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An electron, initially traveling in the +x-direction with a speed of 4 x 105 m/s, enters a uniform electric field directed vertically upward. After traveling in this field for 3.5 x 10-7 s, the electron's velocity is directed 60º above the x-axis. What is the strength of the electric field?
The string in a yo-yo is wound around an axle of radius 0.547 cm. The yo-yo has both rotational and translational motion, like a rolling object, and has mass 0.344 kg and outer radius 1.99 cm. Starting from rest, it rotates and falls a distance of 1...
A hot-air balloon has a volume of 2741 m3. The density of the air outside the balloon is 1.205 kg/m3. How much weight can the balloon lift
A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.0 x 10^4 rev/min. Find the drill's angular acceleration
what is the net work done on the block while it is moving from point a to point b? explain how you arrived at your
The world consumes energy at the rate of about 456 per year, where the joule is the SI energy unit. estimate the average per capita energy consumption rate in watts
A sinusoidal electromagnetic wave having a magnetic field of amplitude 1.35 mu T and a wavelength of 434 nm is traveling in the +x direction through empty space. What is the frequency of this wave? Hz What is the amplitude of the associated electric ..
A mail bag with a mass of 124 kgis suspended by a vertical rope 8.0 mlong. How much work is done by the worker in moving the bag to thisposition
An object with mass m1 = 3.20 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley, Find the magnitude of the acceleration of each object
THE WAVELENGTH OF AN ELECTROMAGNETIC WAVE IS MEASURED TOBE 300M: What is the frequency of the wave?
A thin, uniform rod is hinged at its midpoint. To begin with, one-half of the rod is bent upward and is perpendicular to the other half. What is the angular velocity of the straight rod
Three beads are placed along a thin rod. The first bead has a mass m1=28g placed at a distance d1= 0.7 cm from the left of the rod. Calculate the numeric value of location of the center of mass relative to the middle bead in cm
The charge flowing through a light bulb attached to a 12.0-V battery in 14.0 s is 30.0 C. What is the average power supplied by the battery during this process
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