Physics, 04.08.2019 06:00 lamashermosa23
Suppose a scientific team is trying to recreate the energy-producing reactions that occur in the sun. what would they need for the experiments? a: hydrogen atoms, heat, and pressure b: hydrogen atoms, helium atoms, heat, pressure, and energy c: helium atoms and energy d: helium atoms and hydrogen atoms
Answers: 1
Physics, 21.06.2019 19:10
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 02:00
The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e
Answers: 1
Physics, 22.06.2019 10:40
As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.
Answers: 1
Physics, 22.06.2019 16:40
The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?
Answers: 1
Suppose a scientific team is trying to recreate the energy-producing reactions that occur in the sun...
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