vector A has a magnitude of 8 units and makes an angle at 45 degrees with the positive x-axis vector B also has the same magnitude of 8 units and directed along the negative x-axis find the magnitude and direction of magnitude+magnitudeB​

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280°f and a minimum temperature of 240°. once the temperature hits 280°, it takes 20 minutes before it is 280° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270°. he puts the cake into the oven when it is at 260° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving