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A missile is aimed to hit a target 650 km away. If the missile is fired at an angle of 20o by the horizontal, what must be its launch speed so that it will hit the target? Once fired, how long does the missile take to hit the target?
Two narrow slits, illuminated by light consisting of two distinct wavelengths, produce two overlapping colored interference patterns on a distant screen. What is the ratio of the two wavelengths
when an object is dropped from a height of 20.0m above the surface of planet B, what is the acceleration of a falling object close to this planet
Although an ideal voltmeter has an infinite internal resistance, this theoretical ideal is usually not met in practice. The voltmeter has an internal resistance of 8 x 10^9 Ohms and is used to measure the voltage across the resistor R2.
A dampled harmonic oscillator is made from a 0.8kg mass on a k=14N/m spring with a damping constant of 400g/s, What is the energy of the oscillator after one oscillation
A heat engine operating at maximum efficiency has an efficiency of 25%. The temperature of the cold reservoir is 300 K. What is the temperature of the hot reservoir
A man looks at himself in a concave shaving mirror whose radius of curvature is 48 inches. What is the image's magnification
The measured conductivity of Cu at Room Temperature is 5.88 x 107/ohm.m and the Fermi energy for Cu is 7.03 eV, Find the mean free path( mfp) of electrons in copper
Four (and only four) full spectral orders can be seen on either side of the central maximum, find the maximum number of slits per cm for the grating
Light from a laser strikes a diffraction grating that has 5 300 grooves per centimeter. The central and first-order principal maxima are separated by 0.488 m on a wall 1.76 m from the grating.
What is the magnitude
You then kick the ball with the same initial velocity and at the same angle to the horizontal. This time, however, you kick it up a 15 degree slope. What is the horizontal range of the ball's travel
An intially uncharged 4.59-uF capacitor and a 6.63-kOHm resistor are connected in series to a 1.50-V battery that has negligible internal resistance. Calculate the circuit's time constant in milliseconds
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