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intensity level at a point is 100 db . how much is the actual intensity of sound falling that point ? given threshold intensity of sound 10^-12w/m2
a circular loop of wire of cross-sectional area 0.12m2 consists of 200. turns each carrying 0.50a. it is placed in a
A bullet of mass 5.5 g is fired horizontally into a 2.8 kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction among block and surface is 0.15. The bullet comes to rest in the block, which moves 1.70 m.
The angular momentum of a flywheel having a rotational inertiaof 0.200 kg·m2 about itscentral axis decreases from 3.20 to 1.200 kg·m2/sin 1.60 s. What is the average power of the flywheel?
A car drives horizontally off a 86m -high cliff at a speed of 29m/s . Ignore air resistance. How long will it take the car to hit the ground
question a 67.5 kg person sits on a 3.77 kg chair. each leg of the chair makes contact with the floor in a circle that
A ball is thrown with an initial velocity of 14m/s. using the approximate value g=10 m/s^2, at what time does the ball reach its high point?
A typical ten-pound car wheel has a moment of inertia of about. The wheel rotates about the axle at a constant angular speed making 60 full revolutions in a time interval of 5.
A uniform board is leaning against a smooth vertical wall. The board is at an angle above the horizontal ground. The coefficient of static friction between the ground and the lower end of the board is 0.620.
A simple pendulum uses a steel wire as the "string." The length of this wire is 1.5 m at room temperature. What is the change in the period of the pendulum
A 88.0kN spaceship comes in for a vertical landing. From an initial speed of 1.00 km/s, it comes to rest in 2.50min with uniform acceleration. What braking force must its rockets provide? Ignore air resistance.
Write a paper on the Newtonian Cooling.
In a college homecoming competition, 16 students lift asports car. While holding the car off the ground, each studentexerts an upward force of 400 N. What is the mass of the car in kilograms
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