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Suppose a single piece of welded steel railroad track stretched 5000 km across the continental United States. If the track were free to expand, by how much would its length change if the entire track went from a cold winter temperature of -25 degrees celcius to a hot summer day at 40 degrees celcius?
q1. a 92 kg man standing on a surface of negligible friction shoves a 73 g stone lying at his feet giving it a velocity
A closed 2.0 liter container holds 3.0 mol of an monatomic gas. Pressure atm. Find the volume of the open container and Final temperature
In a crash test, a test car of mass 1711 kg is moving at a speed of 37.2 m/s when it crashes into a wall. how much average power (in W) is expended in this process
Calculate this temperature.
the only force acting on a 2.0 kg canister that is moving in an xy plane has a magnitude of 5.0 n. the canister
An ideally efficient airplane engine provides work as heat flows from 1400 K burned gases to 260 K air
A car is driven 225 km west and then 78 km southwest (45 degrees). What is the displacement of car from the point of origin (magnitude and direction).
a heart defibrillator is charged to 350V. It is connected to a patient's chest and allowed to discharge through the heart. After 2secs, how much charge resides on the capacitor
a 480 kg car moving at 14.4 ms hits from behind another car moving at 13.3 ms in the same direction. if the second car
On August 19,1987, Alessandro Andrei set a world record in the shot put with a throw of 22.9 m (75 ft 2 in.). What was the maximum height the projectile reached above the ground
Two protons are released from rest, one from location 1 and another from location 2. When these two protons reach location 3,, what is the electric potential at location 3
We can roughly model a gymnastic tumbler as a uniform solid cylinder of mass 70.0kg and diameter 1.00m . A) If this tumbler rolls forward at 0.550 rev/s, how much total kinetic energy does he have? B) What percent of his total kinetic energy is ro..
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