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Two spheres are launched horizontally from a 1.49-m-high table. Sphere A is launched with an initial speed of 5.2 m/s. Sphere B is launched with an initial speed of 2.99 m/s. What is the time for first sphere to hit the floor?
What is the time for second sphere to hit the floor?
What is the distance that the first sphere travels from the edge of the table?
What is the distance that the second sphere travels from the edge of the table?
An astronaut on the planet Zircon tosses a rock horizontally with a speed of 7.45 m/s. find the size of the acceleration due to gravity on Zircon
Suppose an observer measures the length of a stationary spaceship to be 6 m (note: m for meters). what is the length of the same spaceship
Compute the rms speed of a nitrogen molecule at 36.0°C. At what temperature will the rms speed be half that value
Light of a wavelength 450 nm is incident on a sodium emitter in a photoelectric effect apparatus. What is the cutoff frequency for the emitter
Oppositely charged parallel plates are separated by 4.79 mm. How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.06 mm from the positiveplate
A solar cell has a light-gathering area of 10 cm^2 and produces 0.2 A at 0.8 V (DC) when illuminated with S = 1000 W/m^2 sunlight. What is the efficiency of the solar cell
An elderly sailor is shipwrecked on a desert island, but manages to save his eyeglasses. What is the magnifying power of the telescope he can construct with these lenses
What is the total mass of the Earth's atmosphere? (The radius of the Earth is 6.37 106 m, and atmospheric pressure at the surface is 1.013 105 N/m2.)
A very distant galaxy has an apparent bolometric magnitude of +23.5. Determine the measured flux of photons
What is the work completed by the force of gravity.
A 1.50 kg water balloon is shot straight up with an initialspeed of 5.00 m/s. What is the maximum height of the balloon
Mary (mass = 33 kg) likes to slide too. On a nearby playground there is a straight metal slide with a vertical drop of 2.0 m and a length (measured along the slide) of 3.3 m, What was the net change in potential energy when she went from the top of..
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