If the speed of x meters per second is equivalent to the speed of y kilometers per hour, what is y in terms of x ? (1 kilometer = 1,000 meters)

Explanation:

1 km = 1000 m

1 h = 60 minutes × 60 seconds

⇒1 h = 3600 seconds

First we need to convet kilometers to meter. We do this by multiplying y with 1000. Then we convert the hour into second, this is done by dividing y by 3600.

So,

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.