Physics, 07.05.2021 21:10 izzynikkie
An elaborate pulley consists of four identical balls at the ends of spokes extending out from a rotating drum. A box is connected to a light, thin rope wound around the rim of the drum. When it is released from rest, the box acquires a speed V after having fallen a distance d. Now the four balls are moved inward closer to the drum, and the box is again released from rest. After it has fallen a distance d, will its speed be equal to V, greater than V, or less than V? Show or explain why.
Answers: 3
Physics, 21.06.2019 20:00
Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.
Answers: 1
Physics, 22.06.2019 04:30
The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.
Answers: 1
Physics, 22.06.2019 08:30
Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.
Answers: 3
An elaborate pulley consists of four identical balls at the ends of spokes extending out from a rota...
Mathematics, 17.07.2019 00:00
Biology, 17.07.2019 00:00
Health, 17.07.2019 00:00
Biology, 17.07.2019 00:00
Mathematics, 17.07.2019 00:00
Biology, 17.07.2019 00:00
Chemistry, 17.07.2019 00:00
Mathematics, 17.07.2019 00:00
Biology, 17.07.2019 00:00
Biology, 17.07.2019 00:00
Mathematics, 17.07.2019 00:00