Physics, 28.02.2021 20:40 Seventhhokage465
A student designs an investigation to study the effect of gravity on objects on Earth. He will use the criteria shown. How can the student improve the investigation?
(1 point)
by dropping the balls from the same height
by finding balls made from different materials
by using balls that are the same mass
by measuring the circumference of the balls
Answers: 2
Physics, 22.06.2019 05:20
Given the position vector of the particle r(t)=(t+1)i+(t^2ā1)j+2t k, find the particle's velocity and acceleration vectors at t=1
Answers: 1
Physics, 22.06.2019 07:30
Some material consisting of a collection of microscopic objects is kept at a high temperature. a photon detector capable of detecting photon energies from infrared through ultraviolet observes photons emitted with energies of 0.3 ev, 0.5 ev, 0.8 ev, 2.0ev, 2.5ev, and 2.8ev. these are the only photon energies observed. (a) draw and label a possible energy-level diagram for one of the microscopic objects, which has four bound states. on the diagram, indicate the transitions corresponding to the emitted photons. explain briefly. (b) would a springāmass model be a good model for these microscopic objects? why or why not? (c) the material is now cooled down to a very low temperature, and the photon detector stops detecting photon emissions. next, a beam of light with a continuous range of energies from infrared through ultraviolet shines on the material, and the photon detector observes the beam of light after it passes through the material. what photon energies in this beam of light are observed to be significantly reduced in intensity (ādark absorption linesā)? explain briefly.
Answers: 3
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, 23.06.2019 01:30
)consider two positively charged particles, one of charge q0 (particle 0) fixed at the origin, and another of charge q1 (particle 1) fixed on the y-axis at (0,d1,0). what is the net force fā on particle 0 due to particle 1?
Answers: 2
A student designs an investigation to study the effect of gravity on objects on Earth. He will use t...
Mathematics, 31.08.2019 03:50
Social Studies, 31.08.2019 03:50
Biology, 31.08.2019 03:50
Mathematics, 31.08.2019 03:50
English, 31.08.2019 03:50
Social Studies, 31.08.2019 03:50
Biology, 31.08.2019 03:50