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A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 19.9 m/s directly upward. Choose upward as the positive direction in your analysis.
(a) What is the maximum height above the ground that the ball reaches?
(b) How long does it take to reach the maximum height?
(c) How long does it take to reach the ground after it reaches its highest point?
(d) What is its velocity just before it hits the ground? (Indicate the direction with the sign of your answer.)
On planet Tehar, the free-fall acceleration is the same as that on Earth, however there is also a strong downward electric field that is uniform close to the planet's surface. A 2.00 kg ball having a charge of 5.00 µC is thrown upward at a speed of 2..
A converging lens is placed between a light source and a screen and the system is adjusted to give a clear image on the screen. A piece of cardboard is then placed over the top half of the lens. What will happen to the image formed on the screen?
Your spaceship lands on an unknown planet. To determine the characteristics of this planet, you drop a 1.20 kg wrench from 5.00 m above the ground and measure that it hits the ground 0.811 s later. You also do enough surveying to determine that the c..
A lonely party balloon with a volume of 2.40 L and containing 0.100 mol of air is left behind to drift in the temporarily uninhabited, Calculate the entropy change of the air during the expansion
Would you rather live downwind of a nuclear power plant or of a coal-burning power plant? In addition to high-level nuclear wastes, there are intermediate and low-level nuclear wastes. What are some sources of these?
two parallel metal plates have area a255cm2 and are sepearated by l 0.50 cm. they have a potential difference of 0.25v.
Conside a spherical asteroid (radius 10km and constant mass density 3g/cm^3). The core extends to 3km, Determine the temperature at the center of the asteroid
The mass of the nuclide ^19_9F is 18.998u. What is the total binding energy for this nucleus
A soccer player kicks the ball off the ground at an angle ? above the horizontal. The ball is in the air for 3.0 seconds, Find the soccer ball's initial horizontal (vox) velocity component
find the magnitude of the force experienced by the negative charge. The value of Coulomb's constant is 8.98755 × 109 N · m2/C2. Answer in units of N
an exercise machine indicates that you have worked off 2.5 calories in a minute-and-a-half of running in place. what
A fully loaded station wagon has a mass of 1690 kg. If each of its four tires is inflated to a gauge pressure of 211 kPa, what is the total tire area in contact with road . What least distance are they from each other? The angle might be too large ..
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