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A coffee filter of mass 1.7 grams dropped from a height of 1.3 m reaches the ground with a speed of 2.6 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter? The temperature change of the coffee filter is negligible.
Find out vertical and horizontal components of the pendulum
a fan blade is rotating with a constant angular acceleration of 14.0 rads2. at what point on the blade as measured from
An electron is moving at a speed of 0.8 multiplied by 104 m/sin a circular path of radius of 1.9 cm inside a solenoid. The magnetic fieldof the solenoid is perpendicular to the plane of the electron'spath. The solenoid has 25 turns per centimeter.
Two packing crates of massesm1= 10.0kg and m2=7.00 are connected by a light string that passes over a frictionless pulley, Find the acceleration of the 7.00 kg crate
A converging lens with a focal length of 20cm and a diverging lens with a focal length of -52cm are 92.0cm apart. Calculate the distance between image and diverging lens
Electrons are accelerated through a potential difference of 39.0 V. The beam of electrons then passes through a single slit. estimate the width of the slit
Find the speed of a satellite moving in a circular orbit just above the surface of The Earth. The Earth has a radius of 6.38 106 m and a mass of 5.97 1024 kg
A 370-kg sailboat has an acceleration of 0.87 m/s2 at an angle of 64° north of east. Find the magnitude and direction of the net force that acts on the sailboat.
A sinusoidal wave traveling in the positive x-direction has a wavelength of 11 cm, a frequency of 13 Hz, and an amplitude of 19 cm. The part of the wave that is at the origin at t = 0 has a vertical displacement of 6 cm.
a skier of mass 105 kg travels down a ski trail of height 240m. if the skier has a speed of 40 ms at the bottom of the
A transmission line that has a resistance of 0.5 ohm per km of length is used to transmit 200 MW across 300 miles. what should be the transmission voltage
a magnetic field has a magnitude of 1.20 x 10-3 t and an electric field has a magnitude of 5.20 103 nc. both fields
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