Physics, 28.09.2019 07:30 barstr9146
Jasper and gemma are going to play on a teeter totter. gemma gets on first. when jasper gets on, gemma moves into the air, but she does not move to the top. which statement could correctly explain the forces acting on the teeter totter? the forces are balanced because jasper weighs the same as gemma. the forces are unbalanced because jasper weighs the same as gemma. the forces are balanced because jasper weighs more than gemma. the forces are unbalanced because jasper weighs more than gemma.
Answers: 2
Physics, 22.06.2019 00:30
Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.
Answers: 2
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
Physics, 22.06.2019 18:20
An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped
Answers: 2
Jasper and gemma are going to play on a teeter totter. gemma gets on first. when jasper gets on, gem...
History, 08.06.2021 16:50
Social Studies, 08.06.2021 16:50
Mathematics, 08.06.2021 16:50
Mathematics, 08.06.2021 16:50
History, 08.06.2021 16:50
Mathematics, 08.06.2021 16:50
Mathematics, 08.06.2021 16:50
Mathematics, 08.06.2021 16:50
Mathematics, 08.06.2021 16:50