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A speaker at the front of a room and an identical speaker atthe rear of the room are being driven at 421 Hz by the same sound source. A student walksat a uniform rate of 1.45 m/s awayfrom one speaker and toward the other. How many beats does the student hear per second?
A 38.0 kg box initially at rest is pushed 4.00 m along a rough, horizontal floor with a constant applied horizontal force of 125 N. determine the final speed of the box
A blackened, solid copper sphere that has a radius equal to 2.5 cm hangs in an evacuated enclosure whose walls have a temperature of 29°C. find the initial rate at which its temperature changes
Each driver has a mass of 60.00 kg. Including the drivers, the total vehicle masses are 880 kg for the car and 4080 kg for the truck. The collision time is 0.120s. select coordinates such that the truck is initially moving in the positive x direction..
A uniform 20.0 chain 2.00 long supports a 55.0 chandelier in a large public building. Find the tension in the middle link of the chain
A place kicker must kick the football from a point 30.2 m from the goal and clear a bar 3.00 m above the ground. what is the vertical component of the ball's velocity
A 150 g copper bowl contains 220 g of water, both at 20.0ºC. A very hot 300g copper cylinder is dropped into the water, What was the original temperature of the cylinder
A planet Z has a hole bored in it at its equator, and a shaft of light from it's star goes straight down that hole to the bottom, what is the circumference and radius of planet Z
Two resistors (connected in series with each other) and a 10 Vbattery are connected in a loop. The voltage drop across the firstresistor is 2 V. What is the voltage drop across the second resistor?
The position of an object connected to a spring varies with time according to the expression x = (5.4 cm) sin(9.3?t). Find the frequency of the motion
Some enterprising physics students working on a catapult decide to have a water balloon fight in the school hallway. At what angle must they be launched to just graze the ceiling
A thin square metal plate is 1.00 m on a side is located in the xz-plane. A charge of 400 nC is placed on the plate and can be taken to be distributed uniformly.
A surveyor is using a magnetic compass 5.8 m below a power line in which there is a steady current of 88 A. What is the magnetic field at the site of the compass due to the power line
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