Acar is going along a circular road at a constant speed. the radius of the curve is 242 m, and the car takes 1.3 minutes to complete one round. calculate its centripetal acceleration in m/s^2

Explanation:

In order to find its centripetal acceleration we need to use the next equation:

So, we need to find its velocity in first place. Considering that the time T required for one complete revolution is called the period. For  constant speed is given by:

Solving for v, considering that in this case T=1.3min=78s, and r=242

Finally, replacing v in the centripetal acceleration equation:

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2