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An electron experiences the greatest force as it travels 3.7×106 m/s in a magnetic field when it is moving northward. The force is vertically upward and of magnitude 7.4×10-13 N.
What is the magnitude of the magnetic field?
Express your answer using two significant figures.
An astronaut constructs a pendulum with a length of 1 meter on a new planet. what is the acceleration due to gravity
The gondola ski lift at a Colorado ski resort is 2676 m long. On average, the ski lift rises 12.7° above the horizontal. How high is the top of the ski lift relative to the base
A puck goes around its circular path once every 1.6 second. Its speed is 33 cm/s. Estimate what the radius of its circular path
The angular momentum of a flywheel having a rotational inertia of 0.242 kg·m2 about its central axis decreases from 9.30 to 0.230 kg·m2/s in 4.40 s. What is the magnitude of the average torque acting on the flywheel about its central axis during th..
A rollercoaster with passengers has a mass of 2500 kg. This rollercoaster is powered to the top of a 25 m hill where it pauses for a moment at rest. What is the speed of the rollercoaster at the top of the vertical loop
A large boulder is ejected vertically upward from an underground volcano whose mouth is level with ground. The initial velocity of the boulder 35.5 m/s. How long it takes to reach the maximum height
A person's eyeball has a diameter D (measured from lens to retina). find Where is this person's near point and far point
The peak power of a 6ft. diameter antenna is 10 watts and its duty cycle is 0.250. The wave length is 0.03m/cycle. Find the power density in mw/cm2 at 50 meters from the antenna.
A satellite with 2 rectangular solar cells wings with A=60m2, when the wings normally face the sun with an intensity I=1200 W/m2, how much force on the satellite due to the sunlight
Two converging lenses, each having a focal length equal to 10 cm, are 15cm apart. Discover the final image location for an object 15 cm from one of the lenses and 30 cm from the other. Do this both graphically and algebraically.
During normal operation, a computer's hard disk spins at 5400 rpm. what is the average angular acceleration of the hard disk
In a double-slit experiment, the slits are separated by a distance equal to 100 times the wavelength of the light passing through the slits. The fringes are observed on a screen 50cm from the slit. What is the distance between the central maximum ..
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