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Q1. The human heart discharges 75ml of bloodat each beat against a pressure of 0.1m of Hg(mercury).Calculatethe power of heart assuming that pulse frequency is 80 beats perminute.Density of Hg = 13.6*103 Kg/m3
Q2. A ball is dropped to the ground from a height of 2m. Thecoefficient of restitution is .6.To what height will the ball rebound?
In the field of psychology, what is meant by the term “catharsis”? According to Joseph Bruer, Illustrate what effect did “catharsis” have on the mental functioning of someone with a “troubled mind”? Why?
Two long, parallel wires, each with the mass per unit length of 43 g/m, are supported in a horizontal plane by 6-cm long strings. Each wire carries the similar current, I, causing the wires to repel each other so that the angle, θ, between the sup..
A boy runs 3.00 blocks north, 4.00 blocks northeast, and 5.00 blocks west. Determine the length and direction of the displacement vector
A sailboat leaves a harbor and sails 1.1 km in the direction75 degrees north of east, where the captain stops for lunch. Ashort time later, the boat sails 1.8 km in the direction 15 degreessouth of east. What is the magnitude of the resultant disp..
A sample of an unknown material appears to weight 300N in air and200N when immersed in alcohol of specific gravity 0.700. What are(a) the volume and (b) the density of the material?
A proton initially at rest is accelerated by a uniform electric field. The proton moves 6.48 cm in 1.20 10-6 s. Find the voltage drop through which the proton moves
Calculate the change in the amount of bremsstrahlung that would be produced if an aluminum target were substituted for an iron target.
Consider 3 Resistors: 10 k?, 20 k?, and 30 k?. Calculate the total resistance if the resistors are connected in series with each other
A field mouse trying to escape a hawk runs east for 6.0m , darts southeast for 3.9m, What is the magnitude of the net displacement of the mouse
A 220 g air-track glider is attached to a spring. The glider is pushed in 12cm against the spring, and then released. A student with a stopwatch finds that 16 oscillations take 11.5.
An object of heat capacity 100 cal/°C is initially at 30°C. Estimate the resulting entropy change of the universe
An electric fan is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 83.8 rad/s in 1.75 s. Determine the initial angular speed of the fan
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