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A heat of 4.3*10^6KJ is req to convert a block of ice at -15deg C into water at 15deg C. What is mass of ice? Spc heat of ice= 2090; of water 4186; latent heat of fusion is 33.5*10^4.
The acceleration as a function of time of a mass-spring system is given by a=(0.70m/s^2)sin[(3rad/s)t]. a)If the spring constant is 20N/m, what is the amplitude? b)What is the initial velocity? c)what is the mass of object?
A target glider, whose mass m2 is 320 g, is at rest on an air track, a distance d = 53 cm from the end of the track. A projectile glider, How much more time elapses before the gliders collide again
A person holds a ladder horizontally at its center. Treating ladder as a uniform rod of length 3.30 m and mass 7.43 kg, find out the torque the person must exert on the ladder to give it an angular acceleration of 0.405 rad/s2.
Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 2.5 cm in diameter, calculate the potential difference between its feet
As part of a safety investigation, two 1700 cars traveling at 18 are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.80 to stop, and (b) car that hits a concrete barrier and t..
Enumerate all the 2S+1LJ terms arising from electronic configuration 1s2 2s2 2p4 (Oxygen). What is the ground state of the system
A two-slit apparatus is covered with a red (643 nm) filter. When white light is shone on the filter, on the screen beyond the two-slit apparatus, how wide will that diffraction maximum be
You are standing 5 m from a tractor when the operator starts it ip the intensity is 3 x10^-5 W/m^2. How much did the sound level change
At one instant a bicyclist is 40m due east of a park's flagpole, going due south with a speed of 10m/s. Then 30.0s later, the cyclist is 40m due north of the flagpole.
How far ahead of the film should the lens be if the object to be photographed is 13 m away.
Two children pull in opposite directions on a toy wagon of mass 9kg. One exerts a force of 18 N and the other exerts a force of 46 N
Determine the binding energy of the last neutron in a 2311Na nucleus. The masses of the neutral atoms of 2311Na and 2211Na are 22.989770 u and 21.994437 u
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