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A train on a straight, level track has an initial speed of 37.0 km/h . A uniform acceleration of 1.10 m/s2 is applied while the train travels 210 meters. What is the speed of the train at the end of this distance? How long did it take for the train to travel the 210 m?
The burning of gasoline in a car releasesabout 3.0 * 10^4 kcal/gal. what is the efficiency of the engine under those conditions
In many cars, the passenger's side mirror has the following warning "Objects in mirror are closer than they appear" embossed on the mirror surface. What is focal length of passengers mirror
an 18-kg groceryi cart is pushed at constant speed along an aisle by a force of 12N. Find the work done by each of the forces on the cart
The drawing shows a skateboarder moving at 7.87 m/s along a horizontal section of a track that is slanted upward by 49.2 ° above the horizontal at its end, which is 0.739 m above the ground.
The H-alpha emission line from gas within a elliptical galaxy has a half-width of 6.5 Angstroms, representing a spread in velocity from opposite sides of the galaxy due to rotation.
A ball is thrown downward from building 122 m tall with initial speed 38.0 m/s What will velocity of this ball be as it reaches the ground
Consider a fusion reaction in which a proton fuses with a neutron to form a deuterium nucleus. How much energy is released in this reaction
A 10.0g ball of clay traveling east at 1.50m/scollides and sticks together with a 60.0g ball of clay traveling north at 8.50m/s. What is the speed of the resulting ball of clay
A 5 gram bullet traveling in 20 0C air at 300 m/sstrikes a flat steel plate and stops. What is the final temperature of the lead bullet
In a liquid with a density of 1450kg/m3 , longitudinal waves with a frequency of 390Hz are found to have a wavelength of 7.50m
The filament of a light bulb has a temperature of 2.8103°C and radiates 55 watts of power. The emissivityof the filament is 0.36. Find the surface area of the filament
A pendulum is made with a 4.00 kg mass suspended at the end of a 75.0 cm thin rod. What is the velocity of the pendulum as it passes through the origin
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