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A 3kg ball traveling to the right with a speed of 4 m/s collides with a 4 kg ball traveling to the left with a speed of 2 m/s. The total momentum of the two balls after the collision is
20 left
20 right
4 right
zero
Sixty-seven million years ago, a large asteroid impacted Earth. It is widely accepted in the field of paleontology that this impact played a large role in a mass extinction that included all dinosaurs, find the change in the angular velocity of th..
A carbon sample of the same size taken from a fresh piece of bone emits 16 beta emissions a minute. How long ago did the saber-tooth tiger live?
At what frequency would a 5.4 mH inductor and a 14 ?F capacitor have the same reactance? What would be the natural frequency of an oscillating circuit with the same L and C
The current supplied by a battery in a portable device is typically 0.131 A. Find the number of electrons passing through the device
suppose a diode consists of a cylindrical cathode with a radius of 6.200times10-2 cm mounted coaxially within a
The position of an object connected to a spring varies with time according to the expression x = (5.8 cm) sin(9.5?t), Find the period of this motion
an archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.20 ms on a smooth
A hard disk in your computer spins at 5400 rpm. if this disk turns through 12 revolutions before coming to a stop, find the disks angular acceleration
A 1400 kg car enters a passing zone and accelerates from70km/h to 95 km/h to pass a slower car. How much work must be done on the car
One day the brakes fail just as the cable car leaves the top on its downward journey. What is the runaway car's speed at the bottom of the hill
A planet's moon travels in an approximately circular orbit ofradius 7.0 x 107 m with a period of 6 h 29 min. Calculate the mass of the planet from this information
A woman holds a tube of lipstick 7.5 cm from a spherical mirror and notices that the image of the tube is inverted, Calculate the focal length of the mirror
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