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Assume the equation x = At3 + Bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time.
a) Determine the dimensions of the constants A and B.
b) Determine the dimensions of the derivative:
dx/dt=
The lob in tennis is an effective tactic when your opponent is near the net. It consists of lofting the ball over his head, forcing him to move quickly away from the net, With what minimum average speed must he move
suppose an electric motor continuously operating with average power 4.65 kW runs the pump. Find its efficiency.
A particular guitar string is supposed to vibrate at 200Hz, but it is measured to actually vibrate at 209Hz. By what percent should the tension in the string be changed to get frequency to the correct value.
A person goes hiking on the trails in a Park. The trail leads the hiker 6 km north, 4 km east, 2 km north, 2 km west and 5 km south. what is total distance traveled
q1. an electric field of 8.55x105 vm is desired between two parallel plates each of area 35.00 cm2 and separated by
The 40 kg man in the roller coaster car is sitting on a bathroom scale. If he is travelling at 35.3 m/s at the point shown and the radius of vertical coaster track is 53 meters, to the nearest newton what does the scale read?
You are 1.9 m tall and stand 3.4 m from a plane mirror that extends vertically upward from the floor. What is the minimum height the mirror must have
A solenoid of inductance L = 50 mH has a magnetic energy U = 3 x10-4 J with a density u = 0.0042 J/m3, What is the winding density n of the solenoid
The Achilles tendon is subjected to a large tension stress that results in a strain of 5%. how much does it elongate as a result of this strain
The ball rebounds straight upward to a height of 0.660 m. illustrate hat are the magnitude and direction of the impulse of the net force applied to the ball during the collision with the floor.
Find out the acceleration of the crate if the applied force is 380 , the mass of the crate is 32 and the coefficient of kinetic friction is 0.42.
At 20.0°C, a mainly silicon resistor has a resistance of 395 ?, and a tungsten resistor has a resistance of 752 ?. At what temperature will their resistances be equal
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