Acopper block with a mass of 300 grams is cooled to 77k by being immersed in liquid nitrogen. the block is then placed in a styrofoam cup containing some water that is initially at +50.0°c. assume no heat is transferred to the cup or the surroundings. the specific heat of liquid water is 4186 j/(kg °c), of solid water is 2060 j/(kg °c), and of copper is 385 j/(kg °c). the latent heat of fusion of water is 3.35 x 105 j/kg. when the system comes to equilibrium, the temperature is 0°c.(a) calculate the maximum possible mass of water that could be in the cup. (g)(b) calculate the minimum possible mass of water that could be in the cup. (g)

I'm kinda lost ! 1. when marilyn takes her pet dog for a walk, the dog walks at a veryconsistent pace of 0.55 m/s. draw a position-time graph to representmarilyn's dog walking the 19.8 m distance from the front of her house tothe nearest fire hydrant.2. both car a and car bleave school when a stopwatch reads zero. car atravels at a constant 75 km/h, and car b travels at a constant 85 km/h.a) draw a position-time graph showing the motion of both cars. howfar are the two cars from school when the stopwatch reads 2 hrs? calculate the distances and show them on your graph.b) both cars passed a gas station 120 km from the school. when dideach car pass the gas station? calculate the times and show themon your graph.3. the figure below shows the position-time graph showing a shopper'smovement up and down the aisle at a store.a) write a story describing the shopper's movements at the store.b) when does the shopper have a position of 6 m? c) how much time passes between when the shopper enters the aisleand when he gets to a position of 12 m? what is the shopper's averagevelocity between 37 s and 46 s?

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?