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A balloon carrying a basket is descending at a constant velocity of20.0 {\rm m}/{\rm s}. A person in thebasket throws a stone with an initial velocity of 15.0 {\rm m}/{\rm s} horizontally perpendicular to the path of the descending balloon, and 4.00 {\rm s} later this person sees the rock strike the ground. At the instant the rock hits the ground,how far is it from the basket?
A 40-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, kinetic energy decreases to 240J from 470J. How high does she rise during this interval? Avoid air resistance.
A 515-? resistor, an uncharged 1.50-µF capacitor, and a battery with an emf of 6.45 V are connected in series. What is the RC time constant?
A charge of 0.040C moves vertically in a field of 0.075T that is oriented 45? from the vertical. What speed must the charge have such that the force acting on it is 8.0N
The initial speed of a 2.51-kg box traveling up a plane inclined 37° to the horizontal is 4.42 m/s. How far along the incline does the box travel before coming to a stop
When verticaly falling sand hits a horizontally moving cart, the cart slows. avoid any friction between the cart and the tracks. Give two reason for this, one in terms of a horizontal force acting on the cart, and one terms of momentum conservatio..
If a capacitance meter applies a charge of 3.0 V across two plates and reads a capacitance of 30 pF, what is the charge on the plates
The sun can be considered an ideal blackbody radiator at a temperature of 5900K, What is the peak wavelength of the distribution
Near Neverland Ranch, there is a big beautifulpink dam. First thing in the morning of everyday, Michael Jacksonopens his window and gazes at this big beautiful pink dam. And heexclaims, “Hurray for pink, my favorite color!!”.Unfortunately, one day..
A proton moving at 4.30 106 m/s through a magnetic field of 1.75 T experiences a magnetic force of magnitude 8.04 10-13 N
What is tension in each of the cables
Christy has a grandfather clock with a pendulum that is 1.000 m long. If the pendulum is modeled as a simple pendulum, what would be the period
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti..
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