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On a highly polished, essentially frictionless lunch counter, a 0.410 submarine sandwich moving 2.90 to the left collides with a 0.260 grilled cheese sandwich moving 1.05 to the right.
a) If the two sandwiches stick together, what is their final velocity?
b) How much mechanical energy dissipates in the collision?
A 60.0 kg person running at an initial speed of 3.25 m/s jumps onto a 120 kg cart that is initially at rest. Find the final speed of the person and cart relative to the ground
An airplane traveling at half the speed of sound emits a sound of frequency 5.45 kHz. At what frequency does a stationary listener hear the sound
A radio antenna broadcasts a 1.0 MHz radio wave with 28 kW of power. What is the electric field amplitude at this distance
q1. a 1035 kg car carrying four 78 kg people travels over a rough washboard dirt road with corrugations 5.0 m apart
A car speeds past a stationary police officer while travelling 115km/h. The officer immediately begins pursuit at a constant acceleration of 10.20 km/h/s (note the mixed units), just as the driver passes the officer.
As morning sunlight falls on a tethered helium balloon, it expands from a volume of 1.10 cross 103 m3 to a volume of 1.17 cross 103 m3. how much does the helium's internal energy increase
A 23 kg box slides 4.0 m down the frictionless ramp shown that is raised 30 degress from the ground , What is the maximum compression of the spring
what is the total amount of work done by friction. The supplies should be dropped how various seconds before the plane is directly overhead.
A stone takes 0.28s to travel past a window 2.2m tall. From what height above top of the window did the stone fall?
During a stage production of Peter Pan, the 53.5 kg actress playing Peter has to fly in vertically (descend). Calculate the tension in the wire supporting the actor
When a car's starter is in use, it draws a large current. The car's lights draw much less current. As a certain car is starting, What is its internal resistance
A certain EM wave has a wavelength of 4 X 10 ^-7 m and a speed of 2.5 X10^8 m/s in a partcular material ( not a vacuum). what is the wavelength of this wave in a vacuum
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