 28° with the horizontal. What is the angular speed of the sphere
the potential difference between two parallel plates is 590 v. an alpha particle with mass of 6.64 10-27 kg and charge
A uniform meter stick is freely pivoted about the 0.20-m mark. If it is allowed to swing in a vertical plane with a small amplitude and friction, what is the frequency of its oscillations
the basis of the sweep circuit used in an oscilloscope. Switch S is an electronic switch that closes whenever the potential across the switch increases to a value Vc, find the time constant for charging of the capacitor
An ambulance siren has a frequency of 440 Hz as heard by the driver. What frequency is heard by a pedestrian as the ambulance approaches him at a speed of 32.0 m/s
An electric vehicle starts from rest and accelerates at a rate of 1.7 m/s2 in a straight line until it reaches a speed of 27 m/s. The vehicle then slows at a constant rate of 1.0 m/s2 until it stops. (a) How much time elapses from start to stop? (..
IP A uniform electric field of magnitude 6 times 10^3 ;{rm{N/C}} points upward. An empty, closed shoe box has a top and bottom that are 37 cm by 28 cm, vertical ends that are 28 cm by 21cm, and vertical sides that are 21 cm by 37 cm.
In an experiment using an inclined track with a dynamics cart, the computer failed, find the cart's acceleration, mass, and the tension in the string connecting the cart to the accelerating 50g mass
two dry-ice pucks covered with plasticine are on a collisioncourse; one of the mass 467g travles south at a speed of 2.6m/s. calculate their speedand direction of travle
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