A gas that exerts a pressure of 14 bar in a container with a volume of 312 mL will exert a pressure of 6.7 bar when transferred to a container with a volume of 652 mL.

Explanation:

6 0

3 years ago

An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the pos

user100 [1]

Answer:

v = 0.5 m/s.

Explanation:

Total distance, d = 20 m + 20 m = 40 m

Total time taken, t = 30 s + 50 s = 80 s

The average speed of an object is the total distance divided by time taken. So,

$v=\dfrac{40}{80}\\\\=0.5\ m/s$

So, the average speed of the object is 0.5 m/s.

7 0

2 years ago

The police department is excited to have some new motorcycle units. One officer said that these motorcycles can go from 0 miles

nikklg [1K]

The officer is describing the motorcycle's acceleration. Of course when the bike goes from 0 to 80 in 6 seconds the police officer himself is left lying flat on his back in the parking lot.

7 0

3 years ago

A student on an amusement park ride moves in circular path with a radius of 3.5 m once every 4.5 s. What is the tangential veloc

nata0808 [166]

Answer:

the tangential velocity of the student is 4.89 m/s.

Explanation:

Given;

the radius of the circular path, r = 3.5 m

duration of the motion, t = 4.5 s

let the student's tangential velocity = v

The tangential velocity of the student is calculated as follows;

$v = \frac{2\pi r}{t} \\\\v = \frac{2 \pi \times 3.5}{4.5} \\\\v = 4.89 \ m/s$

Therefore, the tangential velocity of the student is 4.89 m/s.

6 0

2 years ago