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A 670-kg meteorite happens to be composed of aluminum. When it is far from the Earth, its temperature is - 15°C and it moves with a speed of 14.0 km/s relative to the Earth. As it crashes into the planet, assume that the resulting additional internal energy is shared equally between the meteor and the planet, and that all of the material of the meteor rises momentarily to the same final temperature. Find this temperature. Assume that the specific heat of liquid and of gaseous aluminum is 1170 J/kg· °C.
To develop muscle tone, a woman lifts a 4.50 kg mass held in her hand. She uses her biceps muscle to flex the lower arm through an angle of 60.0°. How much work does she do
What is the maximum distance we can shoot a dart, from ground level, provided our toy dart gun gives a maximum initial velocity of 2.78 m/s and air resistance is negligible
An electron, starting from rest, accelerates through a potential difference of 413 V. What is the final de Broglie wavelength of the electron, assuming that its final speed is much less than the speed of light
Find the minimum initial speed of a projectile in order for it to reach a height of 2135 km above the surface of the eartH
Calculate the angular momentum of the Earth about its own axis, due to its daily rotation. Assume that the Earth is a uniform sphere
a circular loop area 0.2 m2 turns in a uniform magnetic field with b0.13 t. at an instant when the angle between the
The potential equals 7.52 V at the midpoint between two point charges that are 0.95 m apart. One of the charges is 1.10 10-9 C. Find the value of the other charge.
An electron with electric charge of 1.6 x 10-19 C falls through a potential difference of 56 kV in the vacuum of an X-ray tube. What is the kinetic energy of the electron
question a student in a parked car honks the horn which has a proper frequency of 310 hz. an observer in an approaching
the mean lifetime of muons in their rest frame is 2.20us. What is the mean distance traveled before it decays
A pair of slits, separated by 0.160 mm, is illuminated by light having a wavelength of ? = 566 nm. An interference pattern is observed on a screen 150 cm from the slits. Consider a point on the screen located at y = 1.90 cm from the central maxim..
Wavelengths of light from a distant galaxy are found to be 0.5 percent longer than the corresponding wavelengths measured in a terrestrial laboratory. Determine is the galaxy approaching or receding from earth
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