The temperature of a sample of iron with a mass of 10.0 kg changed from 50.4°C to 25.0°C. The specific heat of iron is 0.444 J/kg*C. What is the amount of energy required to change the temperature like this?

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm

What properties of a moving object are used in determining the object's energy of motion

Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.