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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.
While lifeguarding, Jenny is twirling a whistle in uniform circular motion next to herself (the whistle is moving in a vertical plane). Find the period of whistle while in uniform circular motion
A long cylindrical copper wire of radius 0.20 cm is surrounded by a cylindrical sheath of rubber of inner radius 0.20 cm and outer radius 0.30 cm. What will be the electric field just outside the rubber sheath
solar panels are priced based on the number of kilowatts they generate. you pay the utility an amount based on the
Explain by how much horizontal force F must a sprinter of mass 62.0 kg exert on the starting blocks to produce this acceleration?
Two very small plastic balls of equal mass are released from rest. One of them carries +10 µC of excess charge and the other one carries +1µC of charge. No other charges or fields are present. Which of the following statements are true about them as ..
A 20.4-kg boy slides down a playgroundslide that drops through a height of 2.15m. what is the boy's speed at the bottom ofthe slide
A 60 ohm resistor and a 40 ohm resistor are connected in parallel to a 120 Volt power supply. Determine the total resistance of the combination
in coming to a stopa car leaves a skid marks 92m long on th highway. assuming a deceleration of 7.0 ms squared estimate
A 3.00 kg projectile is launched from ground level traveling at 72.6 m/s and directed at an angle of 67.3° above horizontal. What is the initial velocity of the projectile in component form? What is the magnitude of the projectile's velocity when i..
A constant force changes the speed of a 76 kilogram sprinter from 3.0 m/s to 4.0 m/s in 0.45 second. Find the magnitude of the acceleration of the sprinter
a spherical drop of water carrying a charge of 20 pc has a potential of 530 v at its surface with v 0 at infinity.a
Near Neverland Ranch, there is a big beautifulpink dam. First thing in the morning of everyday, Michael Jacksonopens his window and gazes at this big beautiful pink dam. And heexclaims, “Hurray for pink, my favorite color!!”.Unfortunately, one day..
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