Answers: 2
Physics, 21.06.2019 19:30
Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.
Answers: 3
Physics, 22.06.2019 13:30
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
Physics, 22.06.2019 19:30
Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)
Answers: 3
Physics, 22.06.2019 21:20
The strong nuclear force acts over a small distance than the electrostatic force. true or false
Answers: 2
A projectile is fired with an initial velocity of 120 meters per second at an unknown angle above th...
History, 23.03.2020 18:26
Social Studies, 23.03.2020 18:26
English, 23.03.2020 18:26
Mathematics, 23.03.2020 18:26
Mathematics, 23.03.2020 18:27
Computers and Technology, 23.03.2020 18:27
Mathematics, 23.03.2020 18:27
Biology, 23.03.2020 18:27