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A baseball traveling at 70 mph is hit back at the pitcher with a speed of 110 mph. If the ball remains in contact with the bat for 0.01 s, what is the average acceleration of the ball?
A parallel-plate capacitor has square plates that are 6.00cm on each side and 4.20mm apart. If the potential difference between the plates is 78.0V , how much electrical energy is stored in the capacitor
A 2.5kg cannonball is fired from the top of a cliff. The cannonball leaves the cannon at a height of h=75 m above the ground below. what is the speed of the cannonball just before it hits the ground
A drinking fountain projects water at an initial angle of 50 degrees above horizontal Water reaches maximum height of 0.150m above point of exit. Explain how you get velocity of water at this point
A house has a floor area of 120 m2 and an outside wall that has an area of 31 m2. The earth's magnetic field here has a horizontal component of 2.60 10-5 T that points due north and a vertical component of 5.00 10-5 T that points straight down, to..
A solid cylinder of mass 10kg and radius 20cm is free to rotate around an axis parallel to the axis of the cylinder. What is the kinetic energy of the cylinder
A one loop circuit is connected thus: A 3.0 V source, with the + side connected to a 10 ohm resistor, how much power does the bulb dissipate
On average, each American produces 20,000 kg of CO2 per year, mostly through the consumption of fossil fuel such as oil, coal, and natural gas. what would be the length of each side of the cube
In July 2005, NASA's "Deep Impact" mission crashed a 372-kg probe directly onto the surface of the comet Tempel 1, hitting the surface at 37000 km/h. What change in the comet's velocity did this collision produce
If the heat engine used to harvest the energy from humans was operating at the theoretical maximum efficiency what temperature would the cold reservoir have to be make this energy source viable? (Assume the hot reservoir is that of the average ski..
Four point charges of magnitude 3.9 µC are at the corners of a square of side 3 m. Find the electrostatic potential energy if all the charges are negative
The electron gun of a television tube accelerates an electronfrom rest through a potential difference of 350V. evaluate the change in the potential energy of the electron
An Earth satellite moves in a circular orbit with an orbital speed of 5200 m/s. Find the radial acceleration of the satellite in its orbit
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