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A 68.0 kilogram man throws a 0.0420 kilogram snowball forward with a ground speed of 25.0 m/s. A second man, with a mass of 59.0 kilogram, catches the snowball. Both persons are on skates. The first man is initially moving forward with a speed of 2.50 m/s, and the second man is initially at rest. Find the velocities of two people after snowball is exchanged? Disregard the friction between the ice and the skates.
thrower m/s
catcher m/s
A burglar alarm is wailing with a frequency of 1200 Hz. What frequency does a cop hear who is driving towards the alarm at a speed of 40.0 m/s
Xenon ions with a mass of 2.20×10?25 kg and charge +e are accelerated between the plates of an ion drive rocket engine to an exhaust velocity of 43,200 m/s. What is the potential difference between the plates
1 a ball is dropped from the top of a building. after 2 seconds its velocity is measured to be 19.6 ms. calculate the
question the breaking of the string most certainly plays a role in the bungee experiment. how does the length of the
You're viewing a pair of green (wavelength=550nm) butterflies on a tree branch. What is Rayleigh's minimum angle for resolution
Two speakers are driven by a common oscillator at 800 Hz and face each other at a distance of 1.25 m. Locate the points along a line joining the two speakers where relative minima would be expected. (Use v = 343 m/s).
A 2.0cm×2.0cm×6.0cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm
A guitar string produces 4 beats per second when sounded with a 350-Hz tuning fork and 9 beats per second when sounded with a 355-Hz tuning fork. What is the vibrational frequency of the string
An electric device, which heats water by immersing a resistance wire in the water, What is the resistance of the heater wire
A converging lens with a focal length of 20 cm and a diverging lens with a focal length of -70 cm are 110 cm apart. Calculate the distance between image and diverging lens
Explain the di?erences between the electron energy spectrum of β- decay and that from an internal conversion process. What are the di?erences of these two decay mechanisms?
The system is balanced by a support that is 0.300m from the left end of the plank. How far to the right of the support is the plank's center of gravity.
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