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An electron with kinetic energy 3.6 keV moves horizontally into aregion of space in which there is a downward-directed uniformelectric field of magnitude 11 kV/m.
a) What are the magnitude and direction of the(smallest) magnetic field that will cause the electron to continueto move horizontally? Ignore the gravitational force, which israther small.
A 310kg wooden raft floats on a lake. When a 75kg man stands on the raft, it sinks 3.20cm deeper into the water. When he steps off, the raft vibrates for a while.
how can an atom be ionized by an electric field? how strong does this e-field have to be? hint assume that the binding
two charges are placed between the plates of a parallel plate capacitor. one charge is q1 and the other is q2 7.21c.
a physics student swings a pail of water in a vertical circle 1.0 m in radius at a constant speed. if the water is not
a the harmonic oscillator can be used as a model for the vibrational motion of a diatomic molecule. describe the
a quarter diameter 2.40 cm is held at arms length 64.0 cm. the sun has a diameter of 1.39 x 109 m and is 1.50 x 1011 m
A pendulum is made out of a (251.3 +/- 0.1) g mass and a string that is (1.3 +/- 0.005) m long. compute the centripetal force acting on the mass
An electron traveling at 15 m/s enters a 1.3 T magnetic field. The angle between the velocity and the field is 90o. Find the radius of the resulting circular path.
a steel rod is used to transfer heat from a chamber at 300 k to a chamber at 250 k. which of the following changes in
When its 75kW engine is generating full power, a small single engine airplane with a mass of 700 kg gains altitude at a rate of 2.5 m/s. what fraction of the engine power is being used to make the air plane climb.
An 854 kg (1887 lb) dragster, starting from rest, attains a speed of 27.1 m/s (60.7 mph) in 0.59 s.
A 72 cm long, 1.0 mm diameter steel guitar string must be tightened to a tension of 1800 N by turning the tuning screws. By how much is the string stretched
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