Physics, 06.10.2019 06:30 areebaali1205
You and your dog are walking along a pond. your dog looks into the still water and is startled to see its reflection. which phenomenon is responsible for the appearance of the dog’s reflection on the water's surface? a. diffraction of water waves b. reflection of lightwaves c. refraction of lightwaves d. reflection of water waves e. refraction of water waves
Answers: 2
Physics, 21.06.2019 23:30
After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?
Answers: 1
Physics, 22.06.2019 17:50
Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?
Answers: 1
Physics, 22.06.2019 18:00
Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative
Answers: 3
You and your dog are walking along a pond. your dog looks into the still water and is startled to se...
Biology, 22.02.2021 18:30
Social Studies, 22.02.2021 18:30
English, 22.02.2021 18:30
Social Studies, 22.02.2021 18:30
Health, 22.02.2021 18:30
English, 22.02.2021 18:30
Mathematics, 22.02.2021 18:30
English, 22.02.2021 18:30
Mathematics, 22.02.2021 18:30
Geography, 22.02.2021 18:30
Mathematics, 22.02.2021 18:30
English, 22.02.2021 18:30
Mathematics, 22.02.2021 18:30