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Starting from rest, you move with a constant acceleration of 2.1 m/s2 for 15.0 s and then move with an acceleration of -2.1 m/s2 for another 15.0 s. What is your maximum speed attained? How far do you go during the whole trip? What is your average speed?
A transformer with a turns ratio (secondary/primary) of 1:15 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit.
A radio station broadcasts at a frequency of 92.0 MHz with a power output of 51.8 kW. what is the energy of each emitted photon
a partice moves along the path y=-0.090x^6(-7)meters with a constant speed of 4 m/s. assume dx/dt>_0. Determine the cartisian components of velocity and acceleration at x= - 2m
The function y(x, t) = (25.0 cm) cos(?x - 26?t), with x in meters and t in seconds, describes a wave on a taut string. What is the transverse speed for a point on the string at an instant
A string is wound around a metal wheel that is free to spin on a frictionless pivot. A hanging mass is connected to the other end of the string, What is the initial velocity of the hanging mass
The magnetic flux that passes through one turn of a 18-turn coil of wire changes to 5.0 Wb from 14.0 Wb in a time of 0.020 s. What is the resistance of the wire
The distance between two telephone poles is 48.0 m. while a 0.600 kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. Draw a free-body diagram of the bird. (Do this on paper. Your instructor might ask you to turn i..
(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 12.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mole. (b) Imagine adding electrons to the pin until the negative charge h..
michael hits a 45.9 g golf ball traveling 56.0 m/s at an angle 60 degree north of east and splits into three pieces. what is the velocity of the third piece
Will the car hit the barricade
What is the speed of the helium atoms in the tank.
A car is moving to the left at 20 m/s while a truck is moving to the right at 25 m/s. what is the perceived frequency, in Hz, of the sound by the driver of the car
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