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An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 14.9 N. When completely submerged in water, its apparent weight is 12.9 N. What is the volume of the object?
What inductance must be connected to a 25 pF capacitor in the oscillator capable of generating 480 nm (i.e., visible) electromagnetic waves.
A flywheel having constant angular acceleration requires 4.6-{rm s} to rotate through 162 rad. Its angular velocity at the end of this time is 100 rad/s. Find out the angular velocity at the beginning of the 4.6s interval; the angular acceleration..
A coil with resistance 0.05( and self-inductance 0.01H is connected across a 12-volt battery of negligible internal resistance. a) How long after the switch is closed will the current reach 95% of its final value.
When a 24 Ohm resisotr is connected across a 12 Volt Battery, a current of 482 ma flows. What is the power delivered by the emf of the battery
Evaluate the magnitude of N at the lowest point? If the wheel's speed is doubled, what is the magnitude FN at the highest and lowest point?
fired horizontally at a speed of 550, goes completely through the block, emerging at a speed of 180 . Illustrate what is the speed of the block immediately after the bullet exits?
The wire is cut at point P. Will the potential difference between points A and B increase, decrease, or remain the same? Give reason for.
A 45.3-cm diameter disk rotates with a constant angular acceleration of 2.20 rad/s2. It starts from rest at t = 0, Find the linear velocity and tangential acceleration of P at t = 2.30 s
You are driving to the grocery store at 24 m/s. You are 115 m from an intersection when the traffic light turns red. Suppose that your reaction time is 0.50 s and that your car brakes with constant acceleration. How far are you from the intersecti..
A dog chasing a ball starts at rest and accelerates uniformly over a distance of 5 meters. It takes the dog 1 s to cover that first 5 m. What is the dog's acceleration, and what speed is the dog traveling when it reaches the 5 m point?
A diving board oscillates with simple harmonic motion of frequency 3.23 cycles per second. What is the maximum amplitude with which the end of the board could vibrate in order that a pebble placed there not lose contact with the board during the o..
A positive point charge Q is on the y axis at y = D; a negative point charge -2Q is at the point x = D, y = D. Find the potential for points on the x axis
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