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The springs of a 1600 kg car compress 5.0 mm when its 70 kg driver gets into the driver's seat, If the car goes over a bump, what will be the frequency of vibrations?
a potential difference of 90 mv exists between the inner and outer surfaces of a cell membrane. the inner surface is
A jet with mass m=130000kg jet accelerates down the runway for takeoff at 2.1m/s^2. What is the net horizontal and vertical force on the airplane
two point charges are on the y-axis. a 5.0 microc charge is located at y 1.15 cm and a -2.32 microc charge is located
A 4.7- kg box of books is pulled up a 4.16- m-long inclined plank to a height of 1.8 m. What percent of the work is lost to friction
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 55.3 J and a maximum displacement from equilibrium of 0.213 m. (a) What is the spring constant? N/m (b) What is the kinetic energy of the sys..
Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 9.1 rad/s, For how many minutes have you been riding your bike
A toaster uses a Nichrome heating wire. When the toaster is turned on at 20° C, the initial current is1.50 A. A few seconds later, the toaster warms up and the currentnow has a value of 1.24 A. The averagetemperature coefficient of resistivity for..
a girl is riding her bicycle . when she gets to a corner, she stops to get a drink from her water bottle. how long does it take for her to catch up with her friend
A block is released from rest at the top of a frictionless ramp (inclined plane) that makes an angle of 25° with respect to horizontal. What is the length of the ramp D1
A solid uniform disk of mass M = 8.8 kg and radius R = 21 cm rests with its flat surface on a frictionless table (i.e., the axis of the cylinder is perpendicular to the table.) The diagram shows a top view. A string is wrapped around the rim of th..
The highest theoretical efficiency of a gasoline engine, based on the Carnot cycle, is 0.300 or 30.0%. what is the temperature in the cylinder immediately after combustion
Conclude a rough "scale factor" or "plate scale." Measure the distances in mm or cm between each of the marked wavelengths and average the results.
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