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In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar to that inthe figure below and has a range of 25 m. Suppose the launch speed is doubled, and the projectile is fired atthe same angle above the ground. What is the new range?
A pipe 0.0178 m in diameter and 0.16 m long can transfer 3726 J of heat per second with a temperature difference across the ends of 5?C. Compare this performance with the heat transfer of a solid silver bar of the same di- mensions by finding the rat..
Two 4.0-g spheres are suspended by 9.0-cm-long light strings. determine the electric field intensity that enables the spheres to be in equilibrium at ? = 12°
A log of mass 40 kg is dropped into river at 0°C. If the relative density of the log is 0.8, what will be the volume of the log above the surface
A ray of white light is incident on an Acrylic surface at an angleof 40 degrees. calculate the angel of refraction for the blue and redlight
A 118 g cube of ice at 0°C isdropped into 1.0 kg of water that was originally at 84°C. What is the final temperature of the water after the ice has melted
question1a fishing pole is 2.00 m long and inclined above horizontal at the angle of 20.0deg. a fish is pulling on it
You illuminate a slit of width 0.0667 mm with light of wavelength 721 nm, What is the width, in centimeters, of the pattern's central maximum
Two trains approach each other on parallel tracks. Each has a speed of 80.0 km/hr with respect to the earth. If they are initially 14.0 km apart, how long (in seconds) will it be before they pass each other?
A 43kg block of ice slides down the frictionless incline 1.50m long and 0.82m high. A worker pushes up against the ice, parallel to the incline, so that the block slides down at constant speed.
At launch, the Space Shuttle weighs 4.5 million pounds (2.04 million kilograms). As the vehicle starts from rest on the launch pad, what force must this seat exert on him during liftoff
An unknown substance has a mass of 0.125 kg and an initial temperature of 80.0°C. calculate the specific heat of the unknown substance
A radio station broadcasts at a frequency of 600,000 Hz. Know that radio waves have a speed of 3.00 x 10^8m/s, what is wavelength of these waves.
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