What would the temperature of 50g of 20 degree Celsius water mixed with 80g of 40 degree Celsius water?

When light is reflected by a mirror, the angle of an incidence is always? A) greater than the angle of reflection B) 90° with respect to the reflecting surface C) equal to the angle of reflection D) less than the angle of reflection

You are driving in the left lane on a multi-lane expressway, and are moving a bit faster than other traffic. a speeding car comes up behind you. you should a: stay in the left lane, and continue at the same speed you were at before.

Isra is analyzing the properties of several samples of elements to find out which sample is a metalloid.

When waves travel through water, why do the moving water particles continue to return to their starting position? OA. Waves transfer matter, but not energy. Waves transfer both matter and energy. OC. Waves transfer energy, but not matter. OD.

The thylacine is an extinct marsupial that once roamed Tasmania and Australia. There are several preserved specimens in existence.

An airplane started at a distance of 20 km from Chicago and flew directly away from it. 10 minutes later, the airplane was 55 km from Chicago. If dis the distance of the airplane from Chicago, what is Ad? A. 10 km B. 55 km C. 35 km D. 20 km

An alpha particle travels at a velocity of magnitude 550 m/s through a uniform magnetic field of magnitude 0.045T. (An alpha particle has a charge of charge of + 3.2 x 10-19 C and a mass 6.

A woman tries to put lipstick in the car. She has to come to a fast stop, and the lipstick falls to the floor and rolls forward, under the brake pedal. She dies. Why does this happen?

The slope of the line on any speed vs time graph is equal to the objects?

True or False? a globular cluster is a group of older stars that are clustered together.