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The coefficient of static friction between the tires of a car and a horizontal road is 0.495. As the car brakes, what is the magnitude of the maximum acceleration of the car? Assume the net force on the car is the maximum static friction force.
What is the minimum distance in which the car can stop if its speed is 19.0 m/s before the brakes are applied?
a plastic bag is filled with helium at atmospheric pressure and 23.0 oc. assume that the mass of the bag is negligible
A small 12.3 g plastic ball is tied to a very light 28.6 cm string that is attached to the vertical wall of a room, Find the magnitude and direction of the electric field in the room
A uniform metal rod, with a mass of2.9kg and a length of0.9m, is attached to a wall by a hinge at its base. Find the horizontal component of the force exerted on the rod by the hinge
the movable mirrror in a michelson interferometer is displaced to give an interferogram with 1000 local maxima. if the
An arteriole has a length of 1.25 mm and a radius of 21.9 ?m. The blood pressure drop along the arteriole is 1310 Pa. Calculate the resistance of the arteriole
Oxygen gas having a volume of 1.00 liter at 40.0 celsius and a pressure of 1.00 atmosphere expands until its volume its 1.50 liters, FInd the number of moles of oxygen
how much time passes before the brick lands on the ground. If the wind speed is 26 mph, find the velocity of the plane in still air.
A 16.5 kg gold bar at 26.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C
A large parallel plate capacitor has plate separation of 1.01 cm and plate area of 231 cm2. How much work is done on the capacitor as the plate separation is increased to 2.02 cm
A massive steel cable drags a 25-kg block across a horizontal, frictionless surface. A 90.0 N force applied to the cable causes the block to reach a speed of 4.5m/s in 1.5s. What is the difference in tension between the two ends of cable.
A 75-kg piece of metal has specific heat 430 J/kg°C and is initially at 950°C. To cool it down, it is dunked into 710 kg of oil that has a temperature of 32°C and specific heat of 2700 J/kg°C. Assuming that heat flows only between the oil and the m..
Two different elements with half lives Ta and Tb have Na & Nb (undecayed) atoms respectively, Determine the ratio of their activities at this instant
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