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An airplane travelling 76.5 m/s at 25.5° below the horizontal when it drops off a package. If the horizontal distance between the point of release and the point at which the package hit the ground is 685.0 m, how long was the package in the air? How high was the plane when it dropped the package?
At 19°C, a rod is exactly 18.07 cm long on a steel ruler. Both the rod and the ruler are placed in an oven at 250°C, What is the coefficient of thermal expansion for the material of which the rod is made
If you drop an aspirin and it takes 0.18 sec to hit the table, how high above the table was the aspirin when it released?
Two strings are vibrating at the equal frequency of 234 Hertz. After the tension in one of the strings is decreased, Obtain the new frequency in the adjusted string
A setup similar to the one shown in the figure below is often used in hospitals to support and apply a horizontal traction force to an injured leg. (Let m = 6.05 kg and ? = 81.0°.) What is the traction force exerted to the right on the leg?
Consider a 7 solar mass main sequence star, Estimate its luminosity in solar luminosities and how long (in years) it could maintain its luminosity through gravitational collapse
The temperature outside a house is -20-C and inside it is 20-C. What is the ratio of the density of the outside air to the density of the inside air? Would inflltration, which results from cracks around the windows, doors, and siding, etc., occur ..
A piece of Nichrome wire has a radius of 7.2 x 10-4 m. It is used in a laboratory to make a heater that dissipates 3.30×102 W of power, estimate the necessary length of wire
When they release their arms, Al moves off in one direction at a speed of 0.689 m/s, while Jo moves off in the opposite direction at a speed of 1.10 m/s. Assuming that friction is negligible, find out Al's mas
two point charges lie on the 10.4cm axis. a charge of 9.8 x 10-6 c is at the origin and a charge of -4.6 x 10-6 c is at
What is the temperature of the junction point?
A rock is thrown vertically upward with a speed of 17.0 m/s from the roof of a building that is 70.0 m above the ground. Assume free fall. A) In how many seconds after being thrown does the rock strike the ground? B) What is the speed of the rock ..
A sports car traveling at 24.7m/s slows at a constant rate to a stop in 16s. What is the displacement of the sports car in this time interval
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