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You are walking along a small country road one foggy morning and come to an intersection. While you are crossing, you hear an ambulance siren. As a paramedic, you know that the siren sounds at a frequency of 7.47 kHz. But, as an amateur musician with perfect pitch, you can tell that the frequency you are hearing is actually 8.01 kHz. Is the ambulance moving toward or away from you?
At what speed is the ambulance traveling?
You bring a 350-g wrench into the house from your car. The house is 15 C warmer than the car, and it takes 2.52 kJ of energy to warm the wrench by this amount. Find (a) heat capacity of the wrench and (b) specic heat of the metal it's made from.
Vector A points in the negative y direction and has a magnitude of 3 units. Vector B has three times the magnitude and points in the positive x direction. Find out the direction and magnitude of the following vectors.
The charges 5.92 ?C, ?8.8 ?C, 40.7 ?C, and ?86 ?C are located inside a submarine, Calculate the net electric flux through the submarine
what would the period of the system be. When a particular mass-spring system is started by stretching the spring 5 cm, one complete oscillation takes 2 seconds.
The amplitude of the electric field of an electromagnetic wave is 197 V/m.
In a parallel plate capacitor, two plates are being discharged by a constant current. Each plate has a radius of 4.0 cm. During the discharging, at a point between the plates at radial distance 2.0 cm from the central axis, the magnetic field has ..
Determine magnitude of the force from the ground on each front wheel. what is magnitude of the duck's velocity.
A street lamp weighs 146 N. It is supported equally by two wires that form an angle of 120° with each other.
A 2.10 x 10^3 kg car starts from rest at the top of a 4.70 m long driveway that is inclined at 25° with the horizontal. If an average friction force of 4.0 x10^3 N impedes motion, find out the speed of the car at the bottom of the driveway.
The heat of fusion for water is 80. cal/g. How various calories of heat are released when 20.0 g of water at 30. °C is cooled to 0 °C and frozen to ice at 0 °C
How many centimeters thick would the concrete need to be so that 18.0 per cent of the neutrons are transmitted.
Ann was reaching up to grab a box of cereal that was on top of the refrigerator. She had extended her arm as well as stood on her tip-toes to reach the box. Which primary muscle allowed Ann to extend her elbow and which 2 primary muscles allowed h..
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