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A 145 g baseball is dropped from a tree 9.0 m above the ground.
(a) With what speed would it hit the ground if air resistancecould be ignored?
(b) If it actually hits the ground with a speed of8.00 m/s, what is the magnitude of theaverage force of air resistance exerted on it?
To get back to the shuttle, the astronaut unstraps a 10-kg tool kit and throws it away with a speed of 8 m/s. In the script, the astronaut, who has a mass of 80 kg without the toolkit, survives, but is this accurate.
An electron moves in a circular path perpendicular to a constantmagnetic field with a magnitude of 5.00 mT. The angular momentum of the electron about the center of the circle is 2.50multiplied by 10-25J·s.
A motercycle has a mass or 2.50*102 kg. a constantforce is excerted on it for 60.0s. What is the change in momentum
Superman meets an asteroid in outer space and hurls it at 90m/s. The asteroid is five hundred times more massive than Superman is. In the strip, Superman is seen at rest after throw. Taking physics into account, what would be his recoil speed.
A 4.95-kg ball, moving to the right at a velocity of +1.60 m/s on a frictionless table, Find the final velocities of the balls if the collision meet the following conditions
You are told that there are 17 charges with the same charge Q > 0 C and 19 charges with the same charge - Q in a closed container of arbitrary shape. Calculate the net electric flux through the container
An air-track glider attached to a spring oscillates with a period of 1.50s . At t=0s the glider is 4.50cm left of the equilibrium position, obtain the phase constant
As F is enhancement d, the block would either begin to slide, or begin to tip over. What must be the coefficient of static friction ms so that the block begins to slide rather than tip.
Two violin strings are tuned to the same frequency, 294Hz, What will be the beat frequency heard when the two strings are played together
Two point charges of magnitude 3.02 nC and ?1.82 nC are separated by 41.4 cm. What is the potential energy of the pair of charges
A box with a mass of 3:5kg slides of a ramp 8 mhigh, thenwhen traveling on horizontal surface collides with a box with mass 5 kg, find the velocity of the boxes after the collision
A physics instructor drives down to St. Louis to see his mom. On the way there, he travels the first half of the time at 60.0 km/hr and the second half the time at 95.0 km/hr. What is his total displacment during the entire trip
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