Physics, 08.04.2020 01:30 oksanabkrot
A toy rocket, weighing mg=10 N, blasts straight up from a stadium of height (h) above the ground with a kinetic energy of 40 J. At the exact top of its trajectory, the rocket has a total mechanical energy of 280 J. Find the height h of the stadium (ignore air resistance ).
Answers: 2
Physics, 21.06.2019 19:10, shazanah95
Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.
Answers: 1
Physics, 22.06.2019 05:00, anondriap
Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.
Answers: 1
Physics, 22.06.2019 18:30, hannahkharel2
Acar starts from rest at a stop sign and reaches a velocity of 25 m/s w in 4 seconds. determine the acceleration of the car. question 3 options: a) 6,25 m/s2 b)6.25 m/s c)100 m/s2 d)100 m/s
Answers: 1
Physics, 22.06.2019 21:50, Poohlobster
Aforce of 8,480 n is applied to a cart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?
Answers: 1
A toy rocket, weighing mg=10 N, blasts straight up from a stadium of height (h) above the ground wit...
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