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Q1. A 52 kg person escapes from a burning building by jumping from a window 50 m above a catching net. Assuming that air resistance exerts a 95 N force on the person during the fall, determine the person's velocity just before hitting the net.
Q2. A plano convex lens of focal length 16 cm is fixed on the side of the box with convex surface outside an object is placed at 26 cm from the lens find the position of the image while (1) the box is empty (2) field with water.
At a temperature of 5800, hydrogen atoms in the solar atmosphere have typical random speeds of about 12. Assume that spectral-line broadening is simply the result of atoms moving toward us or away from us at this random speed, estimates thermal width..
Ultrasound probes can resolve structural details with sizes approximately equal to the wavelength of an ultrasound waves themselves. What is a size of the smallest feature observable in human tissue while examined with 25 MHz ultrasound? The speed of..
How much energy is given to the cell during this pulse. How many years would it take the earth to move 1.0 mm at this speed.
What is wavelength in meters of an electron
How long did it take the apple to hit Newton after falling off? Draw a graph of velocity vs
Chromium is produced by reacting its oxide with aluminium. If 354 g of Cr2O3 and 158 g of Al react to form 204 g of Al2O3, how many grams of Cr are formed.
The magnitude of the vector is 45.0 units and points in the direction 386 counter clockwise from the positive x-axis. Calculate the x-component of this vector.
A 20 kg block is stacked on top of the 20 kg block. Both blocks are glued together. What is the magnitude F of force, acting horizontally on the two blocks, that is required to make the two blocks start to move.
A rifle with the barrel length of 62cm fires a 12g bullet with a horizontal speed of 380m/s. The bullet strikes a block of wood and penetrates to a depth of 14cm. What resistive force (assumed to be constant) does the wood exert on the bullet? How lo..
What is the turntable rotation angular velocity
What are angles of refraction
Find out the induced emf in the loop at an instant
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