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Here is the problem which I am struggling on, please help me!
Problem: Suppose you are located 174 m from a radio transmitter.
Part I: How many wavelengths are you from the transmitter if the station calls itself 1145 AM?
Part II: What if this station is 98.1 FM? (The FM band frequencies are in megahertz.)
I want you to explain the physics in this problem.
Hydraulics is used on many cars for operating brakes. The normal force among the brake pads and rotor needs to be 1500Newtons, and your pump can supply a pressure of 225 PSI. What is the diameter of the cylinder/piston (in cm.)?
A 1.95 kg mass attached to a spring oscillates with a period of 0.390 s and an amplitude of 17.0 cm. Find the total mechanical energy of the system
You need a transformer that will draw 14W of power from a 220 V (rms) power line, stepping the voltage down to 12V (rms). A. what is the current in the secondary coil. B.What should be the resistance of the secondary circuit? C.What will be the equiv..
A golfer stands 30 ft away and 3 ft below a hole on a flat raised green. If the sand wedge the golfer utilizes to hit the ball gives the ball an initial angle of 50 degrees, decide the range of velocities v0 that will cause the ball to land within th..
Give the force exerted on the bag, to validate your reply.
The intensity of sunlight at the distance of the Earth's orbit is 1380 W/m2. An Earth-orbiting satellite has a solar panel that measures 1.35 m by 4.86 m, how much electrical energy does the panel produce
Explain why you are safe and unaffected inside a car that is struck by lightning. Also explain why it might not be safe to step out of the car just after the lightning strike, with one foot in the car and one on the ground.
Cells maintain a high concentration of macromolecules inside them. How do you expect this to affect the osmotic pressure inside the cell? What mechanisms does the cell use to counterbalance osmotic pressure? What are "depletion forces" and why are..
ligtht of wavelength 620 nm passes thrrough a solid of refractive index 2.5 in which the speed of sound in the solid is
Two tiny conducting spheres are identical and carry charges of -20.7 μC and +51.7 μC. They are separated by a distance of 2.39 cm. What is the magnitude of the force that each sphere experiences?
A thin rod (length = 1.37 m) is oriented vertically, with itsbottom end attached to the floor by means of a frictionless hinge.The mass of the rod may be ignored, compared to the mass of theobject fixed to the top of the r
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.46 m radius and is 2 m high. How much energy is lost through the walls of the hot water heater
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