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On an air track, a 402.5 g glider moving to the right at 1.95 m/s collides elastically with a 502.0 g glider moving in the opposite direction at 2.90 m/s . Find the velocity of first glider after the collision. Find the velocity of second glider after the collision.
A student drops two metallic objects into a 32 g steel container holding 169 g of water at 29C. One object is a 486 g cube of copper that is initially at 58C, and the other is a chunk of aluminum that is initially at 6.9C. To the student’s surpris..
A highway is to be built between two towns, one of which lies 30.0 km south and 83.0 km west of the other. at what angle would this highway be directed
A resistor is made on a disk, allowing current to flow radially from its center to the outside. The center of the disk is a conductor producing the current with radius 0.5 mm. What is the total resistance
given an electrical circuit which consists of resistor and voltage sources, determine the current flows (i1,i2,i3, and i4) use the following values for the voltage and resistor sources: V1=20 volts V2=12 volts V3=40 volts, R1= 18 ohms R2= 10 ohms R3=..
A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 590 N. Determine the magnitude of acceleration of the elevator
A cloud of locusts having a density of 100 insects per cubic meter is flying north at a rate of 6 m/min. What is the flux density of locusts
Suppose a cannonball is fired into the air with an initial velocity of 35.0 m/s at an angle 32? above the horizontal. Ignore the effects of air friction. How far from the cannon will the second "half" land
Two different simple harmonic oscillators have the same natural frequency (f=9.50 Hz) when they are on the surface of the Earth. Calculate the new frequency of the vertical spring and mass
A LASIK vision correction system uses a laser that emits 10 -long pulses of light, each with 2.5 of energy. The laser is focused to a 0.90 -diameter circle. What is the average power of each laser pulse
A spider has a mass of 0.70-g and is hanging from rest on a 20-cm long thread of 0.0020-mm diameter of silk, If the string is whirled in a circle at a rate of 2 revolutions per second, what is the minimum and maximum time for vibrational information..
The rails are laid on a winter day when their temperature is 1.8°C. (a) How much space must be left between adjacent rails if they are just to touch on a summer day when their temperature is 32.2°C
In a physics lab experiment for the determination of moment of inertia, a team weighs an object and finds a mass of 3.38 kg. What is the moment of inertia of the object
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