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A ballplayer standing at home plate hits a baseball that is caught with another player at the same height above the ground from which it was hit. The ball is hit with an initial velocity of 22.0m/s at an angle of 49.0° above the horizontal.
How high will the ball rise? _______m higher than where it was hit
A child places a picnic basket on the outer rim of a merry-go-round that has a radius of 5.0 m and revolves once every 26 s. What is the speed of a point on that rim
A converging lens (f = 36.9 cm) is used to project an image of an object onto a screen. Find the two object distances
What is the temperature of a sample of gas, when the average translational kinetic energy of a molecule in the sample is 8.01 × 10-21 J? What is the total translational kinetic energy, in kilojoules, of all the molecules of this sample, when it conta..
An energy-efficient lightbulb, taking in 23.0 W of power, can produce the same level of brightness as a conventional lightbulb operating at power 100 W. The lifetime of the energy-efficient bulb is 10 000 h and its purchase price is $4.00, whereas..
A total of 3.02 106 electrons are placed on an initially uncharged wire of length 1.45 m. What is the magnitude of the electric field a perpendicular distance of 0.400 m away from the midpoint of the wire?
An electric heater is used to heat a room of volume 66 m3. Air is brought into the room at 5°C and is completely replaced twice per hour. what minimum wattage must the heater have
A 60·kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 340·N. What is the final speed of the crate
Local noon at 0o longitude corresponds to 12:00UTC. a) Given that our longitude is 84o 28' 33'' W, what is our local noontime in UTC? (b) What local time would this correspond to today? (c) From this and your estimate of the sun's current hour angle,..
A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle = 40°. For a speed of 35 m/s, at what value of the distance d should a drive..
A wrecking ball (weight = 4600 N) is supported by a boom, which might be assumed to be uniform and has a weight of 3600N. As the drawing shows, a support cable runs from the top of the boom to the tractor. The angle between the support cable and t..
Two identical violin strings, when in tune and stretched withthe same tension, What is the highest possible fundamental frequency of the retuned string
A beam of white light is passed through a prism at an angle of 30o and separated into a spectrum. What is the index of refraction for each color
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