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During the investigation of traffic accident police find skid marks90metres long and the final velocity to be zero. They determainethat the coefficient of the friction between a car tires and theroadway to be 0.5 for the prevailing conditions. Estimate the speedof the car when the brakes were applied.
How much time would be required to stop a 2,000kg car that is moving at 80.0 km/hr if the braking force is 8,000N? If a space probe weighs 39,200N on the surface of the earth, what will be the mass of the probe on the surface of Mars?
a charged particle a exerts a force of 1.87n to the right on charged particle b when the particles are 18.49 mm apart.
A horizontal disk, with a moment of inertia of 10 kg* square meters, relative to a vertical frictionless axis through its center, What is the total angular momentum before the collision
you are the navigator of a ship at sea. you receive radio signals from two transmitters a and b which are 109.0 km
An air conditioner connected to a 120 V rms ac line is equivalent to a 14.9 ? resistance and a 1.39 ? inductive reactance in series. calculate the impedance of the air conditioner
In a series LRC AC circuit, the resistance is 19 Ohm, the inductance is 21 mH, and the capacitance is 14 micro Farads. Calculate the max current in the circuit
Two capacitors, C1 = 4.0mF and C2 = 9.0mF , are in series, Find the potential difference across second capacitor and Find the charge stored on the second capacitor
A 58.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.700 and 0.480, respectively. What horizontal pushing force is required to just start the crate moving
A person notices a mild electric shock if the current along a path through the thumb and the index finger exceeds 80.0 ?A. Calculate the maximum allowable voltage without shock across the thumb and the index finger with a dry-skin resistance of 5...
A cord is wrapped around the rim of a solid uniform wheel 0.280 m in radius and of mass 9.60 kg. Find the magnitude of the force that the axle exerts on the wheel
A freight train has a mass of 1.7 × 107 kg. If the locomotive can exert a constant pull of 7.1 × 105 N, how long does it take to increase the speed of the train from rest to 64 km/h
A narrow beam of light with wavelengths from 450 nm to 700 nm is incident perpendicular to one face of a 32.00 degrees prism made of crown glass
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