Which statement is true of a concave lens?
a) it produces only virtual images.
b)it pro...
Physics, 31.01.2020 10:50 dragongacha777
Which statement is true of a concave lens?
a) it produces only virtual images.
b)it produces only enlarged images.
c)it produces a real image only when the object is between the focal point and the lens.
d)it produces a virtual image only when object is between the focal point and the lens.
Answers: 3
Physics, 21.06.2019 18:00
Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions
Answers: 1
Physics, 22.06.2019 19:40
Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.
Answers: 3
Physics, 23.06.2019 04:10
Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.
Answers: 2
Mathematics, 15.04.2020 01:53
Mathematics, 15.04.2020 01:53
Mathematics, 15.04.2020 01:53
Mathematics, 15.04.2020 01:53
Social Studies, 15.04.2020 01:53