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Ryan throws a tennis ball vertically upward. If the ball returnsto the point of release in 3.5 seconds, what is the speed of the ball as its being released?
two equal-volume compartments of a box are joined by a thin wall as shown in the figure. the left compartment is filled
An object at 20 degrees celsius with heat capacity of 100 cal/degrees celsisu is placed in 40g of water at 100 degreescelsius. After equilibrium is reached, the object is removedfrom the hot water and placed in 200g of water at 0 degreescelsius.
A near-sighted person might correct his vision by wearing diverging lenses with focal length f = -40cm. Use ray tracing to determine the height of the image
A wind turbine is initially spinning at a constant angular speed.As the wind's strength gradually increases, What is the initial angular velocity of the turbine
The escape speed from the Earth is 1.12 × 10^4 m/s, so a gas molecule traveling away from Earth near the outer boundary of the Earth's atmosphere would, at this speed, be able to escape from Earth's gravitational field.
Two small containers, each with a volume of 100cm3 , contain helium gas at 0oC and 1.00atmpressure. What common pressure will exist in the two containers
on the apollo 14 mission to the moon astronaut alan shepard hit a golf ball with a golf club improvised from a tool.
In a chase scene, a movie stuntman runs horizontally off the flat roof of one building and lands on another roof 2.1m lower. If the gap between the buildings is 4.8m wide, how fast must he run to just barely cross the gap? In other words, what is his..
Suppose an object is placed 6 cm in front of a lens that has a focal length of 4 cm. Where is the image located? What are the magnification and the character of the image
The total mass of the decay products is less than the mass of the original 294Uus atom and what accounts for this missing mass
A cord of length 1.3 m is fixed at both ends. Its mass per unit length is 1.1 g/m and the tension is 11 N. (a) What is the frequency of the fundamental oscillation? Hz (b) What tension is required if the n = 3 mode has a frequency of 0.60 kHz? N
consider a uniform electric field of 50 nc directed toward the east. if the voltage measured relative to ground at a
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