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Q. A race car starts from rest on a circular track of radius 455 m. The car's speed increases at the constant rate of 0.480 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, find the following.(a) the speed of the race car
Q. A curve with a 125 m radius on a level road is banked at the correct angle for a speed of 20 {rm m/s}.If an automobile rounds this curve at 30 {rm m/s}, what is the minimum coefficient of static friction between tires and road needed to prevent skidding?
Suppose you see two main-sequence stars of the same spectral type. Star 1 is dimmer in apparent brightness than Star 2 by a factor of 100. What can you conclude? (Overlook any effects that might be caused by interstellar dust and gas.)
A golf ball is struck with a five iron on level ground. It lands 92.7 away 4.10 later. What were (a) direction and (b) magnitude of the initial velocity.
The 2.00 kg object below is released from rest at the height of 5.0 m on a curved frictionless ramp. At the foot of the ramp is a spring of force constant k = 450 N/m. The object slides down the ramp and into the spring, compressing it a distance x b..
Find the Band Structure and Band Occupancy
Find the surface tension force on water inside a tube and height to which the water rises in the tube.
Establish the initial volume of the gas . What is the magnitude of normal force that each brake pad applies to the rim.
A puddle holds 150 grams of water. If .50 grams of water evaporates from the surface, what is the approx temperature altering of the remaining water.
Define proton-proton chain efficiently
A river has a steady speed of 0.42m/s. A student swims upstream a distance of 1 km and swims back to the starting point. If the student can swim at a speed of 1.25 m/s in still water, how long does the trip take.
A solid cylinder of mass 3 kg and radius 0.2 m starts from rest at the top of a ramp, inclined 15°, and rolls to the bottom without slipping. (For a cylinder I = 0.5MR2) The upper end of the ramp is 1.2 m higher than lower end. Find the linear sp..
Modeling the optical trap as a Hookean spring, evaluate the trap stiffness using the Boltzmann distribution. Determine the sphere diameter by comparing the Stokes drag and the tweezer force that balances the drag.
A metal ball with diameter of a half a centimeter and hanging from an insulating thread is charged up with 1020 excess electrons. An initially uncharged identical metal ball hanging from an insulating thread is brought in contact with the first ball,..
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