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Lead pellets, mass of each is 0.80 gram is heated to 200°C. Find how many pellets must be added to 480 gram of water that is initially at 20°C to make the equilibrium temperature 25°C? Ignore any energy transfer to or from the container.
________pellets
the electric field just above the surface of the earth has been measured to be 163 nc downward. what total charge sign
question an aircraft has a lift-off of 120kmh. a what minimum constant acceleration does the aircraft require if it is
A microscope has an objective lens with a focal length of 2.0cm, an eyepiece with a focal length of 0.25 cm, What is the magnification of the microscope
A flat circular coil with 171 turns, a radius of 5.85E-2 m, and aresistance of 0.373 Ω is exposed to an external magnetic fieldthat is directed perpendicular to the plane of the coil.
The starter motor of a car engine draws a current of 180A from the battery. How far does an electron travel along the wire while the starter motor is on
A 200 weather rocket is loaded with 100 kg of fuel and fired straight up. It accelerates upward at 30 m/s^2 for 33 s, then runs out of fuel. Ignore any air resistance effects. Illustrate what is the rocket's maximum altitude?
A major league catcher catches a fastball moving at 80.0mi/h and his hand and glove recoil 10.0 cm in bringing the ball to rest. If it took 0.00500s to bring the ball (with a mass of 300g ) to rest in the glove,
A 200g block is released from rest at a height of 25 cm on a frictionless 30 degree incline. It slides down the incline and then along a frictionless surface until it collides elastically by an 800 g block at rest 1.4 m from the bottom of the incline..
the index of refraction for red light in water is 1.331 and that for blue light is 1.340. a ray of white light enters
A 50 g ball isreleased from rest 1.0 m above the bottom of the track shown in the figure . It rolls down a straight 30 degree, segment, then back up a parabolic segment whose shape is given byy=1/4x2, where x and y are in meters.
A 1.6-m-long string fixed at both ends vibrates at resonant frequencies of 720 Hz and 960 Hz, When the tension in the string is 1162 N, what is the total mass of the string
two charges e and -e are a distance of 0.620 nm apart in an electric field e that has a magnitude of 3.55 knc and is
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