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A train has a mass of 4.65E+6 kg and is moving at 51.4 km/hr. The engineer applies the brakes, which results in a net backward force of 1.54E+6 N on the train. The brakes are held on for 28.9 s. What is the new speed of the train?
How far does it travel during this period?
a distant galaxy emits light that has a wavelength of 550.5 nm. on earth the wavelength of this light is measured to be
A monochromatic beam of light of wavelength 600 nm is incident normally on a diffraction grating with a slit spacing of 1.70 × 10-4 cm
Consider water vapor, H2O, at 26 °C. What percentage of water vapor molecules have a speed within 1 m/s of the most probable speed
given a barrel of diameter 134.122 cm at 20 c it is your job to attach an iron band around this barrel. the circular
Four identical metallic spheres with charges of +2.2 µC, +6.2 µC, ?6.6 µC, and ?3.6 µC are placed on a piece of paper. What is the resulting charge on each sphere
One of the first signs of sunburn is the reddening of the skin (called erythema). How many photons are incident on the skin in this amount of exposure
The speed of the ball at the top of the circle is 12.9 m/s. The acceleration of gravity is 9.8 m/s2 . If the ball is released at the bottom of the circle, what is its speed upon release
Two cars start from rest at a red stop light, When the light turns green, both cars accelerate forward, finally catching the blue car just as the blue car comes to a stop, How fast is the blue car going 9 seconds after it starts
Recall from thermodynamics that if an object of mass m absorbs an amount of energy Q, its temperature will increase according to Q=mc(Tfinal-Tinitial), where c is th specific heat of the material.
A hockey puck with mass 0.160kg is at rest on the horizontal, frictionless surface of a rink. What is the position of the puck at the end of that time
A long solenoid that has960turnsuniformly distributed over a length of0.390m produces a magnetic field of magnitude1.0010-4T at its center
At what minimum speed must a roller coaster be traveling when upside down at the top of a circle (Fig. 5-34) if the passengers are not to fall out? Assume a radius of curvature of 9.4 m.
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