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A car of mass m is initially moving with a velocity v. The driver hits the brakes due to which the retarding force on the car is equal to F = -ke^(-bt). Find the time that it takes for the car to come to rest.
The random noise level of a buzzing mosquito is 32dB and that heard in a typical classroom is 71dB. How many mosquitos are required to make a noise level equivalent to that heard ina typical classroom
Furthermore, describe any differences in kinetic energy and gravitation potential energy among these balls while they hit the ground.
An aircraft with a mass of 889 kg accelerates from 0 to 95 m/s in 8.1 seconds, What is the kinetic energy of the aircraft when the aircraft launches
The electric field lines on the left have twice the separation of those on the right. If the magnitude of field at point-A is 60 V/m, what is the magnitude of the field at point-B.
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. What is the tire pressure in pascals
On its highest power setting, a microwave oven increases the temperature of 0.390 kg of spaghetti by 45.0°C in 150 s. What is its peak magnetic field strength
The magnitude of a force vector is 80.4 newtons (N). The x component of this vector is directed along the +x axis and has a magnitude of 72.6 N.
If you were to take a 60.0 cm long steel bar, and heated it to the point that it would try to expand by 0.50 mm,what is the pressure you would need to apply, to keep it from expanding
A thin-walled hollow sphere with a mass of 22 kg is rolling without slipping. Its translational speed is 1.6 m/s. Determine the total kinetic energy of the rolling sphere
How many stereoisomers are possible for CH2Cl2 provided that the central carbon has a square planar geometry
To stretch a spring 2.00 cm from its unstretched length, 15.0 J of work must be done, What is the force constant of this spring
A 40-N crate rests on a rough horizontal floor. A 12- N horizontal force is then applied to it. find the magnitude of the frictional force on the crate
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