You find yourself in the middle of a frozen lake with a surface so slippery (ms = mk = 0) you cannot walk. however, you happen to have several rocks in your pocket. the ice is extremely hard. it cannot be chipped, and the rocks slip on it just as much as your feet do. can you think of a way to get to shore? use pictures, forces, and newton’s laws to explain your reasoning.

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

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.)