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A pulley rotating in the counterclockwise direction is attached toa mass suspended from a string. The mass causes the pulley'sangular velocity to decrease with a constant angular accelerationα = -2.1 rad/s2. If the pulley's initialangular velocity is ω = 5.40 rad/s, how long does ittake before the angular velocity of the pulley is equal to -5rad/s?
The spheres are brought into contact and then separated to a distance of 2.40 cm. Determine the magnitude of the force that each sphere now experiences, and state whether the force is attractive or repulsive.
A 20.0%u03BCF capacitor is charged by a 160.0-VV power supply, then disconnected from the power, Calculate the oscillation frequency of the circuit
A 240-V dc motor has an armature whose resistance is 1.10? . When running at its operating speed, it draws a current of 16.0A, What is the back emf of the motor when it is operating normally
An observer, whose eyes are 1.99 m above the ground, is standing 35.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 23.0° above the horizontal. Ho..
a baseball is hit directly in line with an outfielder at an angleof 35 degrees above the horizontal with an initial velocity of 22m/s. find the initial separation between the batter and the outfielder
A plastic light pipe has an index of refraction of 1.42. For total internal reflection, what is the minimum angle of incidence if the pipe is in the following media
As you stand by the side of the road, a car approaches you at aconstant speed, sounding its horn, and you hear a frequency of 80Hz. What is the speed of the car
A charge 1.1 × 10?5 C is fixed on the x-axis at 7 m, and a charge 8 × 10?6 C is fixed on the y-axis at 5 m. Calculate the magnitude of the resultant electric field ~E at the origin. Answer in units of N/C
Two coils are at fixed locations. When the current in coil 2 increases at a rate of 15 A/s, the emf in coil 1 is 25 mV. Find their mutual inductance
He milk is pumped (at a constant flow rate of 29532 L h-1) through a pipe that has an internal diameter of 65 mm. What is the milk velocity
An object is placed 107.6 mm to the left of a diverging lens. Where is the image located when the lens has a focal point of 58.8 mm
Find the conversion factor between weights measured in Newtons to weights measured in pounds
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