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Starting from rest, a boulder rolls down a hill with constant acceleration and travels 3.00m during the first second.
a) how FAR does it travel during the second second?
b) how FAST is it moving at the end of the first second?
c) how FAST is it moving at the end of the second second?
From the top of a 40.0m high cliff, two rocks are simultaneously thrown. One is thrown upwards at 20.0m/s, the other is thrown downwards at 8.0 m/s. How far apart are the two rocks after 1.5 seconds?
A laser beam of wavelength 580nm is incident normally on a transmission grating having 410lines/mm
What mass (in grams) of steam at 100°C must be mixed with 124 g of ice at its melting point, in a thermally insulated container, to generate liquid water at 37.0°C.
Orb spiders make silk with a typical diameter of 0.15 .A typical large orb spider has a mass of 0.50. by how much will the silk stretch
Speedboat A negotiates a curve whose radius is 115 m. Speedboat B negotiates a curve whose radius is 194 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
A 0.21-kg pinecone falls 10 m to the ground, where it lands with a speed of 12 m/s. How much work was done on the pine cone by air resistance
A projectile is fired at time t = 0.0 s, from point 0 at edge of a cliff, with initial velocity components of vix=30m/s and viy = 100m/s. The projectile rises, and then falls into the sea at point P. The time of flight of the projectile is 20s.
Suppose a Proton is accelerated through a potential difference of 10 Gigavolts. Determine the proton's final kinetic energy
In an experiment like you are going to do in Investigation 1 of lab this week, you count the number of beta rays from a 137Cs source. What is the average number of counts
A 19.0cm × 19.0cm square loop of wire lies in the xy-plane with its bottom edge on the x-axis. What is the size of the induced current in the loop at t = 0.550s
A person who weighs 620 N stands at x = 5m, right on the end of a long horizontal diving board that weighs 350 N. The diving board is held up by two supports, one at its left end at x = 0, and one at the point x = 2.00 m.
If you had a single polarizer, how might you determine whether or not light from a room light was polarized when emitted from the bulb.
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