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If a projectile is launched vertically from the Earth with a speed equal to the escape speed, how far from the Earth's center is it when its speed is 1/9 of the escape speed?
Use the strength of the magnetic field at the Earth's surface (4 x 10-5 T) to estimate the strength in the Van Allen belts
An electrician connects two different bulbs in seriesto 120 V circuit. One bulb is rated as 40 W for a nominal voltage 220V, Which of the two bulb is producing more light
If Wave B's amplitude is instead -13.4 mm, what is the amplitude of the wave pulse formed while they are interfering
Find the x and y components of vector v = (8.0 cm/s, -x direction) (answer should be in cm/s), Find the x and y components of vector d = (4.0 km, 33 degress left of the + y axis)
illustrate what is the magnitude of the acceleration of the box and hanging mass?
The work needed to remove an electron from the surface of sodium is 2.3 eV. How big maximal velocity will have electrons if the surface of sodium will be illuminated with ultraviolet light wave length
An 91-g arrow is fired from a bow whose string exerts an average force of 100N on the arrow over a distance of 82cm
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
The largest moon of Pluto, Charon, was discovered in 1979. Charon is in a circular orbit of radius 19,600 km around Pluto, What is the total mass of the Pluto-Charon system
A brick of mass M sits on a rubber pillow of mass m . Together they are sliding to the right at constant velocity on an ice-covered parking lot, Draw a free-body diagram of the brick and identify each force acting on it
Uncompressed, the spring for an automobile suspension is 45cm long. It needs to be fitted into a space 36cm long. how much work does a mechanic have to do to fit the spring
A wire etched onto a computer chip carries a current of 0.000000033 A. In 1.8 milliseconds, how many electrons flow past a point on the wire
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