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A grinding wheel of radius 0.370 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced with this force is 75.1 N· m. Discover the magnitude of the friction force.
An R = 49.8 ? resistor is connected in series with a C = 12.1 ?F capacitor and a 105 Hz, 110 V source. Calculate the current in the circuit
The speed of oxygenated blood in the artery of a healthy person is measured to be 0.12 m/s. by what percent has the artery area been blocked by plaque
The Relativistic Heavy Ion Collider (RHIC) at Brookhaven iscolliding fully ionized gold (Au) nuclei accelerated to an energyof 200 GeV per nucleon. Each Au nucleus contains 197nucleons.
A barefoot field-goal kicker imparts a speed of 23 m/s to a football initially at rest. estimate the force exerted by the ball on the kickers foot
A piece of copper at 320 degrees Celsius is dropped into 1.4 kg of water at 17 degrees Celsius. If the equilibrium temperature is degrees Celsius , what is the mass of the copper
a plaine releases a bomb which strikes a truck driving below. throughout this scenario both vehicles are moving in the
A uniform rod (L= 3 m) and mass (M = 1 kg) is pivoted about a horizontal frictionless pin through one end. What is the angular speed of the rod when it passes through the vertical position
An electron is acted on by an electric force of 5.1e-14 N. find the magnitude of the electric field at the electron's location
q1. to calculate the program suppose she runs up a flight of 85 steps each 0.150 m high in 69.0 s. for ease ignore an
Explain how the earth’s geomagnetic field is created? Hint: be sure to include thedirection of the earth’s current. Why is Northern Canadabombarded by more intensecosmic radiation (solar wind) than Mexico is? Why do astronauts keep to altitudesbeneat..
A girl is sitting near the open window of a train that ismoving at a velocity of 8m/s to the east. The girl's unclestands near the tracks and watches the train move away. Thelocomotive whisle emits sound at frequency 680 Hz
A cart is driven by a large propeller or fan, which can accelerate or decelerate the cart. Find the acceleration of the cart
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