A Car makes a 75 mile trip South in 1 hour. For the first 30 minutes, it drove 50 mph. For the second 30 minutes, it drove 100 mph. Answer the following questions: (3 points)
a. Instantaneous Velocity at minute 15:
b. Instantaneous Velocity at minute 45:
55 mph
c. Average velocity of the entire trip in mph:
Arsh

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

How many moles are in 43.9 l of oxygen

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet