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A ball is tossed from an upper-story window of a building. Theball is given an initial velocity of 8 m/2 at an angle of 20degrees below the horzontal. It strikes the ground 3.00s later.
a) How far horizaontally from the base of the building doesthe ball strike the ground?b) Find the height from which the ball was thrown.c) How long does it take the ball to reach a point 10m belowthe level of launching?
a find the resistance of a 1.3m length of gold wire with diameter 4.2times10-5m . express your answer to two
in the rectangle in the drawing a charge is to be placed at the empty corner to make the net force on the charge at
A certain radioisotope has a half-life of 11.0 days. What fraction of an initial sample of this isotope remains after 22.7 days
Standard mathematical constants and symbols (e.g. pi), you may only use the symbols shown in the figure and question description - Which of the following plots correctly represents the electric field intensit
A heat engine operates in a Carnot cycle between 90.0°C and 360°C. It absorbs 20,400 J of energy per cycle from the hot reservoir. How much energy does it expel in each cycle by heat
Usain Bolt is running a 100m dash. He accelerates to top speed over the first 45 m, then runs at a constant speed for the last 55 m, What is his top speed
An unknown liquid fills a cubical container of side length of 15cm. The mass of the liquid (excluding the container) is 3.11 Kg. What is the absolute pressure of the container
Green light (? = 546 nm) strikes a single slit at normal incidence. What width slit will produce a central maximum
consider two widely separated conducting spheres 1 and 2 the second having five times the diameter of the first. the
A Federation starship ( 2.10×106kgkg ) uses its tractor beam to pull a shuttlecraft ( 2.10×104kgkg ) aboard from a distance of 15.0kmkm away. The tractor beam exerts a constant force of 4.0×104N4.0 \times 10^{4}\;{\rm N} on the shuttlecraft. Both spa..
what is the angle formed between wire and ground?
A solid sphere has a temperature of 628 K. The sphere is melted down and recast into a cube that has the same emissivity and emits the same radiant power as the sphere. What is the cube's temperature?
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