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Why the efficiency of the system is higher when the input current of the electrolyser is low? Explain.
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 16.0 cm, find electric feild just outside paint layer
A microscope has an objective lens with a focal length of 16.22 mm and an eyepiece with a focal length of 9.50 mm. what is the actual diameter of the red blood cell
Superman, who likes physics, dangles his watch from a thin piece of string while he is taking off from ground horizontally at a constant acceleration. After 19seconds, what is his speed
A fisherman casts his bait into the river at an angle of 25°. What was the initial velocity he launched the bait with
At time t = 0 s, a wheel has an angular displacement of zero radians and an angular velocity of +15 ras/s. The wheel has a constant acceleration of -0.45 rad/s2. In this situation, the maximum value of the angular displacement, in rad, is closest to:
A 1.60 kg ball and a 7.20 kg ball are connected by an 80.0 cm long massless, rigid rod. The structure rotates about its center of mass at 320.0 rpm. What is the rotational kinetic energy of the structure?
A 0.25 harmonic oscillator has a total oscillation energy of 9.9 J. If the oscillation amplitude is 20.0 cm, what is the oscillation frequency?
0.75 kg block of ice is sliding by you on a very slippery floor at 2.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with the ice block for 0.003 seconds. The block eventually slides at an angle of 22 de..
A man stands on the roof of a 17 m tall building and throws arock with a velocity of magnitude 25 m/s at an angle of 32 degrees above the horizontal. Calculate the speed of the rock when it strikes the ground
At some instant an alpha atom (q=+2e) has the coordinates (3.0,0.0,0.0)(nm) and is moving along the positive x axis with 500 km/s while an electron at (0.0,4.0,0.0)(nm) is moving along the y axis with 1000 km/s. Find the magnitude and direction of..
Consider a car driving at constant velocity. The force of friction acting on the car in Newtons is, Find the magnitude of f when v = 50 miles/h
A rod made of structural steel 5 meters long is to carry a tensile load such that it's just about to begin to stretch beyond its elastic limit. How much will the rod stretch
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