7. An object that has a mass of 75 g is heated from 50°C to 93°C. If it takes 3000 J for the temperature change to occur, then what is the specific heat of the
object?

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?

Select the correct answer. what does the process of natural selection involve?