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A coil is placed in a magnetic field and has afflux FB through it. The coils stressed so that its area reduces to 55% of its original value. If the plane of the coil stays the similar and the flux through it remains the same, how should the magnetic field change?
a person stands on a platform initially at rest that can rotate freely without friction. the moment of inertia of the
The blade of a windshield wiper moves through an angle of 90.0° in 0.432 s. What is the magnitude of the centripetal acceleration of the tip of the blade
A machine part rotates at an angular speed of 0.44 rad/s; its speed is then increased to 1.5 rad/s at an angular acceleration of 0.78 rad/s2. Find the angle through which the part rotates
a bat flies toward a wall emitting a steady sound with a frequency of 24.0 . this bat hears its own sound plus the
A large man sits on a 4-legged chair with his feet off the floor. The combined mass of the man and chair is 95.0 kg.what pressure does each leg exert on the floor
An ambulance leaves the police station in Big City and travels 4 blocks north then 5 blocks east to pick up a patient. How far is the police station from the hospital
A series LR circuit with L = 20 mH and R = 2.0 k? is connected to a potential source of amplitude 5.0 V and angular frequency 200 rad/s. find the voltage across the resistor and the inductor
a balloon contains 4.20 moles of a monatomic ideal gas. As energy is added to the system by heat, find work Wenv done by the gas in expanding the balloon
A man drinks a bottle of beer and proposes to work off its460kj by exercising with 20 kg barbell. how many times must he lift the barbell
a voltmeter is used to read the potential difference accross the poles of a battery.the battery is rated at 20 v. the
a rifle with a mass of 2.5 kg fires a bullet with a mass of 0.0045kg. the bullet moves with a muzzle velocity of 350m/s after the rifle is fired
a road rises 1ft for every 100ft it travels horizontally it is said to have a 15 grade. if the road you are traveling on has a 5 % grade what is the angle of the road above the horizontal
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