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A highway curve has a radius of 0.14 km and is unbanked. A car weighing 12 kN goes around the curve at a speed of24 m/s without slipping. What is the magnitude of the horizontal force of the road on the car?
A 6.0 cm diameter horizontal pipe gradually narrows to 4.0 cm.When water flows through this pipe at a certain rate, What is the volume rate of flow
The sun produces its power from the conversion of mass into energy by Einstein's equation E=mc2 where c=3x10^8 mls. the sun's intensity on the earth is 1346W/m^2, find the rate at which mass is being converted to energy in the sun
in the cathode ray tube in an old television set, electrons are accelerated from rest with a constant acceleration of magnitude 7.31*10^13 m/s2 during the first 2.77cm of tube's length; find the speed of the electron when they hit the screen
The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion km , is meant to orbit the asteroid Eros at a height of about 15km. What will be the period of NEAR as it orbits Eros
two uniform solid cylinders each rotating about its central longitudinal axis have the same mass of 4.90 kg and rotate
A person walks in the following pattern: 3.1km north, then 2.4 km west, and finally 5.2km south. (a) Sketch the vector diagram that represents this motion. (b) How far and (c) in what direction would a bird fly in a straight line from the same starti..
The average distance an electron travels between collisions is 2.0 μm. Find what acceleration must an electron have to gain 2.0 x 10-18 of kinetic energy in this distance
A parallel combination of an 10 resistor and an unknown resistor R is connected in series with a 13 resistor and a battery. What is the unknown resistance R
A boat that travels at the speed of 6.75 m/s in still water is to go directly across a river and back. How long does it take to make the round trip
A precious stone dealer wishes to obtain the specific heat capacity of a 0.045 kilogram gem stone. Calculate the specific heat capacity of the specimen
The emissivity of tungsten is 0.35. A tungsten sphere of radius 1.5 cm is suspended within a large evacuated enclosure whose walls are at 300 K. What power input is required to maintain the sphere at a temperature of 3000 K
A block of mass 2 kg travels along a horizontal frictionless surface with velocity 3 m/s. What impulse was delivered to mass m
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