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The security alarm on a parked car goes off and produces a frequency of 1190 Hz. The speed of sound is 343 m/s. As you drive toward this parked car, pass it, and drive away, you observe the frequency to change by 128 Hz. At what speed are you driving?
A flat surface with area 1.6 m2 is in a uniform electric field of 560 N/C. What is an electric flux through the surface when it is oriented as follows.
A dentist's mirror is placed 2.5 cm from a tooth. The enlarged image is located 6.1 cm behind the mirror. What kind of mirror (plane, concave, or convex) is being used
The spring is compressed against the floor a distance 2.5 cm and released. If the spring constant is 119 N/m, illustrate what is the magnitude of the spring force acting on the toy at the moment it is released?
A 3.0 block of wood sits on a table. A 3 bullet, fired horizontally at a speed of 440, goes completely by the block, emerging at a speed of 180.What is the speed of the block immediately after the bullet exits.
A slide projector needs to create a 96.0 cm high image of a 2.20 cm tall slide. The screen is 301 cm from the slide. find focal length does the lens need
Consider three charged particles arranged in an equilateral triangle with sides of length d. Find the electric field vector at the triangle's center
Police determine skid marks 83 m long on the highway showing where the car made an emergency stop. Assume that the acceleration was -10 m/s2 (about the highest for dry pavement), how fast was the car going.
When on the ground, Ian's weight is measured to be 692 N. When Ian is on an elevator, his apparent weight is 796 N. What is the net force on the system
the U.S. five-cent coin, the nickel, has a mass of 5.1 grams, a volume of 0.719 cm^3, and a total surface area of 8.54 cm^2. how much radiant energy per second comes from the nickel
A well-insulated electric water heater warms119kg of water from 20.0° C to47.0° C in33.0min. Find the resistance of its heating element
In a physics laboratory experiment, a coil with 200 turns enclosing an area of 12.0 cm^2 is rotated from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to field.
A concave mirror produces a virtual image that is seven times as tall as the object. What is the focal length of this mirror
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