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A bike and rider have a total mass equal to 200 kilogram. The rider applies the brakes, causing the bike to accelerate at a rate of -2.5m/s^2. Calculate the net force on the bike?
a ball is is throw straight up from initial position of 2.0 m above ground and with an initial velocity of 9.0 ms. what
A 15g bullut is stopped in a block of wood ( mw=5.8 kg). What was the origional speed of the bullet
Two small metallic spheres, each of mass m = 0.45 g, are suspended as pendulums by light strings from a common point. what is the magnitude of the charge on each sphere
a 10.0 komega resistor and a capacitor are connected in series and then a 10.0 v potential difference is suddenly
A swimmer swims north at .35 m/s relative to still water across a river that flows at a rate of .15 m/s from west to east. Calculate the direction of swimmer's velocity relative to the riverbank
An AC voltage of the form ?v = 100 sin 1 000t, where ?v is in volts and t is in seconds, is applied to a series RLC circuit. Assume the resistance is 380 ?, the capacitance is 5.30 µF, and the inductance is 0.500 H. Find the average power delivered t..
An 800-kHz radio signal is detected at a point 4.5 km distant from a transmitter tower. What is the magnetic field amplitude of the signal at that point
White light containing wavelengths from 400 nm to 750 nm falls on a grating with 7000 lines/cm. How wide is the first-order spectrum on a screen 2.10 m away.
A string 1.4 m long with a mass of 2.1 g is stretched between two fixed points with a tension of 80 N. Find the frequency of the fundamental on this string
A Martian leaves Mars in a spaceship that is heading to Venus. On the way, the spaceship passes earth with a speed v = 0.87c relative to it. What is the time of the trip (in seconds) as measured by the Martian
An electron in the n = 6 state of a hydrogen atom makes a transition to the n = 3, What is the wavelength of the photon emitted
question an electron moving with a velocity v 5.0 times 107 ms i enters a region of space where perpendicular electric
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