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A circuit consists on an emf of 48 V, a resistor with R = 8.0 ohms, an inductor with L = 2.0 H, and a switch, all connected in series. At time t after the switch is closed, the current in the inductor is increasing at the rate i/t = 5.0 A/s.
At this instant, what is the current in the resistor?
A block is released from rest on an inclined plane and moves 3.1 m during the next 3.9 s. What is the coefficient of kinetic friction k for the incline
A 0.38 kg iron horseshoe that is initially at 580°C is dropped into a bucket containing 21.8kg of water at 21 °C. What is the final equilibrium temperature (in °C)? Avoid any heat transfer to or from the surroundings. Do not enter units.
A simple pendulum has mass 1.28 kg and length 0.600 m. What is the period of the pendulum near the surface of Earth
A 71 kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m. If the skier's speed at point A is 7.0m/s , what is the normal force exerted by the snow on the skier at point B? Ignore fricti..
A 50 Newton horizontal force pushes a 10 kilogram mass sitting on a horizontal surface towards the right. What is the acceleration of the mass and its direction
A small remote-control car with a mass of 1.59 kg moves at a constant speed of v = 12.0 m/s in a vertical circle inside a hollow metal cylinder that has a radius of 5 m.
A proton is confined within an atomic nucleus of diameter 4.1 fm. Estimate the smallest range of speeds
A bat is pursuing an insect and using echolocation of 60-kHz sound waves to track the insect. find the difference in the two echo times the bat measures
With what minimum speed should you toss a 140g ball straight up to hit the 11.0m-high roof of the gymnasium if you release the ball 1.30m above the ground? Resolve this problem using energy.
A 2.0 mm-diameter glass bead is positively charged. The potential difference between a point 2.2 mm from the bead
A rocket is launched at an angle of 59° above the horizontal with an initial speed of 97 m/s. The rocket moves for 3s along its initial line of motion with an acceleration of 28m/s2.
A 0.33kg block is located 0.2 m from the center of a turntable. The coefficient of static friction between block and surface of the turntable is 0.44.
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