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The rate of change of acceleration is given by da/dt=-3v-4(dv/dt).Find the velocity as a function of time using differential equations.
A body that weighs 50lb is placed in contact with an inclined plane surface. The coefficient of friction between the surfaces is 0.25 and the angle between the inclined surface and the horizontal reference plane in 28 degrees. In order to keep the..
A right triangle has sides of 30, 40 and 50 cm. A charge of -10 x 10-6 C is placed at the right angle; a charge of + 10 x 10-6C at the smaller acute angle and a charge of + 5.0x10-6 C at the larger acute angle
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How long will the mortar shell remain in the air
Mike lifts a 15 kg cubical crate from the floor if his apt until it is flat against the ceiling. How much work against gravity does Mike do in lifting the crate
The men's world record for the shot put, 23.12m, was set by Randy Barnes of the United States on May 20, 1990. If the shot was launched from 6 f above the ground at an initial angle of 42 degrees, what was its initial speed.
Light of wavelength 579 nm shines down on two glass plates, spaced at one end with a thin piece of paper. Looking down on the plates (the figure shows a side view only), 26 bright interference fringes are observed across the top plate by a dark fring..
Coherent light that contains two wavelengths, 660nm and 470nm, What is the distance on the screen between the first-order bright fringes for each wavelength
An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.27 × 10-6 T. What is the intensity S of the wave
An electron is accelerated by a constant electric field of magnitude 325 N/C. Find the acceleration of the electron
Newton’s Third Law of Motion states that when one object exerts a force on a second object, the forces are __ Equal in magnitude and equal in direction. Equal in magnitude and opposite in direction
On a hot summer day, 4.00 x 106 J of heat transfer into a parked car takes place, increasing its temperature from 35.0o1 C to 45.0o C. What is the increase in entropy of the car due to this heat transfer alone?
A current of 6.0 A is drawn from the battery in the figure shown below. How much is the voltage of the battery Vab in V
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