If a car is moving on a highway at 70 km/hr, going south and then turns to travel 70 km/hr east. what happens to the cars speed and velocity?

(a)speed - changing, velocity - constant

(b)speed - constant, velocity - changing

(c)speed - constant, velocity - constant

(d)speed - changing, velocity - changing

Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.

Describe the function of the endomembrane system? what organelles are involved?

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !