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The sound intensity from a rock band is measured to 120 dB at a distance of 10 meter. Determine what is the sound intensity at a distance of 100 m?
(dB)
the position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t], velocity and acceleration of the cart
A laboratory electromagnet produces a magnetic field of magnitude 1.53 T. A proton moves through this field with a speed of 5.42 106 m/s. What is the magnitude of the maximum acceleration of the proton
A lightning bolt consisting of electrons moves from the cloud to the ground near the equator. What direction is the bolt deflected by the Earth's magnetic field
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle
Swimmer stroiking along at 2.2 m/s ceases all body movement. Uniformly comes to a dead stop after 10m. How far swimmer moved during her 3rd second of unpowered drift
A 7130-kg car is travelling at 25.8 m/s when the driver decides to exit the freeway by going up a ramp. What is the magnitude of the average drag force exerted on the car
A string is wound around a metal wheel that is free to spin on a frictionless pivot. A hanging mass is connected to the other end of the string. What is the initial velocity of the hanging mass
a inverted cylindrical container is lowered slowly beneath the surface of a pool of water. air trapped in the container
A block in the shape of a rectangular solid has a cross-sectional area of 4.48 cm2 across its width, a front-to-rear length of 22.1 cm, find the magnitude of the electric field in the block
There are two answers required for this question. A rocket is fired straight up and accelerates upward at 12 m/s2 for 18 seconds. find the package's speed when it hits the ground
A35.0 kg child starting from rest slides down a water slide with a vertical height of 19.6 m.(Neglect friction) What is the child's speed three-quarters of the way down?
The wall of a house consists of three layers: a wooden outer wall with an R factor of 1.0, a 3in layer of fiberglass insulation with an R factor of 11, what is the rate of heat loss throug an 8ft by 15ft section of this wall
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