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A vertical container with base area of length L and width W is being filled with identical pieces of candy,each with a volume of v and a mass m. Assume that the volume of the empty spaces between the candies is negligible. If the height of the candies in the container increases at acertain rate per unit time , at what rate per unit time does the mass of the candies in the container increase?
If an object of 50 grams of unknown material at 100 degrees C is mixed with 100 grams of water at 0 degrees C, the final temperature is 40 degrees C
At the start of his race, an 84-kg runner pushes against the starting block, Determine the horizontal speed of the runner after the force is exerted for 0.32s
An electron and a proton are each placed at rest in a uniform electric field of magnitude 564 N/C. Calculate the speed of each particle 44.4 ns after being released.
A solid marble, a solid disk and a hoop have the same mass (M = 0.9 kg) and the same radius. Each object is held at rest at the same height and then released. what is the force the track exerts on the disk when released at the minimum height
A projectile is fired straight upward from Earth's surface with a speed that is 0.816 times the escape speed. what is the highest altitude reached measured from the surface of the Earth
An ideal gas at 20 C consists of 2.2 X 10^{22} atoms. 4.3 J of thermal energy are removed from the gas. What the new temperature in C.
Point charges q1=? 4.10nC and q2=+ 4.10nC are separated by distance 3.20mm , forming an electric dipole, What is the direction of the dipole moment
A long solenoid has 231 turns in a length of 13 cm, radius of 1.8 cm, and I= 1.3 A. Find the magnitude of the average induced emf in the coil
A stretched string fixed at each end has a mass of 40g and alength of 8.00m. The tension in the string is 49.N, What is the vibration frequency for this harmonic
An automatic dryer spins wet clothes at an angular speed of 4.2 rad/s. How long does it take the dryer to come up to speed
An engine is built to extract power from the temperature difference in the ocean. what is the maximum theoretical efficiency of such an engine
A uniform magnetic field is at right angles to the plane of a wire loop. what is the area of the loop
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